A dust filtering device generated by waste incineration power generation

Abstract

This invention discloses a dust filtration device for waste incineration power generation, belonging to the field of waste incineration power generation technology. It solves the problems of existing devices where dust adheres to the filter frame during flue gas discharge, easily causing filter blockage and reducing the flue gas discharge rate. Furthermore, the filtration effect is poor due to relying solely on the filtration mechanism. The invention includes a chimney mechanism with a fixed plate fixedly installed on its top surface. A flue gas outlet is formed in the center of the top surface of the fixed plate, and a three-way pipe connected to the outlet is fixedly installed in the center of the top surface of the fixed plate. A first filtration mechanism is installed in the fixed plate, and a second filtration mechanism is installed in the three-way pipe. The first and second filtration mechanisms can filter the flue gas. By driving the flue gas outlet pipe and the filter bucket to rotate synchronously, the rotation of the filter bucket disperses the dust particles attached to the filter bucket and filter cylinder, improving flue gas discharge efficiency.

Description

Technical Field

[0001] This invention relates to the field of waste incineration power generation technology, specifically to a dust filtration device generated during waste incineration power generation. Background Technology

[0002] Waste incineration power generation is one of the important ways to harmlessly treat municipal solid waste. It plays an important role in improving urban environmental sanitation and solving environmental problems. The flue gas produced during waste incineration is discharged into the air through chimneys. The flue gas produced during waste incineration contains dust. If the dust-containing gas is not filtered and treated, direct discharge will cause environmental pollution. In addition, the dust may also contain harmful substances, which can be harmful to health if absorbed by the human body.

[0003] A search revealed that patent application number 202010901801.0 discloses a dust filtration and recovery device generated from waste incineration power generation, comprising a chimney mechanism. A fixed plate is fixedly installed on the upper surface of the chimney mechanism, and a smoke outlet is opened inside the fixed plate. An exhaust pipe is fixedly installed on the inner wall of the smoke outlet. Four support rods are fixedly installed on the upper surface of the fixed plate, and a fixed box is fixedly installed above the four support rods. Insertion seats are fixedly installed on both sides of the inner wall of the fixed box, and a through groove is opened on the lower inner wall of the fixed box. One end of the exhaust pipe extends into the interior of the fixed box through the through groove. A filtration mechanism is arranged between the insertion seats. A flue pipe is fixedly installed above the fixed box, and the interior of the flue pipe is interconnected with the interior of the fixed box. A connecting pipe is fixedly installed at the rear end of the fixed box, and a storage mechanism is arranged below the rear end of the chimney mechanism.

[0004] Although the dust filtration and recovery device for waste incineration power generation is equipped with a fixed box, a filtration mechanism, a storage mechanism, and an exhaust pipe, so that when the flue gas is treated by the flue gas filtration device in the waste power plant and discharged to the outside through the chimney mechanism, the flue gas will enter the interior of the fixed box through the exhaust pipe and be filtered by the filter frame before being discharged. After the flue gas is discharged, the dust on the filter frame is cleaned by the storage mechanism. However, when the flue gas is discharged, the dust will adhere to the filter frame, which will easily cause the filter frame to become clogged, thereby reducing the discharge rate of the flue gas. Moreover, the filtration effect of filtering the flue gas is poor because it only relies on the filtration mechanism.

[0005] Therefore, we propose a dust filtration device for waste incineration power generation. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a dust filtration device for waste incineration power generation. This solves the problems of existing devices where dust adheres to the filter frame during flue gas discharge, easily causing filter blockage and reducing the flue gas discharge rate, and the poor filtration effect of relying solely on the filtration mechanism.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a dust filtration device for waste incineration power generation, comprising a chimney mechanism, a fixed plate fixedly installed on the top surface of the chimney mechanism, a smoke outlet hole opened in the middle of the top surface of the fixed plate, a three-way pipe fixedly installed in the middle of the top surface of the fixed plate and communicating with the smoke outlet hole, a first filtration mechanism disposed in the fixed plate, a second filtration mechanism disposed in the three-way pipe, and a smoke exhaust assembly disposed on the right side of the three-way pipe, the first filtration mechanism comprising a smoke outlet pipe rotatably fitted inside the smoke outlet hole via a bearing ring, and a filter bucket fixedly installed on the bottom surface of the smoke outlet pipe. The top of the outer surface of the smoke outlet pipe is fixedly fitted with a first gear ring. The bottom and side of the filter bucket are provided with evenly distributed first dust filter holes. The left and right ends of the three-way pipe are respectively fixedly installed with a left baffle and a right baffle. The second filtration mechanism includes a filter cylinder that is rotatably fitted inside the top of the three-way pipe via a bearing ring. The arc surface of the filter cylinder is provided with evenly distributed second dust filter holes. The outer surface of the filter cylinder is fixedly fitted with a second gear ring that meshes with the first gear ring. A motor is fixedly installed in the middle of the side wall of the left baffle. The output end of the motor passes through the side wall of the left baffle and is fixedly installed in the middle of the side wall of the filter cylinder.

