An anti-blocking dust collector inlet flue dust cleaning device

Abstract

The present invention discloses an anti-blocking dust collector inlet flue dust cleaning device, which belongs to the field of flue dust cleaning and anti-blocking. The present invention adds a pair of ash conveying negative pressure pipes and sedimentation pipes between the dust collector and the ash hopper. Under the action of the negative pressure of the dust collector itself, the compressed air is introduced to maintain the smooth transportation of the smoke. Some ash particles with large particles and high density fall along the vertical direction of the ash conveying negative pressure pipe to the horizontally arranged sedimentation pipe during the transportation process, and are dropped into the dust collecting box by the sedimentation component for collection, thereby alleviating the problem of a large amount of dust accumulation at the dust collector inlet. At the same time, a cleaning component capable of scraping the inner wall of the pair of ash conveying negative pressure pipes is added to the inside of the pipes, so that the ash particles adhered to the inner wall of the ash conveying cavity are peeled off downwards. The peeled ash particles fall into the dust collecting box through the sedimentation component on the sedimentation pipe under the action of gravity, thereby realizing effective cleaning operation, so as to prevent a large amount of ash particles from being deposited on the inner wall of the ash conveying pipe and affecting the subsequent ash conveying operation.

Description

Technical Field

[0001] The present invention relates to the field of flue dust cleaning and anti-blocking, and more particularly to an anti-blocking type dust collector inlet flue dust cleaning device. Background Art

[0002] The ash conveying system of the economizer of a power plant boiler is an important component of the boiler. It has the characteristics of large ash particle size, high density and high gas consumption. These characteristics are particularly evident when the unit is under high load, the coal quality is poor, and the ash content is high. If it cannot operate normally, it will cause wear and blockage of the denitrification system and the air preheater, affecting the safe and economic operation of the unit.

[0003] At present, most domestic power plants collect large ash particles in the economizer ash hopper and transport them to the ash storage. The transportation distance is long and the pipeline is prone to wear and tear, especially at the elbows of the ash pipeline, which easily causes the deposition of ash particles. Long-term operation will cause serious blockage of the ash pipeline, resulting in increased resistance in the ash pipeline.

[0004] To this end, we proposed an anti-blocking dust collector inlet flue cleaning device. By connecting the economizer ash hopper with the dust collector inlet flue with a shorter ash conveying distance, and adding a cleaning structure between the dust collector inlet flue and the silo pump, the problem of large amounts of dust accumulation at the dust collector inlet is alleviated. Summary of the Invention

[0005] The dust collecting box of the present invention is a kind of dust collecting box of the present invention, and dust collecting box of the present invention is the dust collecting box of the present invention.

[0006] The object of the present invention can be achieved through the following technical solutions: an anti-blocking dust collector inlet flue dust cleaning device, comprising an ash conveying pipe group connected between the dust collector and the silo pump, the silo pump is fixedly connected to the bottom end of the ash hopper through the silo pump feed valve, the ash conveying pipe group comprises a pair of ash conveying negative pressure pipes, the pair of ash conveying negative pressure pipes extend vertically downward and are fixedly connected to the sedimentation pipe, the upper ends of the pair of ash conveying negative pressure pipes are respectively connected to the discharge pipe on the silo pump and the inlet flue on the dust collector, an air supply ring connected to the interior thereof is fixedly sleeved on the end wall of the discharge pipe, the outer end of the air supply ring is fixedly connected to the compressed air discharge pipe, a plurality of sedimentation components connected to the interior thereof are distributed on the bottom end wall of the sedimentation pipe, and a dust collecting box connected thereto is provided at the bottom end of the sedimentation component;

