Ceramic filter tube dust collector with preheating mechanism

Abstract

The application discloses a ceramic filter tube dust collector with a preheating mechanism, which comprises a shell and a controller, an upper insulating plate and a lower insulating plate are arranged at the upper end and the lower part of the shell respectively, the shell is sequentially divided into a clean gas chamber, a filter chamber and an ash collecting chamber from top to bottom by the upper insulating plate and the lower insulating plate, a plurality of rows of filter tube units are arranged in the filter chamber, each row of filter tube units comprises a plurality of filter tubes, a hot flue gas inlet is arranged on one side of the upper part of the filter chamber, and a preheating mechanism and an ash cleaning mechanism are arranged in the shell; the preheating mechanism comprises a plurality of rows of preheating groups which are installed at intervals from top to bottom, and each preheating group comprises a plurality of annular preheating plates which are internally provided with cavities. The ceramic filter tube dust collector with the preheating mechanism can preheat the ceramic filter tube by using the heat of high-temperature flue gas, deformation of the filter tube caused by rapid temperature rise is avoided, and cost investment and power consumption during operation are greatly reduced.

Description

Technical Field

[0001] This invention belongs to the field of dust collector technology, specifically relating to a ceramic filter tube dust collector with a preheating mechanism. Background Technology

[0002] Ceramic filter tube dust collectors are a common type of air purification equipment used to remove dust and other particulate matter from gas streams. Ceramic filter tubes are made from a common ceramic material with high porosity and a high specific surface area, thus enabling them to effectively adsorb particulate matter.

[0003] Before initial operation, ceramic tube dust collectors require slow preheating of the filter tubes to prevent excessive deformation due to thermal stress caused by rapid heating. Current methods use a preheating fan to circulate air through an electric heater, which requires a circulating fan and a high-power electric heater, resulting in high hardware costs and significant energy consumption during operation. Traditional ceramic tube dust collectors also suffer from several problems: the filter tubes are prone to clogging, requiring manual cleaning or periodic replacement, which is labor-intensive and costly. Therefore, it is necessary to research a ceramic tube dust collector with a preheating mechanism. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a ceramic filter tube dust collector with a preheating mechanism. This mechanism utilizes the heat from high-temperature flue gas to preheat the ceramic filter tube, preventing excessively rapid heating that could lead to filter tube deformation and significantly reducing cost and power consumption.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A ceramic filter tube dust collector with a preheating mechanism includes a housing and a controller. An upper insulating plate and a lower insulating plate are respectively installed at the upper and lower parts of the housing, dividing the interior of the housing into a clean air chamber, a filtration chamber, and a dust collection chamber from top to bottom. Multiple rows of filter tube units are installed in the filtration chamber, each row including multiple filter tubes. A hot flue gas inlet is located on one side of the upper part of the filtration chamber. A preheating mechanism and a dust removal mechanism are installed inside the housing. The preheating mechanism includes components installed at equal intervals from top to bottom. The preheating unit consists of multiple annular preheating plates with internal cavities. The cavities of two adjacent annular preheating plates are connected by a first connecting pipe, and two adjacent rows of preheating units are connected by a second connecting pipe. One end of the uppermost preheating unit is connected to the hot flue gas inlet, and one end of the lowermost preheating unit is connected to the air supply pipeline. The air supply pipeline passes through the lower insulating plate and extends into the ash collection chamber. The annular preheating plates have openings in the middle for filter tubes to pass through. The filter tubes pass through multiple annular preheating plates from top to bottom.

[0006] Preferably, the bottom opening of the aforementioned filter tube is closed at the top, and its top and bottom are respectively installed on the upper insulating plate and the lower insulating plate. The lower insulating plate is provided with multiple air inlets that communicate with the bottom opening of the filter tube, and the upper insulating plate is provided with multiple air outlets.

[0007] Preferably, there are multiple aforementioned dust removal mechanisms, which are arranged between two adjacent rows of filter tube units. The mechanism includes a crossbar, a tapping assembly, and a sliding assembly. The tapping assembly includes multiple T-shaped rods, with a front tapping plate and a rear tapping plate fixed at the top ends of the T-shaped rods, and its bottom is vertically fixed to the top of the crossbar.

[0008] Preferably, the aforementioned sliding assembly includes multiple slide rail units connected in sequence and a pair of sliders. The pair of sliders are respectively fixedly connected to both ends of the crossbar. The slide rail units are fixedly disposed on the inner side wall of the housing and include a front arc-shaped slide rail, a horizontal slide rail, a rear arc-shaped slide rail, and a vertical slide rail connected in sequence. The vertical slide rail is located between two adjacent annular preheating plates. The slider is driven by a sliding motor, which drives the slider to slide on the multiple slide rail units to drive the tapping assembly to move up and down. When the tapping assembly moves to the front end of the front arc-shaped slide rail, the front tapping plate is close to the side wall of the front row of filter tubes. When the tapping assembly moves to the rear end of the rear arc-shaped slide rail, the rear tapping plate is close to the side wall of the rear row of filter tubes to achieve tapping of the two rows of filter tubes.

