Automatic ash removal assembly for regenerative chamber of kiln

Abstract

The utility model relates to the field of kiln regenerative chamber ash removal, in particular to an automatic ash removal assembly for a kiln regenerative chamber, which comprises an air inlet pipe, a first valve communicated with the lower end of the air inlet pipe, a heat storage box communicated with the lower end of the first valve, a rotating shaft arranged on the inner side of the heat storage box, a stirring rod arranged on the outer side of the rotating shaft, and a separation net arranged at the lower end of the rotating shaft. The lower end of the valve II is communicated with an exhaust pipe; the right end of the exhaust pipe is communicated with a dust collection bin; a filter box is arranged on the inner side of the dust collection bin; a filter screen is arranged on the inner side of the filter box; a rotating plate is arranged on the front side of the sealing cover; according to the dust collector, high-pressure gas is input into the heat storage box body, the stirring rod turns over and stirs the small heat storage balls, dust enters the filter box along with airflow, and the dust is collected in a centralized mode through filtration and adsorption of the filter screen and the filter cotton.

Description

Technical Field

[0001] This utility model relates to the field of ash removal in kiln regenerators, and in particular to an automatic ash removal component for kiln regenerators. Background Technology

[0002] A kiln is a device made of refractory materials used to fire products. In order to collect the heat contained in the exhaust gas, the kiln is usually connected to two heat storage chambers. The heat storage chambers are filled with heat storage balls to store the heat of the exhaust gas. The exhaust gas contains a large amount of combustion particulate matter. When the exhaust gas passes through the heat storage chamber, a large amount of combustion particulate matter will inevitably adhere to the heat storage balls. As time goes by, the particulate matter accumulated on the heat storage balls will become thicker and thicker, which will continuously reduce the heat absorption efficiency of the heat storage balls and reduce the heat utilization rate of the heat storage chamber.

[0003] For example, patent number CN221259549U discloses an automatic ash removal component for a kiln regenerator chamber, including a regenerator box with multiple heat storage balls for heat absorption inside; an ash discharge port at the bottom of the regenerator box; a shell fixedly installed on one side of the regenerator box; a motor fixedly installed on the inner wall of one side of the shell; a first gear fixedly sleeved on the output shaft of the motor; a sieving mechanism installed on the regenerator box for sieving dust; and a stirring mechanism assembled on the regenerator box for stirring the heat storage balls. This automatic ash removal component for the kiln regenerator chamber in this patent causes dust to fall naturally into the collection structure for collection by stirring and sieving the heat storage balls. This results in time-consuming and labor-intensive ash removal with low efficiency. Furthermore, the collected dust needs to be cleaned promptly, otherwise it may return to the regenerator chamber and cause secondary pollution of the heat storage balls.

[0004] Therefore, in view of the low ash removal efficiency of the above-mentioned automatic ash removal components for kiln regenerators, and the need for timely cleaning of the collected dust, otherwise it may return to the regenerator and cause secondary pollution of the regenerator balls, an automatic ash removal component for kiln regenerators can be designed. By introducing high-pressure gas into the regenerator, the airflow carries the dust to the filter structure, thereby achieving efficient ash removal and centralized collection of dust in the regenerator. Utility Model Content

[0005] In order to overcome the problem that the automatic ash removal component of the kiln regenerator has low ash removal efficiency and that the collected dust needs to be cleaned up in time, otherwise it may return to the regenerator and cause secondary pollution of the regenerator balls.

[0006] The technical solution of this utility model is as follows: an automatic ash removal component for a kiln regenerator chamber, comprising an air inlet pipe, a valve one connected to the lower end of the air inlet pipe, a regenerator chamber connected to the lower end of the valve one, a rotating shaft arranged inside the regenerator chamber, a stirring rod arranged outside the rotating shaft, a mesh screen arranged at the lower end of the rotating shaft, an ash removal chamber arranged at the lower end of the regenerator chamber, a valve two connected to the lower end of the ash removal chamber, an exhaust pipe connected to the lower end of the valve two, a dust collection chamber connected to the right end of the exhaust pipe, a filter box arranged inside the dust collection chamber, a filter screen arranged inside the filter box, filter cotton arranged to the right side of the filter screen, a sealing cover arranged at the front of the dust collection chamber, a rotating plate arranged at the front of the sealing cover, a pressure plate arranged at the rear of the rotating plate, and a screw rod arranged at the front end of the pressure plate.

