Power plant flue ash removal device

Abstract

The utility model discloses a power plant flue ash removal device, and relates to the technical field of power plant flue cleaning. The dust removal device comprises a flue pipe, dust removal windows are formed in the bottom of the flue pipe at equal intervals in the flue direction of the flue pipe, the bottom, below the dust removal windows, of the flue pipe is fixedly connected with a plugging plate through nuts, and a connecting stud is fixedly arranged at the top of the plugging plate. The nut is screwed off from the upper end of the screw rod, the plugging plate is taken out from the flue pipe, a worker can conveniently clean dust attached to the inner wall of the flue pipe through the dust cleaning window, dust in smoke can be blocked to a certain degree through the arranged dust blocking plate, a part of dust is made to impact and attach to the dust blocking plate, and the dust blocking plate is prevented from falling off. The filter screen can be prevented from being blocked too fast, then personnel are prevented from frequently cleaning the filter screen, the screw rod is rotated to drive the limiting frame to move out of the clamping groove in the position of the hook, the filter screen can be rapidly detached from the blocking plate to be cleaned, and operation is convenient and fast.

Description

Technical Field

[0001] This utility model belongs to the field of power plant flue cleaning technology, and in particular relates to a power plant flue cleaning device. Background Technology

[0002] Currently, due to fuel combustion and improper subsequent treatment, the flue gas emitted by power plants contains a large amount of dust. This dust increases the erosion and wear on heat exchangers and denitrification catalysts, shortening their service life and affecting their efficiency, thus impacting the normal operation of the entire power plant process. A search revealed a patent application with application number 202320946943.8, which discloses a power plant flue gas cleaning device. The device includes a flue with at least two collection chambers at its bottom. Each collection chamber is uniformly fixed along the length of the flue and equipped with a filter screen. The filter diameter of the filter screen decreases sequentially along the length of the flue. The top of each filter screen is connected to the top of the flue, and the bottom of each filter screen is detachably connected to the top of the corresponding collection chamber. Both sides of each filter screen are engaged with the inner wall of the flue. The surface of the filter screen has a continuous undulating structure.

[0003] However, during actual use, the applicant found that although it could clean the dust on the filter screen when cleaning the flue, it was not convenient to clean the dust attached to the inner wall of the flue. When the dust on the inner wall of the flue accumulated to a certain amount, it would have an adverse effect on the emission of flue gas. In view of this, we propose a flue cleaning device for power plants. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model relates to a flue gas cleaning device for power plants, comprising a flue pipe. Cleaning windows are evenly spaced at the bottom of the flue pipe along its flue direction. A sealing plate is fixedly connected to the bottom of the flue pipe below the cleaning windows via nuts. A connecting stud is fixedly installed on the top of the sealing plate, with its upper end penetrating the top of the flue pipe and threadedly engaging with the nut. A filter screen is fixedly installed on the top of the sealing plate, and hooks are symmetrically arranged at the bottom of the filter screen. A screw is rotatably connected to the bottom of the sealing plate via a support, with the screw threaded through the middle of a limiting frame. The top of the limiting frame slides along the bottom of the sealing plate. The hooks penetrate the sealing plate and are limited on the sealing plate by the limiting frame. Dust-blocking plates are alternately fixedly installed on the top of the sealing plate in front of the filter screen. The mesh size of the filter screen in the flue pipe decreases sequentially along the direction of flue gas flow.

[0006] Preferably, the support is fixedly installed at the bottom of the sealing plate, and the screw is rotatably connected to the support through a bearing.

[0007] Preferably, one end of the screw is fixedly provided with an adjusting handle, and the adjusting handle is evenly provided with anti-slip teeth.

[0008] Preferably, the bottom of the filter screen is attached to the top of the sealing plate, the two sides of the filter screen are attached to the two sides of the inside of the flue pipe, and the top of the filter screen is attached to the top of the inside of the flue pipe.

[0009] Preferably, the top of the sealing plate has a slot, the hook passes through the slot, and the limiting bracket is engaged in a slot on the hook.

[0010] Preferably, a sealing gasket is fixedly provided at the top edge of the sealing plate.

