Automatic dust discharging device of bag-type dust collector and dust discharging method of automatic dust discharging device

Abstract

The invention belongs to the technical field of bag-type dust removers, and particularly relates to an automatic dust discharging device of a bag-type dust remover and a dust discharging method thereof.The automatic dust discharging device comprises a dust hopper, a connecting cylinder is arranged below the dust hopper, a dust outlet pipe is connected to the lower portion of the connecting cylinder, an air pipe is connected to one side of the dust outlet pipe, and a top plate is installed at the upper end of the dust hopper; the top plate is connected with a plurality of filter bags mounted in the ash bucket, and the gas pipe is used for conveying waste gas into the ash bucket; a knocking mechanism is arranged on the inner wall of each face of the ash hopper and comprises a first connecting shaft and a plurality of ash discharging blocks fixedly connected to the first connecting shaft. Waste gas enters the dust hopper through the gas pipe to be filtered, the middle plate is continuously pressed to enable the frame to shake and vibrate to clean dust, the unloaded dust is directly conveyed out downwards through the dust outlet pipe, and after the dust is conveyed, the valve on the gas pipe is opened, and the waste gas continues to be conveyed for treatment.

Description

Technical Field

[0001] The invention belongs to the technical field of bag dust collectors, and in particular relates to an automatic dust unloading device for a bag dust collector and a dust unloading method thereof. Background Art

[0002] Bag filter is a dry dust filtering device. After the filter material has been used for a period of time, a layer of dust accumulates on the surface of the filter bag due to the effects of screening, collision, retention, diffusion, static electricity, etc. This layer of dust is called the primary layer. In the subsequent movement process, the primary layer becomes the main filtering layer of the filter material. Relying on the effect of the primary layer, the filter material with a larger mesh can also obtain a higher filtration efficiency.

[0003] During the use of bag dust collector, a layer of dust will accumulate on the filter bags and inner walls due to filtration and long-term contact with exhaust gas. When processing the internal dust, generally only the filter bags are processed, and the inner walls of the ash hopper are not processed, which limits the dust cleaning effect. Summary of the invention

[0004] Based on the background technology, there is a technical problem that during the use of a bag dust collector, a layer of dust will accumulate on the filter bag and the inner wall thereof due to filtration and long-term contact with exhaust gas. When the internal dust is processed, generally only the filter bag is processed, while the inner wall of the ash hopper is not processed, which results in a limited dust cleaning effect. The present invention proposes an automatic dust unloading device for a bag dust collector and a dust unloading method thereof.

[0005] The present invention provides an automatic dust unloading device for a bag dust collector, comprising an ash hopper, a connecting cylinder is arranged below the ash hopper, a dust outlet pipe is connected below the connecting cylinder, an air pipe is connected to one side of the dust outlet pipe, a top plate is installed at the upper end of the ash hopper, a plurality of filter bags installed in the ash hopper are connected to the top plate, and the air pipe is used to transport the exhaust gas into the ash hopper;

[0006] A knocking mechanism is provided on each inner wall of the ash hopper, the knocking mechanism comprising a first connecting shaft and a plurality of ash unloading blocks fixedly connected to the first connecting shaft, and the knocking mechanism is used to knock the inner wall of the ash hopper;

[0007] A vibration mechanism corresponding to the knocking mechanism is provided on each outer wall of the ash hopper, the vibration mechanism comprises a frame, the frame is connected to the outer surface of the ash hopper through a spring, and the vibration mechanism is connected to the knocking mechanism;

[0008] Two adjacent knocking mechanisms are connected together through a driving mechanism, and the driving mechanism includes a worm and a third rotating shaft installed on the surface of the ash hopper through a fixed plate, and the worm and the third rotating shaft are respectively connected to the two knocking mechanisms.

[0009] Preferably, a plurality of fixing rings are provided on the first connecting shaft, the ash unloading block is fixedly clamped in the fixing rings, a slide groove is slidably sleeved on the first connecting shaft, the slide groove is installed on the inner wall of the ash hopper, a fixing shaft is also fixedly connected to the first connecting shaft, the fixing shaft passes through the inner wall of the ash hopper and is fixedly connected to the frame, one end of the spring is fixedly connected to the frame, and the other end is fixedly connected to the outer surface of the ash hopper.

[0010] Preferably, the lower end of each of the first connecting shafts is fixedly connected to a second connecting shaft, and the second connecting shaft is fixedly connected to a knocking shaft.