[0007] Preferably, high-pressure gas is introduced into the heat storage box through the air inlet pipe, while the stirring rod is controlled to agitate the heat storage balls. This allows dust inside the heat storage box and on the surface of the balls to pass through the mesh and enter the dust removal chamber, achieving automatic dust removal of the heat storage box. The dust is carried by the airflow from the exhaust pipe into the filter box inside the dust collection chamber. Through the filtration and adsorption of the filter screen and filter cotton, the dust is collected in a concentrated manner. After dust removal is completed, valves one and two are closed, while the valves of the kiln interface and the fan interface are opened without affecting the use of the heat storage box. Subsequently, the pressure plate is moved away from the sealing cover by rotating the screw. At this time, the rotating plate is lifted, which pulls the sealing cover and removes the filter box from the dust collection chamber for convenient centralized cleaning of dust.

[0008] Preferably, the inner side of the heat storage box is provided with heat storage balls, the upper end of the heat storage box is provided with a kiln interface, and the left side of the heat storage box is provided with a fan interface. Both the kiln interface and the fan interface are connected to the heat storage box through valves.

[0009] Preferably, a drive motor is fixedly installed on the right side of the heat storage box, and the output end of the drive motor extends to the inside of the heat storage box and is fixedly connected to the right end of the rotating shaft, while the left end of the rotating shaft is rotatably connected to the inside of the heat storage box.

[0010] Preferably, the mesh is fixedly connected to the inner side of the lower end of the heat storage box, and the ash removal hopper is fixedly connected to the lower end of the heat storage box. The inner side of the ash removal hopper has a bucket-shaped structure design.

[0011] Preferably, the filter box and the dust collection chamber are slidably connected on the inside, the dust collection chamber is provided with an exhaust pipe interface on the right side, the filter box is provided with an air inlet on the left side, and the filter box is provided with an exhaust outlet on the right side.

[0012] Preferably, the filter screen and the inner side of the filter box are fixedly connected, the filter cotton and the inner side of the filter box are adapted to each other, the sealing cover and the front side of the dust collection chamber are sealed and connected, and the front side of the filter box and the sealing cover are fixedly connected.

[0013] Preferably, the left and right ends of the rotating plate are rotatably connected to the outer side of the dust collection bin, the rear side of the pressure plate and the sealing cover are tightly fitted by elastic gaskets, the rear end of the lead screw is rotatably connected to the pressure plate, the front end of the lead screw extends to the front side of the rotating plate and a knob is fixedly installed, and the lead screw and the rotating plate are threaded together.

[0014] The beneficial effects of this utility model are:

[0015] This automatic ash removal component for the kiln regenerator chamber introduces high-pressure gas into the regenerator box through the air inlet pipe. Simultaneously, a stirring rod agitates the regenerator balls, causing dust inside the regenerator box and on the surface of the balls to pass through the mesh and enter the ash removal chamber, thus achieving automatic ash removal from the regenerator box. The dust is then carried by the airflow through the exhaust pipe into the filter box inside the dust collection chamber, where it is filtered and adsorbed by the filter screen and filter cotton, achieving centralized collection of dust. After ash removal is completed, valves one and two are closed, while the valves at the kiln interface and the fan interface are opened without affecting the use of the regenerator box. Subsequently, rotating the knob drives the screw to rotate, moving the pressure plate away from the sealing cover. At this point, lifting the rotating plate pulls the sealing cover, causing the filter box to be removed from the dust collection chamber for convenient centralized dust cleaning. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural representation of the automatic ash removal component for the kiln regenerator of this utility model. Figure 1 ;

[0017] Figure 2 The diagram shown is a three-dimensional structural representation of the automatic ash removal component for the kiln regenerator of this utility model. Figure 2 ;

[0018] Figure 3 The diagram shown is a three-dimensional cross-sectional view of the heat storage box and ash removal bin of this utility model.