[0009] Preferably, the diameter of the aforementioned opening is larger than the diameter of the filter tube, and a fastening assembly is provided above each row of preheating units. The fastening assembly includes multiple rows of fastening rods located behind the filter tube unit and moving rods that are respectively fixedly connected to the two ends of the fastening rods.

[0010] Preferably, the front end of the aforementioned movable rod is connected to a drive cylinder fixed to the inner wall of the housing via a telescopic rod. The drive cylinder drives the telescopic rod to extend and retract, thereby causing the fastening assembly to move back and forth.

[0011] Preferably, the front end of the aforementioned fastening rod is provided with multiple arc-shaped grooves corresponding to the filter tube.

[0012] Preferably, the top of the aforementioned clean air chamber is provided with an exhaust port, and the bottom of the ash collection chamber is provided with an ash outlet.

[0013] The advantages of this invention are: (1) The present invention introduces high-temperature flue gas into multiple annular preheating plates and uses the heat of the high-temperature flue gas to preheat the ceramic filter tube, avoiding the filter tube deformation caused by excessively rapid heating, and does not require additional preheating fans and electric heaters, which greatly reduces cost investment and power consumption during operation. (2) The annular preheating plate in this invention can not only pass in high-temperature flue gas for preheating, but also fix the filter tube to prevent the filter tube from deforming when the tapping component taps the filter tube; the filter tube can be further fixed by the fastening rod to prevent the filter tube from shaking during tapping and causing the installation position of the filter tube to loosen, so as to ensure the dust removal effect of the flue gas. (3) The present invention uses a tapping component to tap the filter tube from top to bottom, which can knock off the particles attached to the inner wall of the filter tube, effectively prevent the filter tube from becoming clogged, extend the service life of the filter tube, and reduce the workload and cost of cleaning the filter tube. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the dust removal mechanism in this invention; Figure 3 This is a top view of the dust removal mechanism in this invention.

[0015] Figure 4 This is a schematic diagram of the fastening component in this invention.

[0016] The meanings of the reference numerals in the diagram are as follows: 1. Shell, 1.1. Hot flue gas inlet, 1.2. Exhaust port, 1.3. Ash outlet, 2. Upper insulating plate, 2.1. Air outlet, 3. Lower insulating plate, 3.1. Air inlet, 4. Clean air chamber, 5. Filter chamber, 6. Ash collection chamber, 7. Filter tube, 8. Annular preheating plate, 8.1. Through port, 9. First connecting pipe, 10. Second connecting pipe, 11. Air supply pipeline, 12. Crossbar, 13. T-shaped rod, 14. Front flap, 15. Rear flap, 16. Slide rail unit, 16.1. Front arc-shaped slide rail, 16.2. Horizontal slide rail, 16.3. Rear arc-shaped slide rail, 16.4. Vertical slide rail, 17. Fastening rod, 18. Moving rod, 19. Drive cylinder. Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0018] See Figure 1 A ceramic filter tube dust collector with a preheating mechanism includes a housing 1 and a controller. The upper end and lower part of the housing 1 are respectively provided with an upper insulating plate 2 and a lower insulating plate 3. The upper insulating plate 2 and the lower insulating plate 3 divide the interior of the housing 1 from top to bottom into a clean air chamber 4, a filter chamber 5 and a dust collection chamber 6. The filter chamber 5 is provided with multiple rows of filter tube units, each row of filter tube units includes multiple filter tubes 7. A hot flue gas inlet 1.1 is provided on one side of the upper part of the filter chamber 5. An exhaust port 1.2 is provided at the top of the clean air chamber 4. An ash outlet 1.3 is provided at the bottom of the dust collection chamber 6.

[0019] The housing 1 is equipped with a preheating mechanism and a dust removal mechanism. The preheating mechanism includes multiple rows of preheating groups installed at equal intervals from top to bottom. Each preheating group includes multiple annular preheating plates 8 with cavities inside. The cavities of two adjacent annular preheating plates 8 are connected by a first connecting pipe 9. The rows of preheating groups are connected by a second connecting pipe 10. One end of the uppermost preheating group is connected to the hot flue gas inlet 1.1, and one end of the lowermost preheating group is connected to the air supply pipe 11. The air supply pipe 11 passes through the lower insulating plate 3 and extends into the dust collection chamber 6. The annular preheating plate 8 has a through-hole 8.1 in the middle for the filter tube 7 to pass through. The filter tube 7 passes through multiple annular preheating plates 8 from top to bottom, and the front wall of the filter tube 7 is in close contact with the inner wall of the front end of the through-hole 8.1. High-temperature flue gas is passed into multiple annular preheating plates 8, and the heat of the high-temperature flue gas is used to preheat the ceramic filter tube 7, which avoids the filter tube 7 from deforming due to excessive heating. It also eliminates the need for additional preheating fans and electric heaters, greatly reducing cost and power consumption.