[0007] A pair of ash conveying negative pressure pipes are fixedly connected to the inside thereof with a diverter plate extending downward to the sedimentation pipe, the diverter plate divides the inside of the ash conveying negative pressure pipe into two ash conveying chambers, and a pair of ash conveying chambers is provided with a cleaning component movably connected to the upper and lower end walls of the diverter plate, the cleaning component includes an ash cleaning half-ring movably connected to the upper and lower end walls of the diverter plate, a pair of ash cleaning half-rings are movably sealed and connected to the inner walls of a pair of ash conveying chambers respectively, a pair of cleaning half-rings are fixedly connected to magnetic patches arranged to be magnetically attracted to each other at one end which is in contact with the diverter plate, and a pull rope 2 and a pull rope 1 are connected to the upper and lower end walls of the magnetic patch located above respectively, a lower end of a pair of pull ropes respectively penetrates the sedimentation pipe and extends downward, an upper end of a pair of pull ropes respectively penetrates the exhaust pipe and the inlet flue and extends downward, and a reel for winding up the pull ropes 1 and 2 is installed on the dust collecting box.

[0008] Furthermore, a pair of ash conveying negative pressure pipes and sedimentation pipes cooperate to form a U-shaped structure. The upper and lower end walls of the inner end of the air supply ring are fixedly connected to a guide channel connected to the ash conveying negative pressure pipe. A compressed air intake is installed on the discharge pipe to disturb the ash particles that are easily deposited on the pipe wall. This can loosen the accumulated ash particles and maintain smooth transportation of the ash.

[0009] Furthermore, the sedimentation assembly includes a guide flap fixedly embedded on the inner wall of the bottom end of the sedimentation tube, the bottom end of the guide flap is fixedly connected to a drop hopper connected to the dust collecting box, and the bottom end wall of the sedimentation tube is provided with a drop cavity matching the guide flap.

[0010] Furthermore, multiple guide flaps are arranged adjacent to each other at a short distance. The guide flaps are elliptical structures that are embedded with the bottom end wall of the sedimentation tube, and the guide flaps and the sedimentation tube are connected by a magnetic suction setting. When not in operation, it is convenient to remove the sedimentation assembly from the sedimentation tube, so as to facilitate the cleaning of the guide flaps, the drop hopper and the inner wall of the sedimentation tube.

[0011] Optionally, the cleaning half ring includes a half ring body fixedly connected to the magnetic patch, and the outer wall of the half ring body is covered with a cleaning pad that is squeezed and connected to the inner wall of the ash conveying cavity.

[0012] Optionally, the cleaning pad is made of elastic material, and a plurality of cleaning protrusions are distributed on the outer wall of the cleaning pad. The cleaning half ring has a certain cushioning property under the premise of having a certain mechanical strength, so that the cleaning half ring can adapt to the smooth movement of the inner wall of the ash conveying cavity when moving along the inner wall of the ash conveying cavity, and the cleaning pad with cushioning performance protects the inner wall of the ash conveying negative pressure pipe while playing the role of wiping ash particles, and is not easy to cause wear to the inner wall of the ash conveying negative pressure pipe.

[0013] Optionally, a magnetic conductive layer is embedded in the inner wall of the diverter plate, and the end surface of the diverter plate in contact with the magnetic patch is polished to obtain a smooth surface, which is conducive to the smooth movement of a pair of magnetic patches along the upper and lower end walls of the diverter plate under the traction of pull ropes one and two. At the same time, the upper and lower end walls of the diverter plate are smooth and not easily adhered to by dust particles.

[0014] Optionally, the winder includes a winding shell, in which a winding roller is rotatably installed, and a motor for driving the winding roller is fixedly installed on the rear end wall of the winding shell, and pull rope 1 and pull rope 2 are respectively wound around the front and rear ends of the winding roller in opposite directions.

[0015] Optionally, the air outlet ends of a pair of guide channels are respectively arranged opposite to the upper ports of the two ash conveying chambers.

[0016] The method for using the anti-blocking dust collector inlet flue dust cleaning device comprises the following steps:

[0017] Step 1: First, the dust cleaning device is fixedly installed between the dust collector and the ash hopper. The smoke ash is transported to the dust collector through the discharge pipe and the ash conveying pipe group. During this transportation process, some large and dense ash particles fall vertically along the ash conveying negative pressure pipe to the horizontally arranged sedimentation pipe, and then fall into the dust collection box through multiple connected sedimentation components for collection, thus alleviating the problem of large amounts of ash accumulation at the dust collector inlet.