[0019] Figure 4 The diagram shown is a three-dimensional structural schematic of the dust collection bin and filter box of this utility model.

[0020] Figure 5 The diagram shown is a three-dimensional cross-sectional view of the dust collection bin and filter box of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Air inlet pipe; 2. Valve 1; 3. Heat storage box; 31. Kiln interface; 32. Fan interface; 4. Rotating shaft; 41. Drive motor; 5. Stirring rod; 6. Partition screen; 7. Ash removal bin; 8. Valve 2; 9. Exhaust pipe; 10. Dust collection bin; 11. Filter box; 12. Filter screen; 13. Filter cotton; 14. Sealing cover; 15. Rotating plate; 16. Pressure plate; 17. Screw; 171. Knob. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] A kiln is a furnace used to fire ceramic objects and sculptures or to fuse enamel onto the surface of metal objects. It is generally made of bricks and stones and can be made in various sizes as needed. It can be operated by combustible gas, oil or electricity.

[0024] A kiln typically consists of four parts: the kiln chamber, combustion equipment, ventilation equipment, and conveying equipment. Electric kilns mostly use heating wires, silicon carbide rods, or molybdenum disilicide as heating elements. Their structure is relatively simple and easy to operate. In addition, there are various atmosphere kilns and electric porcelain kilns. The rationality of the kiln structure and the correctness of its selection directly affect product quality, output, and energy consumption, making it a key piece of equipment in ceramic production.

[0025] A kiln regenerator is a waste heat recovery device that exchanges heat through the storage and release of heat by a medium. It is mainly used to improve the combustion efficiency and energy utilization rate of industrial kilns. The regenerator is the main place for heat exchange in a hot blast stove. By preheating air or gas, its temperature is increased to over 1000℃, thereby improving combustion efficiency.

[0026] Heat exchange is achieved through the storage and release of heat by a medium (usually air or gas) within a heat storage medium (such as ceramic spheres or a honeycomb structure). When the medium flows through the heat storage medium, heat is absorbed and stored; when the medium flows in the opposite direction, the previously stored heat is released, preheating the new medium. This cyclical process of heat storage and release greatly improves heat exchange efficiency.

[0027] To collect the heat contained in the exhaust gas, the kiln is usually connected to two heat storage chambers. The heat storage chambers are filled with heat storage balls to store the heat from the exhaust gas. The exhaust gas contains a large amount of combustion particulate matter. When the exhaust gas passes through the heat storage chamber, a large amount of combustion particulate matter will inevitably adhere to the heat storage balls. As time goes on, the accumulated particulate matter on the heat storage balls will become thicker and thicker, which will continuously reduce the heat absorption efficiency of the heat storage balls and reduce the heat utilization rate of the heat storage chamber.

[0028] Cleaning the heat storage chamber is one of the important measures to ensure the efficient and stable operation of the heat storage chamber. The accumulated ash will not only reduce the heat transfer efficiency of the heat storage chamber, but also lead to problems such as increased flue gas temperature, increased flue gas resistance, and increased induced draft fan current. In severe cases, it may even lead to heat storage chamber shutdown or deflagration accidents. Therefore, it is necessary to clean the heat storage chamber regularly.

[0029] There are many methods for cleaning heat storage chambers, including mechanical cleaning, airflow cleaning, manual cleaning, and chemical cleaning. Different cleaning methods are suitable for different types of ash accumulation and slag buildup; therefore, choosing the appropriate cleaning method is crucial for ensuring both cleaning effectiveness and equipment safety.

