Kiln head and kiln tail dust collecting device

Abstract

The utility model discloses a kiln head and tail dust collecting device, which relates to the technical field of dust collecting devices, and comprises an air inlet pipe, a box body, an exhaust pipe I and an exhaust pipe II, the air inlet pipe is fixedly connected to the center of one side wall of the box body, the two ends of one side wall, far away from the air inlet pipe, of the box body are fixedly connected with the exhaust pipe I and the exhaust pipe II respectively, and the box body is of a hollow structure; according to the utility model, the inclined filter screen and the vibrating block are arranged in the exhaust pipe, when the filter screen is full of dust, the conduction direction of waste gas can be changed, and the vibrating block is used for vibrating the filter screen, so that impurities on the filter screen can be effectively helped to fall out of the filter holes, the filtering capacity of the filter screen is recovered, and manual cleaning or replacement without shutdown is not needed; and meanwhile, after the filter screen in the exhaust pipe on one side is full, vibration can be triggered, and the conduction direction is switched, so that the filter screen is cleaned in a non-stop state, and the frequency and times of shutdown cleaning and replacement are reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of dust collection devices, specifically a dust collection device for kiln head and kiln tail. Background Technology

[0002] A rotary kiln is a cylindrical piece of equipment that can be placed horizontally or slightly tilted for heat treatment and chemical reactions of materials. Its basic structure usually consists of a kiln body, kiln head, kiln tail, transmission device, burner, cooling device, etc. The kiln body is cut from steel plates 10 to 45 mm thick and lined with refractory bricks or other refractory materials to ensure stable operation of the equipment at high temperatures.

[0003] During the production process of a rotary kiln, the dust and exhaust gas generated at the kiln head and tail need to be effectively collected and treated to prevent environmental pollution and protect production equipment. Traditional dust collection methods typically include a pre-filtration step, where large dust particles in the exhaust gas are initially filtered through a filter screen before being sent to a bag filter pulse dust collector for further dust collection. However, this pre-filtration device has a problem: over time, the filter pores on the screen are easily clogged by dust particles, leading to a gradual decrease in filtration efficiency. Once the filter screen becomes severely clogged, it is necessary to shut down the machine for cleaning or replacement, which not only affects production efficiency but also increases maintenance costs.

[0004] In view of the above, this application is hereby submitted. Utility Model Content

[0005] The purpose of this utility model is to provide a dust collection device for kiln head and kiln tail to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides a kiln head and kiln tail dust collection device, including an air inlet pipe, a box body, an exhaust pipe one, and an exhaust pipe two. The air inlet pipe is fixedly connected to the center of one side wall of the box body. The two ends of the side wall of the box body away from the air inlet pipe are respectively fixedly connected to the exhaust pipe one and the exhaust pipe two. The box body has a hollow structure. Both the exhaust pipe one and the exhaust pipe two are equipped with a filter mechanism with the same structure. The filter mechanism includes a filter screen that slides on the inner arc wall of the exhaust pipe two. The filter screen is inclined relative to the vertical plane in which the inner arc wall of the exhaust pipe two is located. Two opposite ends of the filter screen are fixedly connected to a slider one. The slider one slides on the inner arc wall of the exhaust pipe two. A fixed rod two slides on the inner arc wall of the exhaust pipe two on the side of the filter screen away from the box body. The fixed rod two is set against the inner arc wall of the exhaust pipe one, and a vibrating block is fixedly connected to its end. The vibrating block is set towards the filter screen.

[0007] Furthermore, a groove is provided on the inner arc wall of the exhaust pipe 2 at the position corresponding to the slider 1. The length direction of the groove is parallel to the axial direction of the exhaust pipe 2. The slider 1 slides in the groove. A return spring is fixedly connected to the side wall of the slider 1 away from the fixed rod 2. The end of the return spring 1 away from the slider 1 is fixed to the inner wall of the groove. A fixed rod is fixedly connected to the side wall of the slider 1 away from the return spring 1 on the side closer to the housing. The length direction of the fixed rod 1 is parallel to the axial direction of the exhaust pipe 2. A touch switch is provided on the inner wall of the groove 1 away from the corresponding slider 1 on the side away from the housing.

