Exhaust structure of centralized ash bin

Abstract

The utility model relates to the technical field, in particular to a centralized ash bin exhaust structure which comprises a plurality of adjusting straight pipes, one of the adjusting straight pipes is arranged at a top opening of an ash bin, every two adjacent adjusting straight pipes are connected through a flange structure, and the adjusting straight pipes are arranged on the top opening of the ash bin. A filtering structure is arranged in the flange structure; by arranging the flange sealing gasket and the filtering structure, the filtering function of the exhaust hole device is increased, exhaust and pressure relief are guaranteed, meanwhile, the problem of dust accumulation is avoided, the leakage rate of fly ash is controlled, secondary pollution of the fly ash is avoided to the maximum extent, the field working environment is protected, and the working efficiency is improved; by arranging the metal fiber felt filter screen, dust is effectively isolated, gas pressure is released, in addition, overhaul and maintenance are convenient, the size is small, the weight is light, and cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of water circulation, in particular to a centralized ash bin exhaust structure. Background Art

[0002] The dust collected by the scraper conveyor of the dust removal system is sent to the centralized ash bin through the bucket elevator. The function of the centralized ash bin is to frequently receive materials and output materials in time. Internal pressure will be generated in the process of receiving and outputting materials, or receiving and outputting materials at the same time. Exhaust holes need to be set to release the pressure to balance the pressure difference.

[0003] At present, there are two types of exhaust devices in traditional centralized ash silos; Method 1: Figure 1 As shown in the figure, the top plate of the centralized ash bin is opened, and a straight pipe with an elbow structure is set. One end is connected to the opening of the top plate of the centralized ash bin, and the other end of the pipe extends downward to the outside of the cylinder wall. However, in the process of receiving and discharging materials, the dust collected will be released through the exhaust hole, causing secondary pollution. Method 2: As shown in the figure, the top plate of the centralized ash bin is opened, and a straight pipe with an elbow structure is set. One end of the pipe is connected to the opening of the top plate of the centralized ash bin, and the other end of the pipe extends downward to the outside of the cylinder wall. However, in the process of receiving and discharging materials, the dust collected will be released through the exhaust hole, causing secondary pollution. Figure 2 As shown, a hole is opened in the top plate of the centralized ash silo, and a straight pipe with an elbow structure is set. One end is connected to the hole in the top plate of the centralized ash silo, and the other end of the pipe is inclined toward the dust hopper, and is connected to the dust hopper through a non-standard elbow and a straight pipe section. In the process of receiving and discharging materials, due to the distance, the slope of this section of the pipeline is not conducive to the flow of dust ash. After long-term use, it is very easy to cause dust accumulation and blockage, which needs to be disassembled and cleaned, increasing the operating workload.

[0004] Therefore, it is necessary to provide a centralized ash bin exhaust structure that does not leak and is easy to clean. Utility Model Content

[0005] The utility model provides a centralized ash bin exhaust structure to solve the above technical problems.

[0006] In order to achieve the above-mentioned purpose, an embodiment of the utility model provides a centralized ash bin exhaust structure, including: a plurality of adjusting straight pipes, one of which is arranged at the top opening of the ash bin, and two adjacent adjusting straight pipes are connected by a flange structure, and a filtering structure is arranged in the flange structure.

[0007] Furthermore, the other two adjacent regulating straight pipes are connected via a non-standard elbow or a degree elbow.

[0008] Furthermore, the flange structure includes two flange plates, and the two flange plates are respectively fixed on the ends of the regulating straight pipe.

[0009] Furthermore, the two flanges are connected by fasteners, and the fasteners are arranged near the edges of the flanges.

[0010] Furthermore, a flange sealing gasket is arranged between the contact surfaces of the two flanges.

[0011] Furthermore, the outer diameter of the flange sealing gasket is greater than the outer diameter of the flange plate, and the inner diameter of the flange sealing gasket is consistent with the outer diameter of the regulating straight pipe.

[0012] Furthermore, a filtering structure is provided on the inner wall of at least one of the flanges.