[0018] Step 2: During the ash conveying process, compressed air is introduced into the discharge pipe through the cooperation of the compressed air discharge pipe and the air supply ring. The compressed air moves with the ash and, under the action of the negative pressure of the dust collector itself, disturbs the ash particles deposited on the pipe wall, loosens the accumulated ash particles, and ensures smooth ash conveying.

[0019] Step 3. After the ash conveying work is completed, the pull rope 1 is reeled and pulled by the reel. The pull rope 1 drives a pair of cleaning semi-rings to move downward along the inner walls of a pair of ash conveying chambers, and the ash particles adhering to the inner walls of the ash conveying chambers are peeled off downward. The peeled ash particles fall into the dust collecting box through the sedimentation assembly on the sedimentation pipe under the action of gravity, realizing effective cleaning operation to prevent a large amount of ash particles from being deposited on the inner wall of the ash conveying pipe and affecting the subsequent ash conveying operation.

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] (1) This scheme is to add a pair of ash conveying negative pressure pipes and sedimentation pipes between the dust collector and the ash hopper. During the ash conveying process, the compressed air introduced under the action of the negative pressure of the dust collector itself is used to maintain the smooth conveying of the smoke ash. Some ash particles with large particles and high density fall vertically along the ash conveying negative pressure pipe to the horizontally arranged sedimentation pipe during the conveying process, and are collected by the sedimentation component in the dust collecting box, thereby alleviating the problem of a large amount of dust accumulation at the dust collector entrance. At the same time, a cleaning component capable of scraping the inner wall of the ash conveying negative pressure pipe is added inside the pair of ash conveying negative pressure pipes. The pull rope is reeled and pulled by the reel, and the pull rope drives the cleaning half ring to move downward along the inner wall of the ash conveying cavity, peeling off the ash particles adhering to the inner wall of the ash conveying cavity. The peeled ash particles also fall into the dust collecting box under the action of gravity, thereby achieving effective cleaning operation, so as to prevent a large amount of ash particles from accumulating in the flue at the dust collector entrance and affecting the subsequent ash conveying operation.

[0022] (2) The sedimentation assembly in this scheme includes a guide flap fixedly embedded on the inner wall of the bottom end of the sedimentation tube, and the bottom end of the guide flap is fixedly connected to a drop hopper connected to the dust collecting box. The bottom end wall of the sedimentation tube is provided with a drop cavity matching the guide flap. Multiple guide flaps are arranged adjacent to each other at a short distance. The guide flap is a circular elliptical structure embedded in the bottom end wall of the sedimentation tube, and the guide flap and the sedimentation tube are connected by a magnetic suction setting. When not in use, it is convenient to detach the sedimentation assembly from the sedimentation tube to facilitate the cleaning of the guide flap, the drop hopper and the inner wall of the sedimentation tube.

[0023] (3) The cleaning half ring in this scheme includes a half ring body fixedly connected to the magnetic patch. The outer wall of the half ring body is covered with a cleaning pad that is squeezed and connected with the inner wall of the ash conveying cavity. The cleaning pad is made of elastic material, and a plurality of cleaning protrusions are distributed on the outer wall of the cleaning pad. The cleaning half ring has a certain buffering property on the premise of having a certain mechanical strength, so that when the cleaning half ring moves along the inner wall of the ash conveying cavity, it can adapt to the smooth movement of the inner wall of the ash conveying cavity, and the cleaning pad with buffering performance protects the inner wall of the ash conveying negative pressure pipe while playing the role of wiping ash particles, and is not easy to cause wear to the inner wall of the ash conveying negative pressure pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 This is a schematic structural diagram of a pair of ash conveying negative pressure pipes and a settling pipe when they are detached;

[0026] Figure 3 It is a structural schematic diagram of the settling pipe and the settling assembly of the present invention when they are detached;

[0027] Figure 4 This is a structural diagram of the junction of the ash conveying negative pressure pipe and the reel of the present invention;