[0008] Preferably, the diameter of the first dust filter hole is 300 μm and the diameter of the second dust filter hole is 200 μm. The size of the dust particles is usually less than 500 μm. The first dust filter hole can filter larger dust particles in the flue gas, and the second dust filter hole can filter smaller dust particles in the flue gas. The dust particles filtered by the second dust filter hole can pass through the first dust filter hole and be discharged into the interior.

[0009] Preferably, the filter cartridge has an opening at the left end, the filter element is cylindrical, and a smoke exhaust hole is provided through the middle of the side of the filter element. The flue gas filtered by the filter bucket and filter cartridge will pass through the filter element and then enter the interior of the smoke exhaust hole, thereby causing smaller dust particles to adhere to the outer surface of the filter element.

[0010] Preferably, the inner layer of the filter element is a stainless steel filter screen, and the outer layer of the filter element is a fluoromethylene needle-punched felt. The fluoromethylene needle-punched felt is fixedly fitted onto the outer surface of the stainless steel filter screen. The filter element filters the flue gas, and both the stainless steel filter screen and the fluoromethylene needle-punched felt are made of high-temperature resistant materials with a long service life. Their filtration effect will not decrease due to the influence of high-temperature environment, thus enabling sufficient filtration of dust in the flue gas.

[0011] Preferably, the top end of the smoke outlet pipe is inserted into the inside of the bottom end of the tee pipe, and the outer wall of the smoke outlet pipe is in contact with the inner wall of the bottom end of the tee pipe. By making the outer wall of the smoke outlet pipe in contact with the inner wall of the bottom end of the tee pipe, dust can be prevented from entering the gap between the smoke outlet pipe and the tee pipe, thus avoiding the situation where it is difficult to clean the dust in the gap.

[0012] Preferably, the first filtration mechanism further includes a U-shaped plate fixedly installed on the bottom surface of the fixed plate. The outline of the U-shaped plate matches the outline of the filter bucket. Cleaning filaments are evenly distributed and fixedly installed on the side wall of the U-shaped plate near the filter bucket. The cleaning filaments can clean the filter bucket, which helps to separate dust particles from the filter bucket.

[0013] Preferably, the cleaning wire contacts the outer surface of the filter bucket, and the cleaning wire corresponds to the position of the first dust filter hole. The cleaning wire is made of steel wire. When the smoke exhaust stops, the rotation of the filter cylinder causes smaller dust particles to fly in all directions. The smaller dust particles on the filter cylinder will enter the interior of the filter bucket through the three-way pipe and the smoke outlet pipe, and finally be discharged through the first dust filter hole, allowing the dust particles to continue to return to the interior of the chimney mechanism. When the filter bucket rotates, the cleaning wire can clean the larger dust particles on the filter bucket and the first dust filter hole, avoiding the situation where dust particles adhere to the filter bucket and the first dust filter hole, thereby preventing the smoke exhaust or dust particle discharge from being obstructed.

[0014] Preferably, the smoke exhaust assembly includes a smoke exhaust pipe fixedly installed in the middle of the side wall of the right baffle, a smoke exhaust pipe fixedly installed at the top of the smoke exhaust pipe, and the smoke exhaust pipe is connected to the smoke exhaust hole. The smoke filtered by the filter element enters the interior of the smoke exhaust hole, and then the smoke inside the smoke exhaust hole enters the interior of the smoke exhaust pipe, and is finally discharged into the air through the smoke exhaust pipe.

[0015] This invention provides a dust filtration device for waste incineration power generation. It has the following beneficial effects:

[0016] 1. The dust filtration device for waste incineration power generation filters flue gas through a first filtration mechanism and a second filtration mechanism. The flue gas undergoes a first filtration through the first dust filter hole, a second filtration through the second dust filter hole, and a third filtration through the filter element, thus improving the filtration efficiency. A motor drives the filter cylinder and its outer surface's second gear ring to rotate, which in turn drives the first gear ring to rotate, causing the exhaust pipe and filter bucket to rotate synchronously. During exhaust, the rotation of the filter bucket causes larger dust particles attached to the filter bucket and the first dust filter hole to disperse towards the filter bucket's perimeter under centrifugal force. Simultaneously, the rotation of the filter cylinder disperses smaller dust particles attached to the filter cylinder and the second dust filter hole, preventing dust particles from clogging the first or second dust filter hole. This improves exhaust efficiency and solves the problems of existing devices where dust adheres to the filter frame during exhaust, easily causing clogging and reducing the exhaust rate, and the poor filtration effect due to relying solely on the filtration mechanism.