[0008] Furthermore, a second groove is provided on the inner arc wall of the exhaust pipe, corresponding to the position of the fixed rod away from the slider. The second groove is in the same length direction as the first groove and is located in the same horizontal plane. A channel is provided through the center of the side wall of the first and second grooves that are close to each other. The length direction of the channel is the same as the first groove. The end of the fixed rod away from the slider slides in the channel. A second channel is provided on the side of the first channel away from the exhaust pipe. The length direction of the second channel is perpendicular to the length direction of the first channel. A limit block slides in the second channel. The ends of the fixed rod and the limit block that are close to each other abut against each other. The side walls of the fixed rod and the limit block that are close to each other are both inclined surfaces.

[0009] Furthermore, a magnetic block slides in the groove two on the inner arc wall of the exhaust pipe two. A magnetic sheet is fixed on the side wall of the limiting block near the magnetic block. The magnetic sheet and the magnetic block have the same polarity. A reset spring two is fixedly connected to the side wall of the magnetic block away from the limiting block. The end of the reset spring two away from the magnetic block is fixedly connected to the side wall of the groove two. The side wall of the magnetic block near the inside of the exhaust pipe two is fixedly connected to the fixing rod two.

[0010] Furthermore, the box body has a hollow structure. A rotating shaft is rotatably connected to the middle of the inner wall of the bottom of the box body away from the air intake pipe. The axis of the rotating shaft is consistent with the height direction of the box body. A baffle is fixedly connected to the outer arc wall of the rotating shaft. Baffles are fixedly connected to both sides of the inner wall of the box body at the interface between the air intake pipe and the box body. The end of the baffle away from the rotating shaft abuts against the side wall of the two baffles that are close to each other.

[0011] Furthermore, the end of the rotating shaft away from the inner wall of the bottom of the housing is set through the housing, and a motor is fixedly connected to the end of the rotating shaft that passes through the housing. The motor is located on the outside of the housing, fixed to the housing, and electrically connected to the touch switch.

[0012] Furthermore, it also includes: an ash hopper with an air inlet pipe fixed to its side, a built-in stepped perforated baffle plate, a wire mesh and detection sensor installed above the bottom of the ash hopper, and a sealed maintenance door and audible and visual alarm at the top, providing comprehensive protection for the ash hopper's airflow guidance, maintenance, and safety monitoring; the top of the ash hopper has an installation hole and is equipped with a vertical level gauge and pressure transmitter, as well as a screw, guide rod, and cleaning device. The level gauge is electrically connected to the microcontroller, an air cannon is mounted on the horn body, and brush bristles are installed inside the sleeve of the cleaning device to further improve the cleaning effect.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By installing an inclined filter screen and vibrating block inside the exhaust pipe, when the filter screen is full of dust, the direction of exhaust gas flow can be changed, and the vibrating block can be used to vibrate the filter screen, which can effectively help the impurities on the filter screen fall out of the filter holes and restore the filter screen's filtering capacity without stopping the machine for manual cleaning or replacement. At the same time, when the filter screen in one side of the exhaust pipe is full, it will trigger vibration and switch the direction of flow, thereby achieving cleaning of the filter screen without stopping the machine, reducing the frequency and number of times the machine is stopped for cleaning and replacement.

[0015] 2. Through precise calculation and experimental verification of the filter area, the optimal filter area was finally determined, which effectively improved the dust removal efficiency. The key parts such as the diameter and curvature of the internal pipes of the dust collector were finely modified, which significantly reduced the air intake resistance and ensured the smooth flow of exhaust gas. Attached Figure Description

[0016] Figure 1 A cross-sectional view of the internal structure of the exhaust pipe in a dust collection device for kiln head and kiln tail.

[0017] Figure 2 This is a cross-sectional view showing the connection relationship between the air inlet pipe and the connecting parts, exhaust pipe one and exhaust pipe two in a kiln head and kiln tail dust collection device.

[0018] Figure 3 This is a schematic diagram of the overall structure of a dust collection device for kiln head and kiln tail.

[0019] In the picture:

[0020] 10. Intake pipe; 11. Housing; 12. Exhaust pipe one; 13. Exhaust pipe two; 14. Motor; 15. Shaft; 16. Baffle one;

[0021] 20. Filter screen; 21. Slider 1; 22. Return spring 1; 23. Fixing rod 1; 24. Limiting block;

[0022] 30. Magnetic block; 31. Two return springs; 32. Two fixing rods; 33. Vibrating block. Detailed Implementation

[0023] 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.