[0011] Preferably, the vibration mechanism also includes a second rotating shaft and a plurality of pressing rods fixedly connected to the surface of the second rotating shaft, an intermediate plate is provided in the middle section of the frame, the second rotating shaft is rotatably mounted on one side of the intermediate plate through a mounting block, one end of the second rotating shaft is connected to the first rotating shaft through a traction shaft, the first rotating shaft is also rotatably mounted on the surface of the ash hopper through a mounting block, and the driving mechanism is used to drive the first rotating shaft to rotate.

[0012] Preferably, a first protruding shaft is provided at one end of the second rotating shaft away from the mounting block, a second protruding shaft is provided at one end of the first rotating shaft, and the traction shaft is connected to the second protruding shaft and one end of the first protruding shaft.

[0013] Preferably, the driving mechanism further comprises a motor fixedly mounted on the surface of the ash hopper via a motor plate, and a driving end of the motor is fixedly connected to one of the first rotating shafts.

[0014] Preferably, a worm wheel is fixedly sleeved on an adjacent one of the first rotating shafts, a first bevel gear is fixedly sleeved on another adjacent one of the first rotating shafts, one end of the worm is meshed with the worm wheel, a second bevel gear is fixedly sleeved on one end of the third rotating shaft, the second bevel gear is meshed with the first bevel gear, the other end of the worm is fixedly sleeved on the third bevel gear, the other end of the third rotating shaft is fixedly sleeved on the fourth bevel gear, and the fourth bevel gear is meshed with the third bevel gear.

[0015] Preferably, a pulse valve is installed at the upper end of each filter bag, a plurality of pressing rods are installed on the second rotating shaft at staggered angles to each other, and a valve is provided on the air pipe.

[0016] The present invention also provides a dust unloading method of an automatic dust unloading device for a bag dust collector, comprising the following operating steps:

[0017] Step S1: When the dust in the ash hopper needs to be cleaned, the valve in the air pipe closes it, and the filter bag vibrates the dust attached to its surface through the pulse valve, and the dust falls down along the connecting tube and is transported downward through the dust outlet pipe;

[0018] Step S2: When it is necessary to clean the dust on the inner wall of the ash hopper, the driving mechanism is started, the motor drives the connected first rotating shaft to rotate through the driving end, the first rotating shaft drives the worm to rotate, the worm drives the third rotating shaft to rotate, and the rotation of the third rotating shaft drives the connected first rotating shaft to rotate;

[0019] Step S3: The two first rotating shafts rotate synchronously, the first rotating shaft drives the second rotating shaft to rotate through the traction shaft, and the second rotating shaft drives each pressing rod installed on its surface to rotate, and each pressing rod will continuously press the middle plate when rotating, and the pressed frame will reset under the elastic force of the spring, and the vibration mechanism will continuously act on the knocking mechanism;

[0020] Step S4: The frame vibration drives the first connecting shaft to vibrate through the fixed shaft, and the first connecting shaft drives the ash unloading blocks arranged thereon to vibrate, and the ash unloading blocks knock on the inner wall of the ash hopper, and the ash unloading blocks knock on the inner wall of the ash hopper at a high frequency and quickly;

[0021] Step S5: The unloaded dust is directly transported downward through the dust outlet pipe. After the dust is transported, the valve on the air pipe is opened to continue to transport the waste gas for treatment.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. In the process of filtering the exhaust gas, the particulate oil retained and attached to the inner surface is effectively cleaned, and the exhaust gas enters the ash hopper through the air pipe for filtration. By continuously pressing the middle plate to make the frame shake, the knocking mechanism knocks on the inner wall of the ash hopper to vibrate and clean the dust. The unloaded dust is directly transported downward through the dust outlet pipe. After the dust is transported, the valve on the air pipe is opened to continue to transport the exhaust gas for treatment;

[0024] 2. When the frame is pressed, it will be affected by the spring and move back and forth continuously. The frame drives the first connecting shaft to move back and forth through the fixed shaft. The back and forth movement of the first connecting shaft will cause the ash unloading block to continuously knock against the inner wall of the ash hopper. Therefore, under the action of vibration, the dust attached to the inner wall of the ash hopper will be knocked down and cleaned out. The close-range knocking ash unloading method can effectively avoid the large-scale dust raising. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the three-dimensional structure of an automatic dust removal device for a bag dust collector proposed by the present invention;

[0026] Figure 2 A schematic diagram of the internal structure of an automatic dust removal device for a bag dust collector proposed by the present invention;

[0027] Figure 3 for Figure 2 A magnified view of the structure at center A;

[0028] Figure 4 This is a schematic diagram of the top plan structure of an automatic dust unloading device for a bag dust collector proposed by the present invention;

[0029] Figure 5 This is a front planar structural schematic diagram of an automatic dust removal device for a bag dust collector proposed by the present invention;

[0030] Figure 6 It is a structural schematic diagram of the vibration mechanism and the driving mechanism;

[0031] Figure 7 for Figure 6 A magnified view of the structure at B in the middle;

[0032] Figure 8 for Figure 6 Enlarged view of the structure at C in the middle.