[0017] 2. When the dust filtration device generated by the waste incineration power generation stops exhausting, the filter cylinder rotates, causing smaller dust particles to fly in all directions. The smaller dust particles on the filter cylinder will enter the interior of the filter bucket through the three-way pipe and the exhaust pipe, and finally be discharged through the first dust filter hole. This achieves the purpose of facilitating the discharge of dust particles, allowing the dust particles to continue to return to the interior of the chimney mechanism. This avoids the need for separate storage and cleaning of dust particles, which helps to reduce the footprint of the filtration device and lower the operating cost of the filtration device.

[0018] 3. The dust filtration device generated by the waste incineration power generation, when the filter bucket rotates, the filter bucket will come into contact with the cleaning wire. By setting the cleaning wire and the filter bucket in opposite positions, the cleaning wire can clean larger dust particles on the filter bucket and the first dust filter hole, thus avoiding the situation where dust particles adhere to the filter bucket and the first dust filter hole, which would lead to the obstruction of smoke exhaust or dust particle discharge. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a side view of the structure of the present invention;

[0021] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0022] Figure 4 This is a schematic diagram of the first filtration mechanism of the present invention;

[0023] Figure 5This is a schematic diagram of the bottom structure of the first filtration mechanism of the present invention;

[0024] Figure 6 This is a schematic cross-sectional view of the tee pipe structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the first and second filtration mechanisms of the present invention;

[0026] Figure 8 This is a schematic diagram of the split structure of the second filtration mechanism of the present invention.

[0027] In the diagram: 1. Chimney mechanism; 2. Fixed plate; 21. Smoke outlet; 3. First filtration mechanism; 31. Smoke outlet pipe; 32. Filter hopper; 33. First gear ring; 34. U-shaped plate; 35. Cleaning filament; 36. First dust filter hole; 4. T-shaped pipe; 41. Left baffle; 42. Right baffle; 5. Second filtration mechanism; 51. Filter cylinder; 52. Filter element; 521. Smoke outlet; 53. Motor; 54. Second gear ring; 55. Second dust filter hole; 6. Smoke exhaust assembly; 61. Smoke exhaust pipe; 62. Smoke exhaust hopper. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1:

[0030] like Figure 1-8As shown: The system includes a chimney mechanism 1. A fixed plate 2 is fixedly installed on the top surface of the chimney mechanism 1. A smoke outlet 21 is opened in the middle of the top surface of the fixed plate 2. A three-way pipe 4 connected to the smoke outlet 21 is fixedly installed in the middle of the top surface of the fixed plate 2. A first filter mechanism 3 is installed in the fixed plate 2, and a second filter mechanism 5 is installed in the three-way pipe 4. A smoke exhaust assembly 6 is installed on the right side of the three-way pipe 4. The first filter mechanism 3 includes a smoke outlet pipe 31 that is rotatably fitted inside the smoke outlet 21 via a bearing ring. A filter bucket 32 ​​is fixedly installed on the bottom surface of the smoke outlet pipe 31. A first gear ring 33 is fixedly fitted on the top of the outer surface of the smoke outlet pipe 31. The bottom and sides of the filter bucket 32 ​​are both open... The filter has uniformly distributed first dust filter holes 36. A left baffle 41 and a right baffle 42 are fixedly installed at the left and right ends of the three-way pipe 4, respectively. The second filter mechanism 5 includes a filter cylinder 51 rotatably mounted inside the top of the three-way pipe 4 via a bearing ring. The arc surface of the filter cylinder 51 has uniformly distributed second dust filter holes 55. A second gear ring 54, meshing with a first gear ring 33, is fixedly mounted on the outer surface of the filter cylinder 51. A motor 53 is fixedly installed in the middle of the side wall of the left baffle 41. The output end of the motor 53 passes through the side wall of the left baffle 41 and is fixedly installed in the middle of the side wall of the filter cylinder 51. The diameter of the first dust filter holes 36 is 300 μm, and the diameter of the second dust filter holes 55 is... The filter element 52 has a diameter of 100μm and an opening at the left end of the filter cylinder 51. The filter element 52 is cylindrical, with a smoke exhaust hole 521 penetrating through the center of its side. The inner layer of the filter element 52 is a stainless steel filter screen, and the outer layer is a fluoropolymer needle-punched felt, which is fixedly fitted onto the outer surface of the stainless steel filter screen. The first filtration mechanism 3 and the second filtration mechanism 5 can filter the flue gas. The flue gas undergoes a first filtration through the first dust filter hole 36, a second filtration through the second dust filter hole 55, and a third filtration through the filter element 52, thus improving the filtration effect. The motor 53 drives... The rotating filter cylinder 51 and the second gear ring 54 on its outer surface rotate, which in turn drives the first gear ring 33 to rotate, which in turn drives the smoke outlet pipe 31 and the filter bucket 32 ​​to rotate synchronously. When exhausting smoke, the rotation of the filter bucket 32 ​​causes larger dust particles attached to the filter bucket 32 ​​and the first dust filter hole 36 to fly around the filter bucket 32 ​​under the action of centrifugal force. When the filter cylinder 51 rotates, smaller dust particles attached to the filter cylinder 51 and the second dust filter hole 55 will also fly around the filter cylinder 51, which avoids the situation where dust particles block the first dust filter hole 36 or the second dust filter hole 55, and helps to improve the smoke exhaust efficiency.