[0011] This utility model has the following beneficial effects:

[0012] This utility model discloses a flue gas cleaning device for power plants. By unscrewing the nut from the upper end of the screw, the sealing plate can be removed from the flue pipe, allowing personnel to easily clean the dust adhering to the inner wall of the flue pipe through the cleaning window. The dust-blocking plate can block some of the dust in the flue gas, causing some dust to collide and adhere to the dust-blocking plate, preventing the filter screen from clogging too quickly and thus avoiding frequent cleaning of the filter screen. By rotating the screw, the limiting bracket can be moved out of the slot at the hook, allowing the filter screen to be quickly removed from the sealing plate for cleaning. The operation is convenient. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of a power plant flue dust removal device according to the present invention;

[0015] Figure 2 This is a schematic diagram of the connection structure between the sealing plate and the filter screen of a power plant flue cleaning device according to the present invention.

[0016] Figure 3 This utility model relates to a power plant flue gas cleaning device. Figure 1 Enlarged view of the structure at point A in the middle.

[0017] The attached diagram lists the components represented by each number as follows:

[0018] 1. Flue pipe; 11. Ash removal window; 2. Sealing plate; 21. Connecting stud; 22. Dust barrier plate; 23. Slot; 24. Sealing gasket; 25. Support; 3. Nut; 4. Filter screen; 41. Hook; 5. Screw; 51. Adjusting handle; 6. Limit bracket. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-3 As shown, this utility model provides a technical solution:

[0021] A power plant flue dust removal device includes a flue pipe 1. Dust removal windows 11 are evenly spaced at the bottom of the flue pipe 1 along its flue direction. A sealing plate 2 is fixedly connected to the bottom of the flue pipe 1 below the dust removal windows 11 via nuts 3. A connecting stud 21 is fixedly installed on the top of the sealing plate 2. The upper end of the connecting stud 21 penetrates the top of the flue pipe 1 and is threaded into the nuts 3. By unscrewing the nuts 3 from the upper end of the screws 5, the sealing plate 2 can be removed from the flue pipe 1, allowing personnel to easily clean the dust adhering to the inner wall of the flue pipe 1 through the dust removal windows 11. A filter screen 4 is fixed to the top of the sealing plate 2. The bottom of the filter screen 4 is flush with the top of the sealing plate 2, the two sides of the filter screen 4 are flush with the two sides of the inside of the flue pipe 1, and the top of the filter screen 4 is flush with the top of the inside of the flue pipe 1. Dust-blocking plates are alternately fixed to the top of the sealing plate 2 on the front side of the filter screen 4. 22. A sealing gasket 24 is fixedly installed at the top edge of the sealing plate 2. The mesh size of the filter screen 4 in the flue pipe 1 decreases sequentially along the direction of flue gas flow. The dust blocking plate 22 can block the dust in the flue gas to a certain extent, causing some dust to collide and adhere to the dust blocking plate 22, which can prevent the filter screen 4 from clogging too quickly, thereby avoiding frequent cleaning of the filter screen 4 by personnel. When in use, the power plant flue gas moves along the flue pipe 1. Some of the dust in the flue gas can collide and adhere to the dust blocking plate 22, while other part of the flue gas can be filtered step by step through the filter screen 4. After a period of time, by unscrewing the nut 3 from the upper end of the connecting stud 21 and removing the sealing plate 2 from the bottom of the flue pipe 1, the dust adhering to the inner wall of the flue pipe 1 can be cleaned from the dust removal window 11, and the dust on the dust blocking plate 22 and the filter screen 4 can also be cleaned.