[0030] Mechanical cleaning is a method that uses mechanical force to remove accumulated ash and slag. Common mechanical cleaning methods include chain grate vibration cleaning and rotary air preheater cleaning. The advantages of mechanical cleaning are good cleaning effect and fast speed, making it suitable for removing heavily accumulated ash and slag. However, mechanical cleaning can easily damage the heating surface and is not effective for some thin layers of ash and slag.

[0031] Airflow cleaning is a method that uses high-speed flow of gas or steam to remove accumulated ash and slag. Common airflow cleaning methods include high-pressure steam blowing and air cannon blowing. The advantage of airflow cleaning is that it has a good removal effect on various types of ash and slag without damaging the heated surfaces. However, airflow cleaning requires a large amount of gas or steam and is not effective for some harder slag deposits.

[0032] Manual cleaning is a method of removing accumulated ash and slag manually. The advantages of manual cleaning are that it is effective at removing various types of ash and slag without damaging the heated surfaces. However, manual cleaning is labor-intensive, inefficient, and can easily damage the heated surfaces.

[0033] Chemical cleaning is a method that uses chemical agents to react with accumulated ash and slag, dissolving or softening them. Common chemical cleaning methods include acid washing and alkaline washing. The advantages of chemical cleaning are that it is effective at removing various types of ash and slag without damaging heated surfaces. However, chemical cleaning requires the use of chemical agents and can easily cause environmental pollution.

[0034] Currently, existing automatic ash removal components for kiln regenerators collect ash by stirring and sieving the regenerator balls, causing the ash to fall naturally into the collection structure. This process is time-consuming, labor-intensive, and inefficient. Furthermore, the collected ash needs to be cleaned up promptly, otherwise it may return to the regenerator chamber and cause secondary pollution to the regenerator balls.

[0035] Please see Figures 1-5This utility model provides an embodiment: an automatic ash removal component for a kiln regenerator, including an air inlet pipe 1, a valve 2 connected to the lower end of the air inlet pipe 1, a regenerator body 3 connected to the lower end of the valve 2, a rotating shaft 4 arranged inside the regenerator body 3, a stirring rod 5 arranged outside the rotating shaft 4, a mesh 6 arranged at the lower end of the rotating shaft 4, an ash removal chamber 7 arranged at the lower end of the regenerator body 3, and a valve 8 connected to the lower end of the ash removal chamber 7. The lower end of the second part 8 is connected to an exhaust pipe 9, and the right end of the exhaust pipe 9 is connected to a dust collection bin 10. A filter box 11 is installed inside the dust collection bin 10, a filter screen 12 is installed inside the filter box 11, and filter cotton 13 is installed to the right of the filter screen 12. A sealing cover 14 is installed at the front of the dust collection bin 10, a rotating plate 15 is installed at the front of the sealing cover 14, a pressure plate 16 is installed at the rear of the rotating plate 15, and a screw rod 17 is installed at the front end of the pressure plate 16.

[0036] Please see Figures 1-3 In this embodiment, heat storage balls are arranged inside the heat storage box 3, a kiln interface 31 is provided at the upper end of the heat storage box 3, and a fan interface 32 is provided on the left side of the heat storage box 3. Both the kiln interface 31 and the fan interface 32 are connected to the heat storage box 3 through valves. A drive motor 41 is fixedly installed on the right side of the heat storage box 3. The output end of the drive motor 41 extends to the inside of the heat storage box 3 and is fixedly connected to the right end of the rotating shaft 4. The left end of the rotating shaft 4 is rotatably connected to the inside of the heat storage box 3. The partition 6 and the heat storage box 3 are connected to each other. The lower end is fixedly connected to the inner side, and the lower end of the ash removal bin 7 and the heat storage box 3 are fixedly connected. The inner side of the ash removal bin 7 is designed with a bucket-shaped structure. The valves of the kiln interface 31 and the fan interface 32 are closed, and valve 1 2 and valve 2 8 are opened to input high-pressure gas into the heat storage box 3 from the air inlet pipe 1. At the same time, the rotating shaft 4 is controlled to rotate by the drive motor 41, so that the stirring rod 5 stirs the heat storage balls, so that the dust on the inner side of the heat storage box 3 and the surface of the balls enters the ash removal bin 7 through the partition 6, thereby realizing the automatic ash removal of the heat storage box 3.