[0031] Example 2:

[0032] like Figure 1 , 2As shown in figures 3, 4, 5, and 7: The top end of the smoke outlet pipe 31 is inserted into the interior of the bottom end of the three-way pipe 4. The outer wall of the smoke outlet pipe 31 is in contact with the inner wall of the bottom end of the three-way pipe 4. The first filter mechanism 3 also includes a U-shaped plate 34 fixedly installed on the bottom surface of the fixed plate 2. The outline of the U-shaped plate 34 matches the outline of the filter hopper 32. Cleaning filaments 35 are evenly distributed and fixedly installed on the side wall of the U-shaped plate 34 near the filter hopper 32. The cleaning filaments 35 are in contact with the outer surface of the filter hopper 32, and the positions of the cleaning filaments 35 and the first dust filter holes 36 correspond. The cleaning filaments 35 are made of steel wire. When the smoke is not discharged, the filter cylinder 51 rotates, causing smaller dust particles to fly in all directions. The smaller dust particles on the filter cylinder 51 will pass through the three-way pipe 4 and the smoke outlet pipe 31. The dust particles enter the interior of the filter hopper 32 and are finally discharged through the first dust filter hole 36, which facilitates the discharge of dust particles and allows them to return to the interior of the chimney mechanism 1. This avoids the need for separate storage and cleaning of dust particles, reduces the floor space of the filter device, and lowers the operating cost of the filter device. When the filter hopper 32 rotates, it comes into contact with the cleaning wire 35. The relative position of the cleaning wire 35 and the filter hopper 32 allows the cleaning wire 35 to clean larger dust particles on the filter hopper 32 and the first dust filter hole 36, preventing dust particles from adhering to the filter hopper 32 and the first dust filter hole 36 and causing obstruction of smoke exhaust or dust particle discharge.

[0033] Example 3:

[0034] like Figure 1-3 As shown: The smoke exhaust assembly 6 includes a smoke exhaust pipe 61 fixedly installed in the middle of the side wall of the right baffle 42. A smoke exhaust pipe 62 is fixedly installed at the top of the smoke exhaust pipe 61. The smoke exhaust pipe 61 is connected to the smoke exhaust hole 521. The smoke filtered by the filter element 52 will enter the interior of the smoke exhaust hole 521, and then the smoke inside the smoke exhaust hole 521 will enter the interior of the smoke exhaust pipe 61, and finally be discharged into the air through the smoke exhaust pipe 62.

[0035] The working principle and usage process of this invention: When using the dust filtration device generated by waste incineration power generation, the motor 53 is first started to drive the filter cylinder 51 and the second gear ring 54 on its outer surface to rotate. Then, the second gear ring 54 drives the first gear ring 33 to rotate, which can drive the flue pipe 31 and the filter bucket 32 ​​to rotate synchronously. When the flue gas inside the chimney mechanism 1 rises, the flue gas inside the chimney mechanism 1 will be filtered for the first time by the first dust filter hole 36, and then enter the interior of the filter bucket 32. Then, the flue gas enters the interior of the three-way pipe 4 through the flue pipe 31. Then, the flue gas inside the three-way pipe 4 is filtered by the second dust filter hole 55 and then filtered again by the filter element 52. Then, the flue gas enters the interior of the exhaust hole 521, and then the flue gas inside the exhaust hole 521 enters the interior of the exhaust pipe 61. Finally, it is discharged into the air through the exhaust bucket 62. When the exhaust stops, the dust particles on the filter cylinder 51 will enter the interior of the filter bucket 32 ​​through the three-way pipe 4 and the exhaust pipe 31, and finally be discharged through the first dust filter hole 36.