[0024] Please see the appendix Figure 1 To be continued Figure 3 This utility model provides a kiln head and kiln tail dust collection device, comprising an air inlet pipe 10, a housing 11, an exhaust pipe 12, and an exhaust pipe 13. The air inlet pipe 10 is fixedly connected to the center of one side wall of the housing 11. The exhaust pipe 12 and the exhaust pipe 13 are respectively fixedly connected to the two ends of the side wall of the housing 11 away from the air inlet pipe 10. The housing 11 has a hollow structure. Both the exhaust pipe 12 and the exhaust pipe 13 are provided with a filter mechanism with the same structure. The filter mechanism includes a filter that slides inside the exhaust pipe 13. The filter screen 20 on the arc wall is inclined relative to the vertical plane of the inner arc wall of the exhaust pipe 2 13. Two opposite ends of the filter screen 20 are fixedly connected to the slider 1 21. The slider 1 21 slides on the inner arc wall of the exhaust pipe 2 13. A fixing rod 2 32 slides on the inner arc wall of the exhaust pipe 2 13 on the side of the filter screen 20 away from the box 11. The fixing rod 2 32 is set against the inner arc wall of the exhaust pipe 1 12 and its end is fixedly connected to the vibrating block 33. The vibrating block 33 is set towards the filter screen 20.

[0025] It should be noted that: exhaust gas from the rotary kiln is received through the air inlet pipe 10. After passing through the housing 11, the exhaust gas is discharged through exhaust pipe 12 and exhaust pipe 23. Both exhaust pipe 12 and exhaust pipe 23 are equipped with the same filter mechanism to filter the exhaust gas and remove large dust and impurities. When the exhaust gas passes through the filter screen 20, large dust and impurities are trapped on the filter screen 20, while the clean gas continues to flow through the filter screen 20. In order to maintain the filtering effect of the filter screen 20, the filter screen 20 is vibrated by the fixing rod 22 and the vibrating block 33 to remove dust and impurities on the filter screen 20.

[0026] The inclined filter screen 20 increases the contact area between the filter screen 20 and the gas, thereby improving the filtration effect. In the initial state, the vibrating block 33 does not contact the filter screen 20.

[0027] Please see the appendix Figure 1 To be continued Figure 3This utility model provides a technical solution: a groove is provided on the inner arc wall of the exhaust pipe 21 at the position corresponding to the slider 21. The length direction of the groove is parallel to the axial direction of the exhaust pipe 21. The slider 21 slides in the groove. A return spring 22 is fixedly connected to the side wall of the slider 21 away from the fixed rod 32. The end of the return spring 22 away from the slider 21 is fixed to the inner wall of the groove. A fixed rod 23 is fixedly connected to the side wall of the slider 21 away from the return spring 22 on the side closer to the housing 11. The length direction of the fixed rod 23 is parallel to the axial direction of the exhaust pipe 21. A touch switch is provided on the inner wall of the groove away from the corresponding slider 21 on the side away from the housing 11.

[0028] It should be noted that when the filter holes on the filter screen 20 are blocked, the area of ​​the filter screen 20 affected by the airflow increases, resulting in an increase in the force. This makes the filter screen 20 more easily moved by the airflow. The return spring 22 is initially in a free state. When the filter screen 20 is moved by the airflow, the return spring 22 is gradually stretched and stores energy. When most of the filter holes on the filter screen 20 are blocked, that is, when the filtration performance of the filter screen 20 is very low, the slider 21 away from the housing 11 will touch the pressure switch.

[0029] Please see the appendix Figure 1 To be continued Figure 3 This utility model provides a technical solution: a second groove is provided on the inner arc wall of the exhaust pipe 12 at a position corresponding to the side of the fixed rod 23 away from the slider 21. The second groove and the first groove have the same length direction and are located in the same horizontal plane. A channel 1 is provided through the center of the side wall of the first groove and the second groove that are close to each other. The length direction of the channel 1 is the same as that of the first groove. The end of the fixed rod 23 away from the slider 21 slides in the channel 1. A second channel is provided on the side of the first channel away from the exhaust pipe 13. The length direction of the second channel is perpendicular to the length direction of the first channel. A limit block 24 slides in the second channel. The ends of the fixed rod 23 and the limit block 24 that are close to each other abut against each other. The side walls of the fixed rod 23 and the limit block 24 that are close to each other are both inclined surfaces.

