Cylinder type hot blast stove for chemical fertilizer production

Abstract

The utility model discloses a cylindrical hot-blast stove for chemical fertilizer production, and belongs to the technical field of ash discharge and blockage prevention of hot-blast stoves. An ash discharge pipe for discharging dust is arranged at the lower end of a second-stage filter cartridge; a rotating rod is mounted in a frame of the second-stage filter cartridge, a lantern ring is arranged on a rod body of the rotating rod, a cleaning cloth strip is arranged on the side wall of the lantern ring, and the rotating rod realizes rotation of the cleaning cloth strip through a power assembly, so that the cleaning cloth strip is in contact with the inner wall of the second-stage filter cartridge and the filter screen cloth, dust on the surfaces of the filter screen cloth and the second-stage filter cartridge is cleaned, and blockage is prevented. Through an ash discharging structure and an automatic cleaning mechanism (a rotating rod, a lantern ring and a cleaning cloth strip), dust of the hot blast stove is effectively collected and treated, the working environment is improved, long-term efficient operation of a filtering system is ensured, the production safety is improved, the maintenance cost is reduced, and the fault and downtime is shortened. In addition, the flexibility and adaptability of the system are enhanced due to the design selection of various power assemblies (such as a wind wheel and a servo motor).

Description

Technical Field

[0001] The utility model relates to the technical field of hot blast furnace ash discharge and blocking prevention, in particular to a cylindrical hot blast furnace for fertilizer production. Background Art

[0002] Hot blast furnace, as a kind of thermal power machinery, occupies an indispensable position in fertilizer production, especially in the process of drying and calcining raw materials. Its high efficiency and energy saving make it the first choice in the industry. However, in practical application, hot blast furnace also faces some challenges.

[0003] The filter cartridge is an important component of the filter, and its main function is to filter the dusty gas generated by the hot air furnace to ensure that the discharged gas meets environmental protection standards. However, the dust generated during the fertilizer production process is often highly sticky and corrosive, which makes it easy for the dust to form a thick dust layer on the surface of the filter cartridge.

[0004] When the dust accumulation reaches a certain level, the filter holes will be blocked and the air permeability of the filter cartridge will be greatly reduced, which directly leads to a decrease in the exhaust efficiency of the hot air furnace. In order to maintain normal working conditions, the hot air furnace has to consume more energy, which in turn leads to increased energy consumption and increased production costs.

[0005] In addition to the economic impact, dust blocking the filter cartridge may also pose a threat to the safe operation of the hot air furnace. The blocked filter cartridge will cause the internal pressure of the hot air furnace to increase, increasing the risk of equipment failure. At the same time, the filter cartridge that operates under high pressure for a long time is also more prone to damage, deformation and other problems, further shortening its service life. Utility Model Content

[0006] The main purpose of the utility model is to provide a cylindrical hot blast furnace for fertilizer production, which can effectively solve the problems raised in the background technology.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A cylindrical hot blast furnace for fertilizer production comprises a furnace body and a fan device, wherein the fan device is installed on one side of the furnace body;

[0009] A first-stage filter cartridge is installed on the pipeline of the fan device, a second-stage filter cartridge is provided at the lower end of the first-stage filter cartridge, a filter cloth is connected to the upper end opening of the second-stage filter cartridge, and a dust discharge pipe for discharging dust is provided at the lower end of the second-stage filter cartridge;

[0010] A rotating rod is installed in the frame of the second-stage filter cartridge, and the rod body of the rotating rod is provided with a ring, and the side wall of the ring is provided with a cleaning cloth strip. The rotating rod realizes the rotation of the cleaning cloth strip through a power component so that it contacts the inner wall and filter mesh cloth of the second-stage filter cartridge, cleans the dust on the surface of the filter mesh cloth and the second-stage filter cartridge and prevents clogging.