[0028] Figure 5 is a cross-sectional view of the present invention;

[0029] Figure 6 for Figure 5 Schematic diagram of the structure at A in FIG;

[0030] Figure 7 The structure diagram of the junction between the diverter plate and the dust cleaning component of the present invention is shown in FIG. Figure 1 ;

[0031] Figure 8 The structure diagram of the junction between the diverter plate and the dust cleaning component of the present invention is shown in FIG. Figure 2 ;

[0032] Figure 9 It is a schematic diagram of the structure of the present invention when it is working;

[0033] Figure 10 It is a schematic structural diagram of the present invention when using the dust cleaning component for dust cleaning.

[0034] Description of the numbers in the figure:

[0035] 1. Dust collector; 2. Ash hopper; 3. Silo pump; 4. Ash conveying negative pressure pipe; 5. Sedimentation pipe; 6. Discharge pipe; 7. Inlet flue; 8. Air supply ring; 9. Compressed air discharge pipe; 10. Diversion channel; 11. Material guide flap; 12. Drop hopper; 13. Dust collection box; 14. Diverter; 15. Ash cleaning half ring; 16. Magnetic patch; 17. Pull rope 1; 18. Pull rope 2; 19. Reel. DETAILED DESCRIPTION

[0036] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention 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, not all the embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work based on the embodiments of the present invention shall fall within the scope of protection of the present invention.

[0037] Example 1:

[0038] The present invention discloses an anti-blocking dust collector inlet flue dust cleaning device, please refer to Figure 1 , including an ash conveying pipe group connected between the dust collector 1 and the silo pump 3. The silo pump 3 is fixedly connected to the bottom end of the ash hopper 2 through the silo pump feed valve. An expansion joint is also connected between the silo pump feed valve and the ash hopper 2 outlet. The silo pump 3 is installed by hoisting at the bottom end of the ash hopper 2. At the same time, the silo pump 3 adopts a small-volume ash conveying pump, which is hoisted under the economizer ash hopper to save installation space and facilitate operation and maintenance.

[0039] See also Figure 1-Figure 2The ash conveying pipe group includes a pair of ash conveying negative pressure pipes 4, a pair of ash conveying negative pressure pipes 4 extend vertically downward and are fixedly connected to the sedimentation pipe 5, the upper ends of the pair of ash conveying negative pressure pipes 4 are respectively connected to the discharge pipe 6 on the silo pump 3 and the inlet flue 7 on the dust collector 1, and the end wall of the discharge pipe 6 is fixedly sleeved with an air supply ring 8 connected to the interior thereof, and the outer end of the air supply ring 8 is fixedly connected to the compressed air discharge pipe 9, and a plurality of sedimentation components connected to the interior thereof are distributed on the bottom end wall of the sedimentation pipe 5, and a dust collecting box 13 connected to the bottom end of the sedimentation component is provided.

[0040] A pair of ash conveying negative pressure pipes 4 cooperate with the sedimentation pipe 5 to form a U-shaped structure. The upper and lower end walls of the inner end of the air supply ring 8 are fixedly connected to the guide channel 10 connected to the ash conveying negative pressure pipe 4. A compressed air intake is installed on the discharge pipe 6 to disturb the ash particles that are easily deposited on the pipe wall. This can loosen the ash particles accumulated on the pipe wall and maintain smooth transportation of the ash. The pair of ash conveying negative pressure pipes 4 are arranged vertically downward. Some ash particles with large particles and high density fall in the vertical direction during the transportation process, and then fall into the sedimentation assembly through the horizontally arranged sedimentation pipe 5, and are then collected by the dust box 13.