[0033] In the figure: 1 ash hopper, 2 air pipe, 3 dust outlet pipe, 4 connecting tube, 5 top plate, 6 filter bag, 7 frame, 8 worm, 9 third rotating shaft, 10 first rotating shaft, 11 second rotating shaft, 12 pressing rod, 13 knocking shaft, 14 second connecting shaft, 15 first connecting shaft, 16 ash unloading block, 17 slide groove, 18 fixed shaft, 19 first bevel gear, 20 second bevel gear, 21 third bevel gear, 22 fourth bevel gear, 23 spring, 24 motor plate, 25 motor, 26 worm gear, 27 fixed plate, 28 traction shaft, 29 first cam shaft, 30 second cam shaft, 31 middle plate. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] Reference Figure 1-Figure 8 , an automatic dust unloading device for a bag dust collector, comprising an ash hopper 1, a connecting tube 4 is arranged below the ash hopper 1, a dust outlet pipe 3 is connected below the connecting tube 4, an air pipe 2 is connected to one side of the dust outlet pipe 3, a top plate 5 is installed at the upper end of the ash hopper 1, a plurality of filter bags 6 installed in the ash hopper 1 are connected to the top plate 5, and the air pipe 2 is used to transport the exhaust gas into the ash hopper 1;

[0036] A knocking mechanism is provided on each inner wall of the ash hopper 1, and the knocking mechanism includes a first connecting shaft 15 and a plurality of ash unloading blocks 16 fixedly connected to the first connecting shaft 15, and the knocking mechanism is used to knock the inner wall of the ash hopper 1;

[0037] A vibration mechanism corresponding to the knocking mechanism is provided on each outer wall of the ash hopper 1, and the vibration mechanism includes a frame 7, the frame 7 is connected to the outer surface of the ash hopper 1 through a spring 23, and the vibration mechanism is connected to the knocking mechanism;

[0038] Two adjacent knocking mechanisms are connected together through a driving mechanism, which includes a worm 8 and a third rotating shaft 9 mounted on the surface of the ash hopper 1 through a fixed plate 27, and the worm 8 and the third rotating shaft 9 are connected to the two knocking mechanisms respectively.

[0039] A plurality of fixing rings are arranged on the first connecting shaft 15, and the ash unloading block 16 is fixedly connected in the fixing rings. A slide groove 17 is slidably sleeved on the first connecting shaft 15, and the slide groove 17 is installed on the inner wall of the ash hopper 1. A fixing shaft 18 is also fixedly connected to the first connecting shaft 15, and the fixing shaft 18 passes through the inner wall of the ash hopper 1 and is fixedly connected to the frame 7. One end of the spring 23 is fixedly connected to the frame 7, and the other end is fixedly connected to the outer surface of the ash hopper 1. When the frame 7 is pressed, the frame 7 is affected by the spring 23 to move back and forth continuously, and the frame 7 drives the first connecting shaft 15 to move back and forth through the fixing shaft 18. The back and forth movement of the first connecting shaft 15 causes the ash unloading block 16 to continuously knock against the inner wall of the ash hopper 1, so that under the action of vibration, the dust attached to the inner wall of the ash hopper 1 is knocked down and cleaned out. The close-range knocking ash unloading method can effectively avoid the dust from being raised in a large range.

[0040] The lower end of each first connecting shaft 15 is fixedly connected to the second connecting shaft 14, and the second connecting shaft 14 is fixedly connected to the knocking shaft 13. When the first connecting shaft 15 vibrates back and forth, it will also drive the second connecting shaft 14 and the knocking shaft 13 to move synchronously, and the vibrating knocking shaft 13 will knock the inner wall of the connecting tube 4, thereby processing the dust attached to the inner wall of the connecting tube 4.