[0020] The filter tube 7 has an open bottom and a closed top. Its top and bottom are respectively mounted on the upper insulating plate 2 and the lower insulating plate 3. The lower insulating plate 3 is provided with multiple air inlets 3.1 that communicate with the bottom opening of the filter tube 7, and the upper insulating plate 2 is provided with multiple air outlets 2.1. High-temperature flue gas enters multiple annular preheating plates 8 sequentially through the hot flue gas inlet 1.1, and then is sent into the ash collection chamber 6 through the air supply pipeline 11. It then enters the filter tube 7 through the multiple air inlets 3.1 on the lower insulating plate 3 for filtration, and the filtered gas is discharged through the air outlets 2.1 on the upper insulating plate 2.

[0021] participate Figure 2 and Figure 3 The dust removal mechanism comprises multiple components positioned between adjacent rows of filter tube units. It includes a crossbar 12, a tapping assembly, and a sliding assembly. The tapping assembly consists of multiple T-shaped rods 13, with a front tapping plate 14 and a rear tapping plate 15 fixed to the top ends of each rod, and its bottom vertically fixed to the top of the crossbar 12. The sliding assembly includes multiple sequentially connected slide rail units 16 and a pair of sliders. The pair of sliders are fixedly connected to both ends of the crossbar 12. The slide rail units 16 are fixedly mounted on the inner wall of the housing 1, and multiple corresponding slide rail unit groups are installed on the inner walls of both sides of the housing 1. The slide rail unit 16 includes a front arc-shaped slide rail 16.1, a horizontal slide rail 16.2, a rear arc-shaped slide rail 16.3, and a vertical slide rail 16.4, all connected in sequence. The slider is connected to a sliding motor, which drives the slider to slide on multiple slide rail units 16 to drive the tapping assembly to move up and down. When the tapping assembly moves to the front end of the front arc slide rail 16.1, the front tapping plate 14 is close to the side wall of the front row of filter tubes 7. When the tapping assembly moves to the rear end of the rear arc slide rail 16.3, the rear tapping plate 15 is close to the side wall of the rear row of filter tubes 7 to achieve tapping of the two rows of filter tubes 7.

[0022] The vertical slide rail 16.4 is located between two adjacent annular preheating plates 8, which can avoid affecting the tapping component passing between the two annular preheating plates 8.

[0023] See Figure 4 The diameter of the inlet is larger than the diameter of the filter tube 7. When the filter tube 7 is tapped, it will shake. Prolonged shaking can cause the filter tube 7 to loosen at the mounting points with the upper insulating plate 2 and the lower insulating plate 3, potentially leading to air leakage and affecting the dust removal effect. Therefore, a fastening assembly is installed above each row of preheating units. The fastening assembly includes multiple rows of fastening rods 17 located behind the filter tube unit and moving rods 18 that are fixedly connected to both ends of the fastening rods 17. The front end of the moving rod 18 is connected to a drive cylinder 19 fixed to the inner wall of the housing 1 via a telescopic rod. The drive cylinder 19 drives the telescopic rod to extend and retract, thereby moving the fastening assembly back and forth. When the fastening rod 17 moves forward to fit tightly against the outer wall of the filter tube 7, it can fix the filter tube 7 and prevent it from shaking. The front end of the fastening rod 17 is provided with multiple arc-shaped grooves corresponding to the filter tube 7, which can better fix the filter tube 7 and prevent it from deforming or breaking.

[0024] Both the sliding motor and the drive cylinder 19 are connected to the controller via wires, which facilitates the control of the dust removal mechanism and the fastening components.

[0025] To better illustrate the present invention, its working process is described in detail below: During operation, high-temperature flue gas is first introduced into the hot flue gas inlet 1.1. The high-temperature flue gas enters multiple annular preheating plates 8 through the hot flue gas inlet 1.1, and then is sent into the dust collection chamber 6 through the air supply pipeline 11. It then enters the filter tube 7 through multiple air inlets 3.1 on the lower insulating plate 3 for filtration. The filtered gas is discharged through the air outlet 2.1 on the upper insulating plate 2, thus completing the dust removal work.