[0041] See also Figure 2-Figure 3 , wherein the sedimentation component includes a guide flap 11 fixedly embedded on the inner wall of the bottom end of the sedimentation tube 5, and the bottom end of the guide flap 11 is fixedly connected to a drop hopper 12 connected to the dust collecting box 13. The bottom end wall of the sedimentation tube 5 is provided with a drop cavity matching the guide flap 11, and multiple guide flaps 11 are arranged adjacent to each other at a short distance. The guide flap 11 is a circular elliptical structure embedded in the bottom end wall of the sedimentation tube 5, and the guide flap 11 and the sedimentation tube 5 are connected by a magnetic suction setting. When not working, it is convenient to detach the sedimentation component from the sedimentation tube 5, so as to facilitate the cleaning of the guide flap 11, the drop hopper 12 and the inner wall of the sedimentation tube 5, and multiple guide flaps 11 are arranged adjacent to each other at a short distance to prevent large and dense ash particles from being deposited in the horizontal part of the sedimentation tube 5 and being difficult to handle.

[0042] See also Figure 4-10, a pair of ash conveying negative pressure pipes 4 are fixedly connected with a diverter piece 14 extending downward to the sedimentation pipe 5, the diverter piece 14 divides the inside of the ash conveying negative pressure pipe 4 into two ash conveying chambers, and the air outlet ends of a pair of guide channels 10 are respectively arranged relative to the upper port positions of the two ash conveying chambers, dividing them into two ash conveying chambers and cooperating with the two guide channels to relieve the ash conveying resistance. A ash cleaning component is provided between the pair of ash conveying chambers, which is movably connected to the upper and lower end walls of the diverter piece 14. The ash cleaning component includes an ash cleaning half ring 15 movably connected to the upper and lower end walls of the diverter piece 14. A pair of ash cleaning half rings 15 are movably sealed with the inner walls of a pair of ash conveying chambers respectively. A pair of ash cleaning half rings 15 are fixedly connected to one end of the diverter piece 14 that is in contact with each other with magnetic patches 16, and the magnetic patch 16 located above The upper and lower end walls are respectively connected to a pull rope 2 18 and a pull rope 17. The lower ends of a pair of pull ropes 2 18 respectively penetrate the sedimentation pipe 5 and extend downward, and the upper ends of a pair of pull ropes 17 respectively penetrate the exhaust pipe 6 and the inlet flue 7 and extend downward. A reel 19 for winding and winding the pull rope 17 and the pull rope 2 18 is installed on the dust box 13. The reel 19 is used to reel and pull the pull rope 17. The pull rope 17 is driven by the pull rope 17 to move downward along the inner walls of a pair of ash conveying cavities, and the ash particles adhered to the inner walls of the ash conveying cavities are peeled off downward. The peeled ash particles fall into the dust box 13 through the sedimentation assembly on the sedimentation pipe 5 under the action of gravity, thereby realizing effective cleaning operation to prevent a large amount of ash particles from being deposited on the inner wall of the ash conveying pipe and affecting the subsequent ash conveying operation.

[0043] Example 2;

[0044] Based on the dust collector 1 of the embodiment, this embodiment further optimizes the design of the cleaning half ring 15 structure on the cleaning component, and cooperates with the magnetic patch 16 that can move synchronously up and down to achieve the synchronous movement of the upper and lower pairs of cleaning half rings 15 along the end wall of the diverter plate 14. Therefore, only a set of pull rope 17 and pull rope 2 18 needs to be designed to drive a pair of cleaning half rings 15 to clean and peel off the inner walls of the two ash conveying chambers respectively.

[0045] See also Figure 7-10 Specifically, the cleaning half ring 15 includes a half ring body fixedly connected to the magnetic patch 16, and the outer wall of the semi-ring body is covered with a cleaning pad that is squeezed and connected with the inner wall of the ash conveying cavity. The cleaning pad is made of elastic material, and a plurality of cleaning protrusions are distributed on the outer wall of the cleaning pad. The cleaning half ring 15 has a certain buffering property on the premise of having a certain mechanical strength, so that the cleaning half ring 15 can adapt to the smooth movement of the inner wall of the ash conveying cavity when moving along the inner wall of the ash conveying cavity, and the cleaning pad with buffering performance protects the inner wall of the ash conveying negative pressure pipe 4 while playing the role of wiping ash particles, and is not easy to cause wear to the inner wall of the ash conveying negative pressure pipe 4.