[0030] It should be noted that: Channel 1 is only interconnected with the interior of exhaust pipe 2 13 through sliding groove 1 and sliding groove 2 at both ends. Channel 2 is arranged radially along exhaust pipe 2 13. In the initial state, the limiting block 24 is located inside channel 2 and the end of the limiting block 24 abuts against the inner wall of channel 1. When the filter screen 20 is driven, the fixing rod 1 23 moves toward the limiting block 24. When the fixed rod 1 23 and the inclined surface of the limiting block 24 abut against each other, the limiting block 24 is pushed up and then slides inside channel 2.

[0031] Please see the appendix Figure 1 To be continued Figure 3This utility model provides a technical solution: a magnetic block 30 slides in a groove 2 on the inner arc wall of the exhaust pipe 2 13, a magnetic sheet is fixed on the side wall of the limiting block 24 near the magnetic block 30, the magnetic sheet and the magnetic block 30 have the same polarity, a return spring 2 31 is fixedly connected to the side wall of the magnetic block 30 away from the limiting block 24, the end of the return spring 2 31 away from the magnetic block 30 is fixedly connected to the side wall of the groove 2, and the side wall of the magnetic block 30 near the inside of the exhaust pipe 2 13 is fixedly connected to the fixing rod 2 32.

[0032] It should be noted that in the initial state, since the polarity of the magnetic sheet on the limiting block 24 is the same as that of the magnetic block 30, the magnetic repulsion between the magnetic block 30 and the magnetic sheet causes the magnetic block 30 to slide away from the box 11, and the second return spring 31 is squeezed. When the limiting block 24 is pushed up by the first fixing rod 23 and retracted into the second channel, the magnetic sheet and the magnetic block 30 are no longer on the same straight line, and the magnetic block 30 is no longer subject to magnetic repulsion. Then, under the action of the second return spring 31, the magnetic block 30 is pushed to slide, and the magnetic block 30 drives the second fixing rod 32 to slide, which in turn drives the vibrating block 33 to vibrate the filter screen 20.

[0033] Furthermore, a reset spring is fixedly connected to the side wall of the limiting block 24 away from the first channel. The end of the reset spring away from the limiting block 24 is fixed to the side wall of the second channel. Collection pipes are fixedly connected to the outer arc walls of exhaust pipe 12 and exhaust pipe 23 at positions corresponding to the filter screen 20. The collection pipes are interconnected with the interior of exhaust pipe 23. When the filter screen 20 is vibrated by the vibrating block 33, the dust will fall into the collection pipe. A solenoid valve is installed in the collection pipe. The solenoid valve is electrically connected to the touch switch. That is, it is in a closed state during normal air intake. When the filter screen 20 is blocked and the touch switch is triggered, the solenoid valve opens and the airflow channel direction changes.

[0034] Please see the appendix Figure 1 To be continued Figure 3 The present invention provides a technical solution: the box body 11 is a hollow structure, and a rotating shaft 15 is rotatably connected to the middle of the bottom inner wall of the box body 11 away from the air inlet pipe 10. The axial direction of the rotating shaft 15 is consistent with the height direction of the box body 11. A baffle 16 is fixedly connected to the outer arc wall of the rotating shaft 15. Baffles 2 are fixedly connected to both sides of the inner wall of the box body 11 at the interface between the air inlet pipe 10 and the box body 11. The end of the baffle 16 away from the rotating shaft 15 abuts against the side wall of the two baffles 2 that are close to each other.

[0035] It should be noted that when baffle 16 abuts against baffle 2, baffle 16 will not block the interface between the air intake pipe 10 and the housing 11.

[0036] Please see the appendix Figure 1 To be continued Figure 3The present invention provides a technical solution: the end of the rotating shaft 15 away from the bottom inner wall of the box 11 is set through the box 11, and a motor 14 is fixedly connected to the end of the rotating shaft 15 that passes through the box 11. The motor 14 is located on the outside of the box 11, the motor 14 is fixed on the box 11, and the motor 14 is electrically connected to the touch switch.