[0026] After a period of operation, the filter tubes 7 need to be cleaned. First, turn on the sliding motor. The tapping component moves along the slider on the slide rail unit 16. When it moves to the front end of the front arc slide rail 16.1, the front tapping plate 14 presses against the side wall of the front row of filter tubes 7 and taps the front row of filter tubes 7. When the tapping component continues to move to the rear end of the rear arc slide rail 16.3, the rear tapping plate 15 presses against the side wall of the rear row of filter tubes 7 and taps the rear row of filter tubes 7. The front tapping plate 14 and the rear tapping plate 15 tap the adjacent two rows of filter tubes 7 from top to bottom, thus completing the cleaning of the filter tubes 7.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A ceramic filter tube dust collector with a preheating mechanism, comprising a housing (1) and a controller, wherein an upper insulating plate (2) and a lower insulating plate (3) are respectively provided at the upper and lower parts of the interior of the housing (1), the upper insulating plate (2) and the lower insulating plate (3) dividing the interior of the housing (1) from top to bottom into a clean air chamber (4), a filtration chamber (5) and a dust collection chamber (6), wherein multiple rows of filter tube units are provided in the filtration chamber (5), each row of filter tube units includes multiple filter tubes (7), and a hot flue gas inlet (1.1) is provided on one side of the upper part of the filtration chamber (5), characterized in that, The housing (1) is equipped with a preheating mechanism and a dust removal mechanism. The preheating mechanism includes multiple rows of preheating groups installed at equal intervals from top to bottom. Each preheating group includes multiple annular preheating plates (8) with cavities inside. The cavities of two adjacent annular preheating plates (8) are connected by a first connecting pipe (9). Two adjacent rows of preheating groups are connected by a second connecting pipe (10). One end of the uppermost preheating group is connected to the hot flue gas inlet (1.1), and one end of the lowermost preheating group is connected to the air supply pipeline (11). The air supply pipeline (11) passes through the lower insulating plate (3) and extends into the dust collection chamber (6). The middle of the annular preheating plate (8) is provided with an opening for the filter tube (7) to pass through. The filter tube (7) passes through multiple annular preheating plates (8) from top to bottom. The cleaning mechanism has multiple components and is set between two adjacent rows of filter tubes (7) units. It includes a crossbar (12), a tapping component and a sliding component. The tapping component includes multiple T-shaped rods (13). The top two ends of the T-shaped rod (13) are respectively fixed with a front tapping plate (14) and a rear tapping plate (15), and its bottom is vertically fixed to the top of the crossbar (12). The sliding assembly includes multiple slide rail units (16) connected in sequence and a pair of sliders. The pair of sliders are respectively fixedly connected to both ends of the crossbar (12). The slide rail unit (16) is fixedly disposed on the inner side wall of the housing (1) and includes a front arc-shaped slide rail (16.1), a horizontal slide rail (16.2), a rear arc-shaped slide rail (16.3), and a vertical slide rail (16.4) connected in sequence. The vertical slide rail (16.4) is located between two adjacent annular preheating plates (8). Between them, the slider is connected to the sliding motor, which drives the slider to slide on multiple slide rail units (16) to drive the tapping assembly to move up and down. When the tapping assembly moves to the front end of the front arc slide rail (16.1), the front tapping plate (14) is close to the side wall of the front row of filter tubes (7). When the tapping assembly moves to the rear end of the rear arc slide rail (16.3), the rear tapping plate (15) is close to the side wall of the rear row of filter tubes (7) to realize the tapping of the two rows of filter tubes (7).

2. A ceramic filter tube dust collector with a preheating mechanism according to claim 1, characterized in that, The bottom opening of the filter tube (7) is closed at the top, and its top and bottom are respectively installed on the upper insulating plate (2) and the lower insulating plate (3). The lower insulating plate (3) is provided with multiple air inlets (3.1) that are connected to the bottom opening of the filter tube (7), and the upper insulating plate (2) is provided with multiple air outlets (2.1).

3. A ceramic filter tube dust collector with a preheating mechanism according to claim 1, characterized in that, The diameter of the opening is larger than the diameter of the filter tube (7). Each row of the preheating group is provided with a fastening assembly above it. The fastening assembly includes multiple rows of fastening rods (17) located behind the filter tube (7) unit and moving rods (18) that are fixedly connected to both ends of the fastening rods (17).

4. A ceramic filter tube dust collector with a preheating mechanism according to claim 3, characterized in that, The front end of the moving rod (18) is connected to the drive cylinder (19) fixed on the inner wall of the housing (1) via a telescopic rod. The drive cylinder (19) drives the telescopic rod to extend and retract, thereby driving the fastening assembly to move back and forth.

5. A ceramic filter tube dust collector with a preheating mechanism according to claim 3, characterized in that, The front end of the fastening rod (17) is provided with multiple arc-shaped grooves corresponding to the filter tube (7).

6. A ceramic filter tube dust collector with a preheating mechanism according to claim 1, characterized in that, The top of the clean air chamber (4) is provided with an exhaust port (1.2), and the bottom of the ash collection chamber (6) is provided with an ash outlet (1.3).

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