[0046] A magnetic conductive layer is embedded in the inner wall of the diverter plate 14, and the end surface of the diverter plate 14 in contact with the magnetic patch 16 is polished to obtain a smooth surface, which is conducive to the smooth movement of a pair of magnetic patches 16 along the upper and lower end walls of the diverter plate 14 under the traction of pull rope 17 and pull rope 2 18. At the same time, the upper and lower end walls of the diverter plate 14 are smooth and not easily adhered to by dust particles.

[0047] The winder 19 includes a winding shell, in which a winding roller is rotatably installed, and a motor for driving the winding roller is fixedly installed on the rear end wall of the winding shell. The pull rope 17 and the pull rope 2 18 are respectively wound around the front and rear ends of the winding roller in opposite directions. By rotating the winding roller, the pull rope 17 and the pull rope 2 18 are pulled in the same direction. For example, when the pull rope 17 is wound, the pull rope 17 moves downward to pull the cleaning half ring 15 downward along the inner wall of the ash conveying chamber. At this time, the pull rope 2 18 is in the unwinding mode, and the pull rope 2 18 moves synchronously with the pull rope 17. On the contrary, after the motor is driven in reverse, the pull rope 2 18 is in the winding mode and the pull rope 17 is in the unwinding mode, so as to pull the cleaning half ring 15 upward along the ash conveying chamber to restore it to its initial state.

[0048] In combination with Example 1 and Example 2, the method for using the dust collector inlet flue dust cleaning device in this solution includes the following steps:

[0049] Step 1: First, the dust cleaning device is fixedly installed between the dust collector 1 and the ash hopper 2. The smoke ash is transported into the dust collector 1 through the discharge pipe 6 and the ash conveying pipe group. During this transportation process, some large and dense ash particles fall vertically along the ash conveying negative pressure pipe 4 to the horizontally arranged sedimentation pipe 5, and then fall into the dust collecting box 13 through multiple connected sedimentation components for collection, thereby alleviating the problem of large amounts of ash accumulation at the dust collector inlet;

[0050] Step 2: During the ash conveying process, compressed air is introduced into the discharge pipe 6 through the compressed air discharge pipe 9 in cooperation with the air supply ring 8. The compressed air moves along with the ash and, under the action of the negative pressure of the dust collector 1 itself, disturbs the ash particles deposited on the pipe wall, loosens the accumulated ash particles, and ensures smooth ash conveying.

[0051] Step three: after the ash conveying work is completed, the pull rope 17 is reeled and pulled by the reel-up 19, and the pull rope 17 drives a pair of cleaning semi-rings 15 to move downward along the inner walls of a pair of ash conveying cavities, and the ash particles adhering to the inner walls of the ash conveying cavities are peeled off downward. The peeled ash particles fall into the dust collecting box 13 through the sedimentation assembly on the sedimentation pipe 5 under the action of gravity, realizing effective cleaning operation, so as to prevent a large amount of ash particles from being deposited on the inner wall of the ash conveying pipe and affecting the subsequent ash conveying operation.

[0052] This solution adds an ash cleaning device between the dust collector 1 and the ash hopper 2. The ash cleaning device consists of a pair of ash conveying negative pressure pipes 4 and a sedimentation pipe 5 and other components. During the ash conveying process, the compressed air introduced under the action of the negative pressure of the dust collector 1 itself is used to maintain the smooth transportation of the ash. Some ash particles with large particles and high density fall vertically along the ash conveying negative pressure pipe 4 to the horizontally arranged sedimentation pipe 5 during the transportation process. Regardless of whether the ash moves downward or upward along the ash conveying negative pressure pipe 4, it can be deposited in the horizontally arranged sedimentation pipe 5 along the vertical direction of the ash conveying negative pressure pipe 4 under the action of gravity and resistance, and fall into the dust collecting box 13 for collection by multiple connected sedimentation components, thereby alleviating the problem of large amounts of ash accumulation at the dust collector inlet.