[0011] In the preferred embodiment of the utility model, the power assembly is a wind wheel, the middle section of the shaft of the rotating rod is provided with a wind wheel, the filter cloth is provided with a through hole facing the wind wheel, the wind from the fan device drives the wind wheel to rotate and drives the cleaning cloth strip to rotate;

[0012] In the preferred embodiment of the utility model, the power assembly is an additional servo motor, the rotating rod extends to the outer end of the second-stage filter cartridge and is sleeved with a docking seat, the outer end of the docking seat is bolted with the additional servo motor, the output end of the additional servo motor is embedded in the end of the rotating rod to provide an embedding hole, and the cleaning cloth strip is driven to rotate by the additional servo motor;

[0013] In the preferred embodiment of the utility model, the power assembly includes a wind wheel and an additional servo motor, the wind wheel is installed on a rotating rod, the outer end of the rotating rod is connected to the additional servo motor through a docking seat, the wind wheel and the cleaning cloth strip are rotated by the additional servo motor, and the wind wheel disturbs the air at the lower end of the filter cloth to expand the vibration amplitude of the filter cloth;

[0014] In the preferred embodiment of the utility model, the rotating rod is mounted on the second-stage filter cartridge via a bearing assembly, and the connection between the second-stage filter cartridge, the bearing assembly and the rotating rod is mechanically sealed;

[0015] According to a preferred embodiment of the utility model, the shaft of the rotating rod is provided with threads, the collar is connected to the rotating rod via threads, and the cleaning cloth strip is fixed to the collar via bolts.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] In the utility model, the dust generated by the hot blast furnace can be efficiently collected and properly processed through a carefully designed ash discharge structure. This measure significantly reduces dust pollution at the production site and creates a cleaner and more comfortable working environment for employees.

[0018] In order to ensure the continuous and efficient operation of the filtration system, an innovative automatic cleaning mechanism is introduced. This mechanism combines components such as a rotating rod, a collar and a cleaning cloth to remove dust from the filter cartridge and filter cloth regularly or in real time. In this way, not only the cleanliness of the hot air is ensured, but also potential safety hazards such as equipment overheating and pressure increase caused by clogging of the filtration system are prevented, thereby improving the safety of the entire production process.

[0019] The introduction of the automatic cleaning mechanism has also greatly reduced the frequency and difficulty of manual cleaning. Traditional cleaning methods require regular manual inspection and cleaning, which is time-consuming and labor-intensive. The automatic cleaning mechanism can complete this task automatically, significantly reducing maintenance costs. At the same time, due to the efficient operation of the filtration system, equipment failures and downtime caused by dust blockage are also reduced, further improving production efficiency.

[0020] In order to meet different production needs, a variety of power component design options are also provided. For example, customers can choose drive modes such as wind wheels or installed servo motors according to actual production needs. This flexibility enables the system to better adapt to various production environments and improves the adaptability and practicality of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a display diagram of the fan device and filter cartridge of the utility model;

[0023] Figure 3 This is a side view of the fan device and filter cartridge of the utility model;

[0024] Figure 4 It is a display diagram of the filter cartridge, rotating rod, collar and cleaning cloth strip, wind wheel and installed servo motor of the utility model;

[0025] Figure 5 for Figure 4 Enlarged schematic diagram at point A in the middle.

[0026] In the figure: 1. furnace body; 2. support frame; 3. auxiliary pipeline; 4. fan device; 5. first-stage filter cartridge; 6. second-stage filter cartridge; 7. filter cloth; 8. through hole; 9. rotating rod; 10. wind wheel; 11. collar; 12. cleaning cloth strip; 13. docking seat; 14. installed servo motor; 15. ash discharge pipe. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods. Example

[0028] like Figures 1 to 5As shown, a cylindrical hot air furnace dedicated to fertilizer production is introduced, and its core components include a furnace body 1 and a fan device 4. The fan device 4 is cleverly installed on one side of the furnace body 1 to ensure the smooth circulation of hot air. On the pipeline of the fan device 4, a first-stage filter cartridge 5 is specially arranged for preliminary filtering of impurities in the air. Below the first-stage filter cartridge 5, there is a second-stage filter cartridge 6 to provide a more refined filtering effect. It is worth mentioning that a filter cloth 7 is connected to the upper opening of the second-stage filter cartridge 6, which can effectively capture tiny dust particles.