[0022] Hooks 41 are symmetrically arranged at the bottom of the filter screen 4. A screw 5 is rotatably connected to the bottom of the sealing plate 2 via a support 25. The support 25 is fixedly set at the bottom of the sealing plate 2. The screw 5 is rotatably connected to the support 25 via a bearing. The screw 5 is threaded through the middle of the limiting frame 6. An adjusting handle 51 is fixedly set at one end of the screw 5, and anti-slip teeth are evenly distributed on the adjusting handle 51. The top of the limiting frame 6 slides along the bottom of the sealing plate 2. The hooks 41 pass through the sealing plate 2 and are limited on the sealing plate 2 by the limiting frame 6. A slot 2 is provided on the top of the sealing plate 2. 3. Hook 41 passes through slot 23, and limit bracket 6 is locked in the slot on hook 41. By rotating screw 5, limit bracket 6 is moved out of the slot on hook 41, allowing filter screen 4 to be quickly removed from sealing plate 2 for cleaning. The operation is convenient. After removing sealing plate 2 from the bottom of flue pipe 1, adjusting handle 51 can be manually rotated counterclockwise to rotate screw 5. Rotation of screw 5 can move limit bracket 6 out of the slot on hook 41, at which point filter screen 4 can be removed from sealing plate 2 for cleaning.

[0023] Working principle: During use, the flue gas from the power plant moves along the flue pipe 1. Some of the dust in the flue gas can be impacted and adhered to the dust blocking plate 22, while the other part of the flue gas can be filtered step by step through the filter screen 4. After a period of time, by unscrewing the nut 3 from the upper end of the connecting stud 21 and removing the sealing plate 2 from the bottom of the flue pipe 1, the dust adhering to the inner wall of the flue pipe 1 can be cleaned through the dust cleaning window 11, and the dust on the dust blocking plate 22 and the filter screen 4 can also be cleaned. After removing the sealing plate 2 from the bottom of the flue pipe 1, the adjusting handle 51 can be turned counterclockwise by hand to drive the screw 5 to rotate. The rotation of the screw 5 can drive the limit bracket 6 to move out of the slot of the hook 41. At this time, the filter screen 4 can be removed from the sealing plate 2 and cleaned.

[0024] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications to the technical solutions described in the foregoing embodiments or equivalent substitutions of some of the technical features shall fall within the protection scope of the present utility model.

Claims

1. A power plant flue dust removal device, comprising a flue pipe (1), characterized in that: The bottom of the flue pipe (1) is provided with cleaning windows (11) at equal intervals along the flue direction of the flue pipe (1). The bottom of the flue pipe (1) below the cleaning windows (11) is fixedly connected to a sealing plate (2) by a nut (3). A connecting stud (21) is fixedly provided on the top of the sealing plate (2). The upper end of the connecting stud (21) penetrates the top of the flue pipe (1) and is threadedly engaged with the nut (3). A filter screen (4) is fixed on the top of the sealing plate (2). Hooks (4) are symmetrically provided on the bottom of the filter screen (4). 1) The bottom of the sealing plate (2) is rotatably connected to a screw (5) via a support (25). The screw (5) is threaded through the middle of the limiting frame (6). The top of the limiting frame (6) slides along the bottom of the sealing plate (2). The hook (41) passes through the sealing plate (2) and is limited on the sealing plate (2) by the limiting frame (6). Dust-blocking plates (22) are alternately fixed on the top of the sealing plate (2) in front of the filter screen (4). The mesh size of the filter screen (4) in the flue pipe (1) decreases sequentially along the direction of flue gas travel.

2. The power plant flue gas cleaning device according to claim 1, characterized in that, The support (25) is fixedly installed at the bottom of the sealing plate (2), and the screw (5) is rotatably connected to the support (25) through a bearing.

3. The power plant flue gas cleaning device according to claim 2, characterized in that, One end of the screw (5) is fixedly provided with an adjustment handle (51), and the adjustment handle (51) is evenly provided with anti-slip teeth.

4. The power plant flue gas cleaning device according to claim 1, characterized in that, The bottom of the filter screen (4) is attached to the top of the sealing plate (2), the two sides of the filter screen (4) are attached to the two sides inside the flue pipe (1), and the top of the filter screen (4) is attached to the top of the inside of the flue pipe (1).

5. A power plant flue gas cleaning device according to claim 1, characterized in that, The top of the sealing plate (2) is provided with a slot (23), the hook (41) passes through the slot (23), and the limiting frame (6) is locked in the slot opened on the hook (41).

6. The power plant flue gas cleaning device according to claim 1, characterized in that, A sealing gasket (24) is fixedly installed at the top edge of the sealing plate (2).

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