[0053] At the same time, a cleaning component that can scrape the inner wall of the ash conveying negative pressure pipe 4 is added inside a pair of ash conveying negative pressure pipes 4. The pull rope 17 is reeled and pulled by the reel 19, and the pull rope 17 drives a pair of cleaning semi-rings 15 to move downward along the inner wall of a pair of ash conveying cavities, and the ash particles adhering to the inner wall of the ash conveying cavity are peeled off downward. The peeled ash particles fall into the dust collecting box 13 through the sedimentation component on the sedimentation pipe 5 under the action of gravity, realizing effective cleaning operation, so as to prevent a large amount of ash particles from being deposited on the inner wall of the ash conveying pipe and affecting the subsequent ash conveying operation.

[0054] Here, it should be added that the ash conveying scheme should adopt a "small amount and multiple times" conveying mode, by shortening the ash conveying time to control and reduce the ash conveying amount each time, and multiple-frequency conveying instead of level meter control, so that the small amount of fly ash conveyed to the inlet flue can be smoothly carried to the electrostatic precipitator area by the flue gas.

[0055] The above description is only a preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto; any technician familiar with the technical field within the technical scope disclosed by the present invention; any equivalent replacement or change based on the technical solution and improved conception of the present invention shall be covered within the protection scope of the present invention.

Claims

1. An anti-blocking dust collector inlet flue dust cleaning device, comprising an ash conveying pipe group connected between the dust collector (1) and a silo pump (3), wherein the silo pump (3) is fixedly connected to the bottom end of the ash hopper (2) through a silo pump feed valve, characterized in that: The ash conveying pipe group includes a pair of ash conveying negative pressure pipes (4), the pair of ash conveying negative pressure pipes (4) extend vertically downward and are fixedly connected to a sedimentation pipe (5), the upper ends of the pair of ash conveying negative pressure pipes (4) are respectively connected to the discharge pipe (6) on the silo pump (3) and the inlet flue (7) on the dust collector (1), the end wall of the discharge pipe (6) is fixedly provided with an air supply ring (8) connected to the interior thereof, the outer end of the air supply ring (8) is fixedly connected to a compressed air discharge pipe (9), the bottom end wall of the sedimentation pipe (5) is distributed with a plurality of sedimentation components connected to the interior thereof, and the bottom end of the sedimentation component is provided with a dust collecting box (13) connected thereto; A pair of the ash conveying negative pressure pipes (4) are fixedly connected to the inside thereof with a diverter plate (14) extending downward to the sedimentation pipe (5), the diverter plate (14) divides the inside of the ash conveying negative pressure pipe (4) into two ash conveying cavities, and a ash cleaning component movably connected to the upper and lower end walls of the diverter plate (14) is provided between the pair of ash conveying cavities, the ash cleaning component comprising a ash cleaning half ring (15) movably connected to the upper and lower end walls of the diverter plate (14), the pair of ash cleaning half rings (15) are movably sealed with the inner walls of the pair of ash conveying cavities, and the pair of the ash cleaning half rings (15) are respectively connected to the inner walls of the pair of ash conveying cavities. The ends of the sheets (14) that are in contact with each other are fixedly connected with magnetic patches (16) that are arranged to attract each other. The upper and lower end walls of the magnetic patch (16) located above are respectively connected with a pull rope 2 (18) and a pull rope 1 (17). The lower ends of a pair of pull ropes 1 (17) respectively pass through the sedimentation pipe (5) and extend downward. The upper ends of a pair of pull ropes 2 (18) respectively pass through the exhaust pipe (6) and the inlet flue (7) and extend downward. A reel (19) for reeling in and winding the pull ropes 1 (17) and 2 (18) is installed on the dust box (13).

2. The anti-blocking dust collector inlet flue dust cleaning device according to claim 1 is characterized in that: A pair of the ash conveying negative pressure pipes (4) cooperate with the sedimentation pipe (5) to form a U-shaped structure, and the upper and lower end walls of the inner end of the air supply ring (8) are fixedly connected to the guide channel (10) arranged in communication with the ash conveying negative pressure pipe (4).