[0029] In order to maintain the durability of the filtering effect, a rotating rod 9 is installed in the frame of the second-stage filter cartridge 6. A collar 11 is provided on the rod body of the rotating rod 9, and the side wall of the collar 11 is provided with a cleaning cloth strip 12. These cleaning cloth strips 12 are rotated by the power assembly of the rotating rod 9, so that they can contact the inner wall of the second-stage filter cartridge 6 and the filter cloth 7, effectively cleaning the dust on their surfaces to prevent clogging;

[0030] A secondary pipeline 3 is installed on the furnace body 1 , and a support frame 2 is provided at the lower end of the furnace body 1 , and the furnace body 1 is supported by the support frame 2 .

[0031] The rotating rod 9 is stably mounted on the second-stage filter cartridge 6 through a bearing assembly, and a mechanical seal is used at the connection between them to ensure the stability and safety of the system. The rotating rod 9 is also provided with threads, so that the collar 11 can be tightly connected to the rotating rod 9 through the threads. The cleaning cloth strip 12 is fixed to the collar 11 by bolts, which is convenient for replacement and maintenance.

[0032] In the selection of the power assembly, a wind wheel 10 is used as the main driving device. The wind wheel 10 is installed in the middle section of the rotating rod 9. When the wind of the fan device 4 blows, the wind wheel 10 will rotate accordingly, thereby driving the cleaning cloth strip 12 to rotate. Example

[0033] In the second embodiment, a similar structure to the first embodiment is still used, but the design of the power assembly is adjusted. In this embodiment, the power assembly is an additional servo motor 14. The rotating rod 9 extends to the outside of the second-stage filter cartridge 6 and is connected to the additional servo motor 14 through the docking seat 13. The output end of the additional servo motor 14 is embedded in the embedded hole opened at the end of the rotating rod 9, so that the rotating rod 9 and the cleaning cloth strip 12 can be directly driven to rotate. Example

[0034] In the third embodiment, the features of the first and second embodiments are combined, and a more complex power assembly design is adopted. Specifically, the power assembly includes both a wind wheel 10 and an additional servo motor 14. The wind wheel 10 is mounted on the rotating rod 9, and the outer end of the rotating rod 9 is connected to the additional servo motor 14 through the docking seat 13. In this way, the wind wheel 10 and the cleaning cloth strip 12 can be driven to rotate by the additional servo motor 14. In addition, the rotation of the wind wheel 10 can also disturb the air at the lower end of the filter cloth 7, further expanding the vibration amplitude of the filter cloth 7, thereby improving the cleaning effect.

[0035] Ash removal process: The cylindrical hot blast furnace (furnace body 1) is continuously operated during the fertilizer production process, and the high-temperature hot blast generated is circulated in the pipeline through the fan device 4. As time goes by, the dust particles carried in the hot blast will gradually accumulate inside the furnace body 1, on the first-stage filter cartridge 5 and the second-stage filter cartridge 6.

[0036] The first filter cartridge 5 and the second filter cartridge 6 respectively play the role of preliminary and fine filtering, intercepting most of the dust particles in the air. The filter cloth 7 at the upper end of the second filter cartridge 6 can effectively capture tiny dust particles.

[0037] When the accumulated dust reaches a certain level or according to the preset cleaning cycle, the automatic cleaning mechanism is activated. The wind generated by the fan device 4 drives the wind wheel 10 to rotate, and the rotation of the wind wheel 10 drives the rotating rod 9 and the cleaning cloth strip 12 on the collar 11 to rotate. During the rotation process, the cleaning cloth strip 12 contacts the inner wall of the second-stage filter cylinder 6 and the filter cloth 7 to remove the dust on their surface.

[0038] During the cleaning process, the removed dust particles may directly fall into the ash collecting hopper or ash discharge port below. If necessary, the ash discharge port can be opened to discharge the accumulated dust outside the furnace body 1.

[0039] Check the hot air furnace and its filter device regularly to ensure the filtering effect and the normal operation of the ash removal mechanism. The cleaning cloth strip 12 and other wearing parts can be replaced as needed.

[0040] To prevent dust clogging, larger impurities in the air are removed by preliminary filtration in the first filter cartridge 5. Then, in the second filter cartridge 6, finer filtration and the capture of the filter cloth 7 are used to further remove tiny dust particles.