[0037] It should be noted that when the pressure switch is triggered, the pressure switch controls the operation of the motor 14. In one possible embodiment, the pressure switch is electrically connected to a microcontroller, which is continuously powered by an external power source, and the microcontroller and the motor 14 are electrically connected to each other. When the pressure switch is triggered, the microcontroller receives the signal and controls the start and direction of the motor 14.

[0038] When the filter 20 on one side is blocked and triggers the touch switch, the microcontroller will receive a signal to control the motor 14 to drive the shaft 15 to rotate, thereby changing the orientation of the baffle 16, closing the inlet on that side, and allowing the airflow to pass through the inlet on the other side.

[0039] Furthermore, it also includes: an ash hopper, with an air inlet pipe fixed to the side of the ash hopper, a built-in stepped perforated guide plate, a wire mesh and detection sensor installed above the bottom of the ash hopper, and a sealed maintenance door and audible and visual alarm at the top, providing comprehensive protection for the ash hopper's airflow guidance, maintenance and safety monitoring; the top of the ash hopper body is provided with mounting holes and a vertical level gauge and pressure transmitter are installed, and it also includes a screw, guide rod and cleaning device, the level gauge is electrically connected to the microcontroller, and a horn body is fixed at the connection port of the air inlet pipe on the inner wall of the ash hopper, the horn body is set facing the wire mesh, and an air cannon is mounted on the horn body;

[0040] The cleaning device includes a screw and a guide rod that rotate horizontally on opposite sides of the inner wall of the ash hopper. The screw and the guide rod are fitted with the same sleeve on their outer sides. The outer arc wall of the sleeve is provided with bristles facing the wire mesh. One end of the screw is equipped with a drive source to drive the screw to rotate, thereby driving the sleeve to move back and forth on the wire mesh, further improving the cleaning effect on the wire mesh.

[0041] Working principle:

[0042] After the filter holes on the filter screen 20 are blocked, the area of ​​the filter screen 20 affected by the airflow increases, resulting in an increase in the force. This makes the filter screen 20 more easily moved by the airflow. When most of the filter holes on the filter screen 20 are blocked, that is, when the filtration performance of the filter screen 20 is very low, the filter screen 20 will cause the slider 21, which is away from the housing 11, to touch the touch switch due to excessive displacement. At the same time, the slider 21 drives the fixed rod 23 to move toward the limit block 24. When the fixed rod 23 and the inclined surface of the limit block 24 abut against each other, the limit block 24 is pushed up and slides in the channel 2.

[0043] When the limiting block 24 is pushed up by the fixing rod 23 and retracted into the channel 2, the magnetic sheet and the magnetic block 30 are no longer on the same straight line. The magnetic block 30 is no longer subject to magnetic repulsion. Then, under the action of the reset spring 31, the magnetic block 30 is pushed to slide. The magnetic block 30 drives the fixing rod 32 to slide, which in turn drives the vibrating block 33 to vibrate the filter screen 20.

[0044] When the filter 20 on one side is blocked and triggers the touch switch, the microcontroller will receive a signal to control the motor 14 to drive the shaft 15 to rotate, thereby changing the orientation of the baffle 16, closing the inlet on that side, and allowing the airflow to pass through the inlet on the other side.

Claims

1. A dust collection device for kiln head and kiln tail, comprising an air inlet pipe (10), a housing (11), an exhaust pipe one (12), and an exhaust pipe two (13), wherein the air inlet pipe (10) is fixedly connected to the center of one side wall of the housing (11), and the exhaust pipe one (12) and the exhaust pipe two (13) are respectively fixedly connected to the two ends of the side wall of the housing (11) away from the air inlet pipe (10), and the housing (11) is a hollow structure, characterized in that: Both the first exhaust pipe (12) and the second exhaust pipe (13) are equipped with the same filter mechanism. The filter mechanism includes a filter screen (20) that slides on the inner arc wall of the second exhaust pipe (13). The filter screen (20) is inclined relative to the vertical plane in which the inner arc wall of the second exhaust pipe (13) is located. Two opposite ends of the filter screen (20) are fixedly connected to a slider (21). The slider (21) slides on the inner arc wall of the second exhaust pipe (13). A fixing rod (32) slides on the inner arc wall of the second exhaust pipe (13) on the side of the filter screen (20) away from the box (11). The fixing rod (32) is set in contact with the inner arc wall of the first exhaust pipe (12) and its end is fixedly connected to a vibrating block (33). The vibrating block (33) is set towards the filter screen (20).