[0037] Please see Figures 4-5 In this embodiment, the filter box 11 and the dust collection chamber 10 are slidably connected on the inside. The dust collection chamber 10 is provided with an exhaust pipe interface on the right side. The filter box 11 is provided with an air inlet on the left side and an air outlet on the right side. The filter screen 12 is fixedly connected to the inside of the filter box 11. The filter cotton 13 is adapted to the inside of the filter box 11. The sealing cover 14 is sealed to the front of the dust collection chamber 10. The front of the filter box 11 and the sealing cover 14 are fixedly connected. Dust enters the inside of the filter box 11 in the dust collection chamber 10 from the exhaust pipe 9 with the airflow. Through the filtration and adsorption of the filter screen 12 and the filter cotton 13, the dust is collected in a concentrated manner. After the dust removal is completed, the valves of valve 12 and valve 28 are closed, and the valves of the kiln interface 31 and the fan interface 32 are opened without affecting the use of the heat storage box 3.

[0038] Please see Figures 2-5 In this embodiment, the left and right ends of the rotating plate 15 are rotatably connected to the outer side of the dust collection chamber 10, the rear side of the pressure plate 16 and the sealing cover 14 are tightly fitted by elastic gaskets, the rear end of the lead screw 17 is rotatably connected to the pressure plate 16, and the front end of the lead screw 17 extends to the front side of the rotating plate 15 and is fixedly installed with a knob 171. The lead screw 17 and the rotating plate 15 are threaded together. By rotating the knob 171, the lead screw 17 is rotated, so that the pressure plate 16 moves away from the sealing cover 14. At this time, the rotating plate 15 is lifted, and the sealing cover 14 is pulled to remove the filter box 11 from the dust collection chamber 10, which facilitates the centralized cleaning of dust.

[0039] During operation, connect the exhaust pipe interface on the right side of the dust collection chamber 10 to the exhaust pipe, close the valves of the kiln interface 31 and the fan interface 32, and open valve 2 and valve 8 to input high-pressure gas into the heat storage box 3 through the air inlet pipe 1. At the same time, drive motor 41 controls the rotating shaft 4 to rotate, causing the stirring rod 5 to tumble the heat storage balls. This allows the dust inside the heat storage box 3 and on the surface of the balls to pass through the mesh 6 and enter the dust removal chamber 7, achieving automatic dust removal from the heat storage box 3. The dust then enters the dust collection chamber through the exhaust pipe 9 with the airflow. Inside the filter box 11 in the dust collection chamber 10, dust is collected by the filter screen 12 and filter cotton 13. After dust removal, valves 1-2 and 2-8 are closed, and the valves of the kiln interface 31 and the fan interface 32 are opened without affecting the use of the heat storage box 3. Subsequently, by turning the knob 171 to drive the screw 17 to rotate, the pressure plate 16 is moved away from the sealing cover 14. At this time, the rotating plate 15 is lifted, and the sealing cover 14 is pulled to remove the filter box 11 from the dust collection chamber 10, which facilitates the centralized cleaning of dust.

[0040] Through the above steps, high-pressure gas is introduced into the heat storage box 3 through the air inlet pipe 1, while the stirring rod 5 is controlled to stir the heat storage balls. This allows the dust inside the heat storage box 3 and on the surface of the balls to pass through the mesh 6 and enter the ash removal chamber 7. The dust is then carried by the airflow from the exhaust pipe 9 into the filter box 11 inside the dust collection chamber 10. Through the filtration and adsorption of the filter screen 12 and the filter cotton 13, the dust is collected in a concentrated manner. After the ash removal is completed, valves 2 and 8 are closed, and the valves of the kiln interface 31 and the fan interface 32 are opened. This does not affect the use of the heat storage box 3, thus solving the problem of low ash removal efficiency of the automatic ash removal component in the kiln heat storage chamber and the need for timely cleaning of the collected dust, otherwise it may return to the heat storage chamber and cause secondary pollution of the heat storage balls.