3. The anti-blocking dust collector inlet flue dust cleaning device according to claim 2, characterized in that: The sedimentation assembly comprises a material guide flap (11) fixedly embedded in the inner wall of the bottom end of the sedimentation tube (5); the bottom end of the material guide flap (11) is fixedly connected to a drop hopper (12) connected to the dust collecting box (13); and the bottom end wall of the sedimentation tube (5) is provided with a drop cavity matching the material guide flap (11).

4. The anti-blocking dust collector inlet flue dust cleaning device according to claim 3 is characterized by: The plurality of guide flaps (11) are arranged adjacent to each other at a short distance, and the guide flaps (11) are oval structures that are embedded with the bottom end wall of the sedimentation tube (5), and the guide flaps (11) and the sedimentation tube (5) are connected by a magnetic attraction arrangement.

5. The anti-blocking dust collector inlet flue dust cleaning device according to claim 1 is characterized in that: The ash cleaning half ring (15) comprises a half ring body fixedly connected to the magnetic patch (16), and the outer wall of the half ring body is covered with a ash cleaning pad that is squeezed and connected to the inner wall of the ash conveying cavity.

6. The anti-blocking dust collector inlet flue dust cleaning device according to claim 5, characterized in that: The dust cleaning pad is made of elastic material, and a plurality of dust cleaning protrusions are distributed on the outer wall of the dust cleaning pad.

7. The anti-blocking dust collector inlet flue dust cleaning device according to claim 1, characterized in that: A magnetic conductive layer is embedded in the inner wall of the shunt piece (14), and the end surface of the shunt piece (14) in contact with the magnetic patch piece (16) is polished to obtain a smooth surface.

8. The anti-blocking dust collector inlet flue dust cleaning device according to claim 1, characterized in that: The reel (19) includes a reel shell, a reel roller is rotatably mounted in the reel shell, a motor for driving the reel roller is fixedly mounted on the rear end wall of the reel shell, and the pull rope 1 (17) and the pull rope 2 (18) are respectively reeled in opposite directions and wound around the front and rear ends of the reel roller.

9. The anti-blocking dust collector inlet flue dust cleaning device according to claim 2, characterized in that: The gas outlet ends of a pair of the guide channels (10) are respectively arranged opposite to the upper ports of the two ash conveying chambers.

10. The method for using the anti-blocking dust collector inlet flue dust cleaning device according to claim 1, characterized in that: The following steps are involved: Step 1: First, the dust cleaning device is fixedly installed between the dust collector (1) and the ash hopper (2), and the smoke ash is transported to the dust collector (1) through the discharge pipe (6) and the ash conveying pipe group. During the transportation process, some ash particles with large particles and high density fall vertically along the ash conveying negative pressure pipe (4) to the horizontally arranged sedimentation pipe (5), and then fall into the dust collecting box (13) for collection by multiple connected sedimentation components, thereby alleviating the problem of large amounts of dust accumulation at the dust collector inlet; Step 2: During the ash conveying process, compressed air is introduced into the discharge pipe (6) through the cooperation of the compressed air discharge pipe (9) and the air supply ring (8). The compressed air moves along with the ash and, under the action of the negative pressure of the dust collector (1), disturbs the ash particles deposited on the pipe wall, loosens the accumulated ash particles, and maintains smooth conveying of the ash. Step 3: After the ash conveying work is completed, the pull rope 1 (17) is reeled and pulled by the reel (19), and the pull rope 1 (17) drives a pair of ash cleaning semi-rings (15) to move downward along the inner walls of a pair of ash conveying chambers, peeling off the ash particles adhering to the inner walls of the ash conveying chambers. The peeled ash particles fall into the dust collecting box (13) through the sedimentation assembly on the sedimentation pipe (5) under the action of gravity, thereby achieving an effective ash cleaning operation to prevent a large amount of ash particles from being deposited on the inner wall of the ash conveying pipe and affecting the subsequent ash conveying operation.

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