2. The kiln head and kiln tail dust collection device as described in claim 1, characterized in that: A groove is provided on the inner arc wall of the exhaust pipe 2 (13) at the position corresponding to the slider 1 (21). The length direction of the groove is parallel to the axial direction of the exhaust pipe 2 (13). The slider 1 (21) slides in the groove. A return spring 1 (22) is fixedly connected to the side wall of the slider 1 (21) away from the fixed rod 2 (32). The end of the return spring 1 (22) away from the slider 1 (21) is fixed to the inner wall of the groove. A fixed rod 1 (23) is fixedly connected to the side wall of the slider 1 (21) away from the return spring 1 (22) on the side closer to the box (11). The length direction of the fixed rod 1 (23) is parallel to the axial direction of the exhaust pipe 2 (13). A touch switch is provided on the inner wall of the groove 1 away from the corresponding slider 1 (21) on the side away from the box (11).

3. The kiln head and kiln tail dust collection device as described in claim 2, characterized in that: A second groove is provided on the inner arc wall of the exhaust pipe (12) at a position corresponding to the side of the fixed rod (23) away from the slider (21). The second groove is in the same length direction as the first groove and is located in the same horizontal plane. A channel is provided through the center of the side wall of the first groove and the second groove. The length direction of the channel is the same as that of the first groove. The end of the fixed rod (23) away from the slider (21) slides in the channel. A second channel is provided on the side of the channel away from the exhaust pipe (13). The length direction of the second channel is perpendicular to the length direction of the first channel. A limit block (24) slides in the second channel. The ends of the fixed rod (23) and the limit block (24) that are close to each other abut against each other. The side walls of the fixed rod (23) and the limit block (24) that are close to each other are both inclined surfaces.

4. The kiln head and kiln tail dust collection device as described in claim 3, characterized in that: A magnetic block (30) slides in a groove on the inner arc wall of the exhaust pipe (13). A magnetic sheet is fixed on the side wall of the limiting block (24) near the magnetic block (30). The magnetic sheet and the magnetic block (30) have the same polarity. A reset spring (31) is fixedly connected on the side wall of the magnetic block (30) away from the limiting block (24). The end of the reset spring (31) away from the magnetic block (30) is fixedly connected to the side wall of the groove. The side wall of the magnetic block (30) near the inside of the exhaust pipe (13) is fixedly connected to the fixing rod (32).

5. The kiln head and kiln tail dust collection device as described in claim 1, characterized in that: The box (11) is a hollow structure. A rotating shaft (15) is rotatably connected to the middle of the bottom inner wall of the box (11) away from the air inlet pipe (10). The axis of the rotating shaft (15) is consistent with the height direction of the box (11). A baffle (16) is fixedly connected to the outer arc wall of the rotating shaft (15). Baffles (2) are fixedly connected to both sides of the inner wall of the box (11) at the interface between the air inlet pipe (10) and the box (11). The end of the baffle (16) away from the rotating shaft (15) abuts against the side wall of the two baffles (2) that are close to each other.

6. The kiln head and kiln tail dust collection device as described in claim 5, characterized in that: The end of the rotating shaft (15) away from the bottom inner wall of the box (11) is set through the box (11), and a motor (14) is fixedly connected to the end of the rotating shaft (15) that passes through the box (11). The motor (14) is located outside the box (11), and the motor (14) is fixed on the box (11) and electrically connected to the touch switch.

7. A kiln head and kiln tail dust collection device as described in any one of claims 1-6, characterized in that: Also includes: The ash hopper has an air inlet pipe fixed to its side and a built-in stepped perforated baffle plate. A wire mesh and detection sensor are installed above the bottom of the ash hopper. The top of the ash hopper has an installation hole and is equipped with a vertical level gauge and a pressure transmitter. It also includes a screw, guide rod and cleaning device.

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