[0041] The vibration mechanism also includes a second rotating shaft 11 and a plurality of pressing rods 12 fixedly connected to the surface of the second rotating shaft 11. An intermediate plate 31 is provided in the middle section of the frame 7. The second rotating shaft 11 is rotatably mounted on one side of the intermediate plate 31 through a mounting block. One end of the second rotating shaft 11 is connected to the first rotating shaft 10 through a traction shaft 28. The first rotating shaft 10 is also rotatably mounted on the surface of the ash hopper 1 through a mounting block. The driving mechanism is used to drive the first rotating shaft 10 to rotate. When the driving mechanism drives the first rotating shaft 10 to rotate, the second rotating shaft 11 can be driven to rotate through the traction shaft 28. As the second rotating shaft 11 rotates, the plurality of pressing rods 12 installed on its surface can be driven to rotate. When the pressing rods 12 rotate, they will continuously contact the intermediate plate 31. By continuously pressing the intermediate plate 31, the frame 7 is shaken, so that the knocking mechanism knocks the inner wall of the ash hopper 1 to vibrate and clean the dust.

[0042] The first protruding shaft 29 is arranged at one end of the second rotating shaft 11 away from the mounting block, the second protruding shaft 30 is arranged at one end of the first rotating shaft 10, and the traction shaft 28 is connected to one end of the second protruding shaft 30 and the first protruding shaft 29. When the first rotating shaft 10 rotates, the second protruding shaft 30 is driven to rotate, and when the second protruding shaft 30 rotates, the traction shaft 28 is pulled. The positions of the first rotating shaft 10 and the second rotating shaft 11 are fixed, and the first protruding shaft 29 is driven to deflect under the pulling action of the traction shaft 28. As the first protruding shaft 29 deflects, the second rotating shaft 11 can rotate, and then the operation of the vibration mechanism is realized.

[0043] The driving mechanism also includes a motor 25 fixedly mounted on the surface of the ash hopper 1 through a motor plate 24, and a driving end of the motor 25 is fixedly connected to one of the first rotating shafts 10. When the driving end of the motor 25 drives the first rotating shaft 10 to rotate, the vibration mechanism can be activated as the first rotating shaft 10 rotates to achieve the function of cleaning dust.

[0044] A worm wheel 26 is fixedly sleeved on one adjacent first rotating shaft 10, a first bevel gear 19 is fixedly sleeved on another adjacent first rotating shaft 10, one end of the worm 8 is meshed with the worm wheel 26, one end of the third rotating shaft 9 is fixedly sleeved with the second bevel gear 20, the second bevel gear 20 is meshed with the first bevel gear 19, the other end of the worm 8 is fixedly sleeved with the third bevel gear 21, the other end of the third rotating shaft 9 is fixedly sleeved with the fourth bevel gear 22, the fourth bevel gear 22 is meshed with the third bevel gear 21. When two adjacent vibration mechanisms need to operate synchronously, when one of the first rotating shafts 10 is driven to rotate by the motor 25, the first rotating shaft 10 drives the worm wheel 26 to rotate, the worm wheel 26 drives the worm 8 to rotate, the worm 8 drives the third bevel gear 21 to rotate, the third bevel gear 21 drives the fourth bevel gear 22 to rotate, the fourth bevel gear 22 drives the third rotating shaft 9 to rotate, the third rotating shaft 9 drives the second bevel gear 20 to rotate, the second bevel gear 20 drives the first bevel gear 19 to rotate, and then the other adjacent first rotating shaft 10 rotates.

[0045] A pulse valve is installed at the upper end of each filter bag 6, and a plurality of pressing rods 12 are installed on the second rotating shaft 11 at staggered angles, and a valve is provided on the air pipe 2. By controlling the pulse valve, each filter bag 6 can be pulse-vibrated, so that the dust attached to its surface can be vibrated and cleaned.

[0046] A dust unloading method for an automatic dust unloading device of a bag dust collector comprises the following steps:

[0047] Step S1: When the dust in the ash hopper 1 needs to be cleaned, the valve in the air pipe 2 closes it, and the filter bag 6 vibrates the dust attached to its surface through the pulse valve, and the dust falls downward along the connecting tube 4 and is transported downward through the dust outlet pipe 3;