[0036] When the filter hopper 32 rotates, it comes into contact with the cleaning filament 35. The cleaning filament 35 and the filter hopper 32 are positioned opposite each other, so that the larger dust particles on the filter hopper 32 and the first dust filter hole 36 can be cleaned by the cleaning filament 35. When the filter hopper 32 rotates, the dust particles attached to the filter hopper 32 will fly to the sides of the filter hopper 32 under the action of centrifugal force. When the filter cylinder 51 rotates, the smaller dust particles attached to the filter cylinder 51 and the second dust filter hole 55 will also fly to the sides of the filter cylinder 51, and then enter the interior of the filter hopper 32 through the three-way pipe 4 and the smoke outlet pipe 31, and finally be discharged through the first dust filter hole 36.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A dust filtration device for waste incineration power generation, comprising a chimney mechanism (1), wherein a fixed plate (2) is fixedly installed on the top surface of the chimney mechanism (1), and a smoke outlet (21) is provided in the middle of the top surface of the fixed plate (2). characterized in that A three-way pipe (4) connected to the smoke outlet (21) is fixedly installed in the middle of the top surface of the fixed plate (2). A first filter mechanism (3) is provided in the fixed plate (2). A second filter mechanism (5) is provided in the three-way pipe (4). A smoke exhaust assembly (6) is provided on the right side of the three-way pipe (4). The first filtration mechanism (3) includes a smoke outlet pipe (31) that is rotatably fitted inside the smoke outlet hole (21) via a bearing ring. A filter bucket (32) is fixedly installed on the bottom surface of the smoke outlet pipe (31). A first gear ring (33) is fixedly fitted on the top of the outer surface of the smoke outlet pipe (31). The bottom and side of the filter bucket (32) are provided with uniformly distributed first dust filter holes (36). A left baffle (41) and a right baffle (42) are fixedly installed at the left and right ends of the three-way pipe (4), respectively. The second filter mechanism (5) includes a filter cylinder (51) that is rotatably fitted inside the top of the three-way pipe (4) via a bearing ring. The arc surface of the filter cylinder (51) is provided with evenly distributed second dust filter holes (55). A second gear ring (54) that meshes with the first gear ring (33) is fixedly fitted on the outer surface of the filter cylinder (51). A motor (53) is fixedly installed in the middle of the side wall of the left baffle (41). The output end of the motor (53) is fixedly installed in the middle of the side wall of the filter cylinder (51) through the side wall of the left baffle (41). The filter cylinder (51) has an opening at its left end. The filter cylinder (51) is equipped with a filter element (52) inside. The filter element (52) is cylindrical. A smoke exhaust hole (521) is opened through the middle of the side of the filter element (52). The top end of the smoke outlet pipe (31) is inserted into the bottom end of the three-way pipe (4). The outer wall of the smoke outlet pipe (31) is in contact with the inner wall of the bottom end of the three-way pipe (4). The smoke exhaust assembly (6) includes a smoke exhaust pipe (61) fixedly installed in the middle of the side wall of the right baffle (42). A smoke exhaust hopper (62) is fixedly installed at the top end of the smoke exhaust pipe (61). The smoke exhaust pipe (61) is connected to the smoke exhaust hole (521).

2. The dust filtering device for dust generated by waste incineration power generation according to claim 1, characterized in that: The diameter of the first dust filter pore (36) is 300 μm, and the diameter of the second dust filter pore (55) is 100 μm.

3. The dust filtration device for waste incineration power generation according to claim 1, characterized in that: The inner layer of the filter element (52) is a stainless steel filter screen cylinder, and the outer layer of the filter element (52) is a fluoromethylene needle-punched felt, which is fixedly fitted on the outer surface of the stainless steel filter screen cylinder.

4. The dust filtration device for waste incineration power generation according to claim 1, characterized in that: The first filtration mechanism (3) further includes a U-shaped plate (34) fixedly installed on the bottom surface of the fixed plate (2). The outline of the U-shaped plate (34) matches the outline of the filter bucket (32). Cleaning filaments (35) are evenly distributed and fixedly installed on the side wall of the U-shaped plate (34) near the filter bucket (32).

5. The dust filtration device for waste incineration power generation according to claim 4, characterized in that: The cleaning filament (35) is in contact with the outer surface of the filter bucket (32), and the cleaning filament (35) corresponds to the position of the first dust filter hole (36). The cleaning filament (35) is made of steel wire.

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