Claims

1. An automatic ash removal assembly for a kiln regenerator, comprising an air inlet pipe (1), characterized in that: The lower end of the air inlet pipe (1) is connected to valve one (2), the lower end of valve one (2) is connected to the heat storage box (3), the inner side of the heat storage box (3) is provided with a rotating shaft (4), the outer side of the rotating shaft (4) is provided with a stirring rod (5), the lower end of the rotating shaft (4) is provided with a mesh screen (6), the lower end of the heat storage box (3) is provided with an ash removal bin (7), the lower end of the ash removal bin (7) is connected to valve two (8), the lower end of valve two (8) is connected to an exhaust pipe (9), the exhaust pipe (9) The right end of the dust collection chamber (10) is connected to a dust collection bin (10). A filter box (11) is provided inside the dust collection bin (10). A filter screen (12) is provided inside the filter box (11). Filter cotton (13) is provided on the right side of the filter screen (12). A sealing cover (14) is provided on the front side of the dust collection bin (10). A rotating plate (15) is provided on the front side of the sealing cover (14). A pressure plate (16) is provided on the rear side of the rotating plate (15). A screw rod (17) is provided at the front end of the pressure plate (16).

2. The automatic ash removal component for a kiln regenerator according to claim 1, characterized in that: The heat storage box (3) is equipped with heat storage balls on the inner side, and the heat storage box (3) is equipped with a kiln interface (31) at the upper end. The heat storage box (3) is equipped with a fan interface (32) on the left side. The kiln interface (31) and the fan interface (32) are connected to the heat storage box (3) through valves.

3. The automatic ash removal component for a kiln regenerator according to claim 1, characterized in that: A drive motor (41) is fixedly installed on the right side of the heat storage box (3). The output end of the drive motor (41) extends to the inside of the heat storage box (3) and is fixedly connected to the right end of the rotating shaft (4). The left end of the rotating shaft (4) is rotatably connected to the inside of the heat storage box (3).

4. The automatic ash removal component for a kiln regenerator according to claim 1, characterized in that: The mesh (6) and the inner side of the lower end of the heat storage box (3) are fixedly connected, the ash removal hopper (7) and the lower end of the heat storage box (3) are fixedly connected, and the inner side of the ash removal hopper (7) is designed with a bucket-shaped structure.

5. The automatic ash removal component for a kiln regenerator according to claim 1, characterized in that: The filter box (11) and the dust collection chamber (10) are slidably connected on the inside. The dust collection chamber (10) is provided with an exhaust pipe interface on the right side. The filter box (11) is provided with an air inlet on the left side and an air outlet on the right side.

6. The automatic ash removal component for a kiln regenerator according to claim 1, characterized in that: The filter screen (12) and the filter box (11) are fixedly connected on the inside, the filter cotton (13) and the filter box (11) are adapted to each other on the inside, the sealing cover (14) and the front of the dust collection chamber (10) are sealed and connected, and the front of the filter box (11) and the sealing cover (14) are fixedly connected.

7. The automatic ash removal component for a kiln regenerator according to claim 1, characterized in that: The left and right ends of the rotating plate (15) are rotatably connected to the outer side of the dust collection bin (10). The rear side of the pressure plate (16) and the sealing cover (14) are tightly fitted by elastic gaskets. The rear end of the screw (17) is rotatably connected to the pressure plate (16). The front end of the screw (17) extends to the front side of the rotating plate (15) and a knob (171) is fixedly installed. The screw (17) and the rotating plate (15) are threadedly connected.

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