[0048] Step S2: When it is necessary to clean the dust on the inner wall of the ash hopper 1, the driving mechanism is started, the motor 25 drives the connected first rotating shaft 10 to rotate through the driving end, the first rotating shaft 10 drives the worm gear 26 fixedly connected to its surface to rotate, the worm gear 26 is meshed with the worm 8 to make the worm 8 rotate, the worm 8 drives the third bevel gear 21 at one end to rotate, the third bevel gear 21 is meshed with the fourth bevel gear 22, so that the worm 8 drives the third rotating shaft 9 to rotate, the third rotating shaft 9 drives the connected second bevel gear 20 to rotate, the second bevel gear 20 is meshed with the first bevel gear 19, so that the rotation of the third rotating shaft 9 drives the connected first rotating shaft 10 to rotate;

[0049] Step S3: The two first rotating shafts 10 will rotate synchronously. As the first rotating shaft 10 rotates, the second convex shaft 30 fixedly installed at one end is driven to rotate. The second convex shaft 30 pulls the traction shaft 28 to move. The traction shaft 28 drives the connected first convex shaft 29 to deflect. Then, as the first convex shaft 29 deflects, the second rotating shaft 11 is rotated. The rotation of the second rotating shaft 11 drives the various pressing rods 12 installed on its surface to rotate. When the various pressing rods 12 rotate, they will continuously contact with the middle plate 31 and continuously press the middle plate 31. The middle plate 31 is integrally formed with the frame 7. The pressed frame 7 will reset under the elastic force of the spring 23, and the vibration mechanism will continuously act on the knocking mechanism.

[0050] Step S4: The vibration of the frame 7 drives the first connecting shaft 15 to vibrate through the fixed shaft 18, and the first connecting shaft 15 drives the various ash unloading blocks 16 arranged thereon to vibrate, and the ash unloading blocks 16 knock on the inner wall of the ash hopper 1. Each inner wall surface of the ash hopper 1 is provided with an ash unloading block 16, and the ash unloading block 16 knocks on the inner wall of the ash hopper 1 at a high frequency and quickly, effectively shaking off the dust attached to the inner wall, thereby achieving the effect of unloading ash. At the same time, the lower end of the first connecting shaft 15 is connected to the knocking shaft 13 through the second connecting shaft 14, and the knocking shaft 13 knocks on the inner wall of the connecting tube 4 to clean the inner wall of the connecting tube 4;

[0051] Step S5: In the process of filtering the exhaust gas, the particulate oil retained and attached to the inner surface is effectively cleaned, the exhaust gas enters the ash hopper 1 through the air pipe 2 for filtration, and the unloaded dust is directly transported downward through the dust outlet pipe 3. After the dust is transported, the valve on the air pipe 2 is opened to continue to transport the exhaust gas for treatment.

[0052] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An automatic dust removal device for a bag filter, comprising an ash hopper (1), characterized in that: A connecting tube (4) is provided below the ash hopper (1), a dust outlet pipe (3) is connected below the connecting tube (4), one side of the dust outlet pipe (3) is connected to an air pipe (2), a top plate (5) is installed at the upper end of the ash hopper (1), a plurality of filter bags (6) installed in the ash hopper (1) are connected to the top plate (5), and the air pipe (2) is used to transport waste gas into the ash hopper (1); A knocking mechanism is provided on each inner wall of the ash hopper (1), the knocking mechanism comprising a first connecting shaft (15) and a plurality of ash discharge blocks (16) fixedly connected to the first connecting shaft (15), the knocking mechanism being used to knock the inner wall of the ash hopper (1); A vibration mechanism corresponding to the knocking mechanism is provided on each outer wall of the ash hopper (1), the vibration mechanism comprising a frame (7), the frame (7) being connected to the outer surface of the ash hopper (1) via a spring (23), and the vibration mechanism being connected to the knocking mechanism; Two adjacent knocking mechanisms are connected together via a driving mechanism, wherein the driving mechanism comprises a worm (8) and a third rotating shaft (9) mounted on the surface of the ash hopper (1) via a fixed plate (27), and the worm (8) and the third rotating shaft (9) are respectively connected to the two knocking mechanisms.

2. The automatic dust removal device for bag dust collector according to claim 1 is characterized in that: The first connecting shaft (15) is provided with a plurality of fixing rings, the ash unloading block (16) is fixedly connected in the fixing rings, the first connecting shaft (15) is slidably sleeved with a slide groove (17), the slide groove (17) is installed on the inner wall of the ash hopper (1), the first connecting shaft (15) is also fixedly connected with a fixing shaft (18), the fixing shaft (18) passes through the inner wall of the ash hopper (1) and is fixedly connected to the frame (7), one end of the spring (23) is fixedly connected to the frame (7), and the other end is fixedly connected to the outer surface of the ash hopper (1).