[0041] In order to prevent the second-stage filter cartridge 6 and the filter cloth 7 from being blocked, an automatic cleaning mechanism consisting of a rotating rod 9, a collar 11 and a cleaning cloth strip 12 is specially designed. The rotating rod 9 drives the collar 11 and the cleaning cloth strip 12 to rotate through the drive of the wind wheel 10 or the additional servo motor 14, thereby cleaning the inner wall of the second-stage filter cartridge 6 and the surface of the filter cloth 7. This automatic cleaning mechanism can effectively prevent dust blockage and maintain the durability of the filtering effect.

[0042] In addition, in the third embodiment, the air at the lower end of the filter cloth 7 is disturbed by the rotation of the wind wheel 10, further increasing the vibration amplitude of the filter cloth 7, thereby improving the cleaning effect. This design further enhances the ability to prevent dust clogging.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cylindrical hot air furnace for fertilizer production, comprising a furnace body (1) and a fan device (4), wherein the fan device (4) is installed on one side of the furnace body (1), and is characterized in that: A first-stage filter cartridge (5) is installed on the pipeline of the fan device (4); a second-stage filter cartridge (6) is provided at the lower end of the first-stage filter cartridge (5); a filter cloth (7) is connected to the upper opening of the second-stage filter cartridge (6); and a dust discharge pipe (15) for discharging dust is provided at the lower end of the second-stage filter cartridge (6); A rotating rod (9) is installed in the frame of the second-stage filter cartridge (6), and a ring (11) is provided on the rod body of the rotating rod (9), and a cleaning cloth strip (12) is provided on the side wall of the ring (11). The rotating rod (9) realizes the rotation of the cleaning cloth strip (12) through a power assembly, so that the cleaning cloth strip (12) contacts the inner wall of the second-stage filter cartridge (6) and the filter mesh cloth (7), thereby cleaning dust on the surface of the filter mesh cloth (7) and the second-stage filter cartridge (6) and preventing clogging.

2. The cylindrical hot air furnace for fertilizer production according to claim 1, characterized in that: The power assembly is a wind wheel (10), the wind wheel (10) is provided in the middle section of the shaft of the rotating rod (9), a through hole (8) facing the wind wheel (10) is provided on the filter cloth (7), and wind from the fan device (4) drives the wind wheel (10) to rotate and drives the cleaning cloth strip (12) to rotate.

3. The cylindrical hot air furnace for fertilizer production according to claim 1, characterized in that: The power assembly is a mounted servo motor (14); the rotating rod (9) extends to the outer end of the second-stage filter cartridge (6) and is sleeved with a docking seat (13); the outer end of the docking seat (13) is bolted with the mounted servo motor (14); the output end of the mounted servo motor (14) is embedded in an embedding hole provided at the end of the rotating rod (9); and the cleaning cloth strip (12) is driven to rotate by the mounted servo motor (14).

4. The cylindrical hot blast furnace for fertilizer production according to claim 1, characterized in that: The power assembly comprises a wind wheel (10) and an attached servo motor (14); the wind wheel (10) is mounted on a rotating rod (9); the outer end of the rotating rod (9) is connected to the attached servo motor (14) via a docking seat (13); the wind wheel (10) and the cleaning cloth strip (12) are rotated by the attached servo motor (14); the wind wheel (10) disturbs the air at the lower end of the filter mesh cloth (7) to increase the vibration amplitude of the filter mesh cloth (7).

5. A cylindrical hot blast furnace for fertilizer production according to any one of claims 1 to 4, characterized in that: The rotating rod (9) is mounted on the second-stage filter cartridge (6) via a bearing assembly, and the connection between the second-stage filter cartridge (6), the bearing assembly and the rotating rod (9) is mechanically sealed.

6. A cylindrical hot blast furnace for fertilizer production according to claim 5, characterized in that: The shaft of the rotating rod (9) is provided with threads, the collar (11) is connected to the rotating rod (9) via threads, and the cleaning cloth strip (12) is fixed to the collar (11) via bolts.

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