3. The automatic dust removal device for bag dust collector according to claim 2 is characterized in that: The lower end of each of the first connecting shafts (15) is fixedly connected to a second connecting shaft (14), and the second connecting shaft (14) is fixedly connected to a knocking shaft (13).

4. The automatic dust removal device for bag dust collector according to claim 1, characterized in that: The vibration mechanism also includes a second rotating shaft (11) and a plurality of pressing rods (12) fixedly connected to the surface of the second rotating shaft (11); an intermediate plate (31) is provided in the middle section of the frame (7); the second rotating shaft (11) is rotatably mounted on one side of the intermediate plate (31) via a mounting block; one end of the second rotating shaft (11) is connected to the first rotating shaft (10) via a traction shaft (28); the first rotating shaft (10) is also rotatably mounted on the surface of the ash hopper (1) via a mounting block; and the driving mechanism is used to drive the first rotating shaft (10) to rotate.

5. The automatic dust removal device for bag dust collector according to claim 4, characterized in that: A first protruding shaft (29) is arranged at one end of the second rotating shaft (11) away from the mounting block, a second protruding shaft (30) is arranged at one end of the first rotating shaft (10), and the traction shaft (28) is connected to one end of the second protruding shaft (30) and the first protruding shaft (29).

6. The automatic dust removal device for bag dust collector according to claim 5, characterized in that: The driving mechanism further comprises a motor (25) fixedly mounted on the surface of the ash hopper (1) via a motor plate (24), and a driving end of the motor (25) is fixedly connected to one of the first rotating shafts (10).

7. The automatic dust removal device for bag dust collector according to claim 6, characterized in that: A worm wheel (26) is fixedly sleeved on one of the adjacent first rotating shafts (10), a first bevel gear (19) is fixedly sleeved on another adjacent first rotating shaft (10), one end of the worm (8) is meshed with the worm wheel (26), one end of the third rotating shaft (9) is fixedly sleeved with a second bevel gear (20), the second bevel gear (20) is meshed with the first bevel gear (19), the other end of the worm (8) is fixedly sleeved with a third bevel gear (21), the other end of the third rotating shaft (9) is fixedly sleeved with a fourth bevel gear (22), the fourth bevel gear (22) is meshed with the third bevel gear (21).

8. The automatic dust removal device for bag dust collector according to claim 4, characterized in that: A pulse valve is installed at the upper end of each filter bag (6), a plurality of pressing rods (12) are installed on the second rotating shaft (11) at staggered angles to each other, and a valve is provided on the air pipe (2).

9. A dust unloading method for an automatic dust unloading device for a bag dust collector according to any one of claims 1 to 8, characterized in that: The steps include: Step S1: When the dust in the ash hopper (1) needs to be cleaned, the valve in the air pipe (2) closes it, and the filter bag (6) vibrates the dust attached to its surface through the pulse valve, and the dust falls downward along the connecting tube (4) and is transported downward through the dust outlet pipe (3); Step S2: When it is necessary to clean the dust on the inner wall of the ash hopper (1), the driving mechanism is started, the motor (25) drives the connected first rotating shaft (10) to rotate through the driving end, the first rotating shaft (10) drives the worm (8) to rotate, the worm (8) drives the third rotating shaft (9) to rotate, and the rotation of the third rotating shaft (9) drives the connected first rotating shaft (10) to rotate; Step S3: The two first rotating shafts (10) rotate synchronously. The first rotating shaft (10) drives the second rotating shaft (11) to rotate through the traction shaft (28). The second rotating shaft (11) drives the pressing rods (12) installed on the surface thereof to rotate. When the pressing rods (12) rotate, they continuously press the middle plate (31). The pressed frame (7) is reset under the elastic force of the spring (23), and the vibration mechanism continuously acts on the knocking mechanism. Step S4: The frame (7) vibrates, which drives the first connecting shaft (15) to vibrate through the fixed shaft (18), and the first connecting shaft (15) drives the ash unloading blocks (16) arranged thereon to vibrate, and the ash unloading blocks (16) knock on the inner wall of the ash hopper (1), and the ash unloading blocks (16) knock on the inner wall of the ash hopper (1) at a high frequency and quickly; Step S5: The unloaded dust is directly transported downward through the dust outlet pipe (3). After the dust is transported, the valve on the air pipe (2) is opened to continue transporting the waste gas for treatment.

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