[0013] Furthermore, the filtering structure includes two straight-surface metal fiber felt filter screens, and the outer walls of the straight-surface metal fiber felt filter screens are fixedly connected to the inner wall of the flange.

[0014] Furthermore, a plurality of vertically arranged Z-shaped metal fiber felt filters are arranged between the two straight-surface metal fiber felt filters.

[0015] Furthermore, the folding angle of the Z-shaped metal fiber felt filter is 35 degrees to 55 degrees.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] By setting flange sealing gaskets and filtering structures, the filtering function of the exhaust hole device is increased, while ensuring exhaust pressure relief, dust accumulation is avoided, the leakage rate of dust removal dust is controlled, and secondary pollution of dust removal dust is avoided to the greatest extent, the on-site working environment is protected, and work efficiency is improved;

[0018] By setting up a metal fiber felt filter, dust can be effectively isolated and gas pressure can be released. In addition, it is easy to inspect and maintain, with small size, light weight, and cost saving.

[0019] By setting a Z-shaped metal fiber felt filter, the dust filtration effect can be further improved, the maintenance interval can be extended, and the maintenance frequency can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a structural schematic diagram of a centralized ash bin exhaust structure of method 1 in the prior art;

[0022] Figure 2 It is a structural schematic diagram of the centralized ash bin exhaust structure of the second method in the prior art;

[0023] Figure 3 This is a schematic diagram of the structure of the centralized ash bin exhaust structure of the utility model;

[0024] Figure 4 It is a three-dimensional cross-sectional view of the optimal embodiment of the guide tube of the utility model.

[0025] Among them, 1. ash bin; 2. adjusting straight pipe; 3. non-standard elbow; 4. 90 degree elbow; 5. flange structure; 6. fasteners; 7. filter structure; 71. straight metal fiber felt filter; 72. Z-shaped metal fiber felt filter; 8. flange sealing gasket. DETAILED DESCRIPTION

[0026] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0027] See also Figure 3 , Figure 3 This is a schematic diagram of the structure of the centralized ash bin exhaust structure of the utility model. Figure 3 As shown, at least one embodiment provides a centralized ash bin exhaust structure, including: a plurality of regulating straight pipes 2, wherein one regulating straight pipe 2 is arranged at the top opening of the ash bin 1, specifically, an opening is arranged at the top of the ash bin 1, an regulating straight pipe 2 is arranged at the opening position, a flange is arranged on the regulating straight pipe 2, a second regulating straight pipe 2 is connected to the top of the flange through another flange, two adjacent regulating straight pipes 2 are connected through a flange structure 5, and the other two adjacent regulating straight pipes 2 are connected through a non-standard elbow 3 or a 90-degree elbow 4, a third regulating straight pipe 2 is connected to the top of the second regulating straight pipe 2 through a 90-degree elbow 4, and one side of the third regulating straight pipe 2 is connected to the fourth regulating straight pipe 2 through a non-standard elbow 3.

[0028] In order to solve the problem of dust accumulation and clogging in the pipeline, a filter structure 7 is provided in the flange structure 5. The specific composition of the flange structure 5 is described in detail below. The flange structure 5 includes two flanges, and the two flanges are respectively fixed to the ends of the two regulating straight pipes 2. The two flanges are connected by fasteners 6, and the fasteners 6 include multiple bolts and multiple nuts. The fasteners 6 are arranged near the edge of the flange.

[0029] In order to solve the problem of dust leakage and secondary pollution caused by the release of the exhaust hole, a flange sealing gasket 8 is provided between the contact surfaces of the two flanges. The outer diameter of the flange sealing gasket 8 is larger than the outer diameter of the flange, and the inner diameter of the flange sealing gasket 8 is consistent with the outer diameter of the regulating straight pipe 2. By providing the flange sealing gasket 8 and the filtering structure 7, the filtering function of the exhaust hole device is increased, while ensuring the exhaust pressure relief, the dust accumulation problem is not generated, the leakage rate of the dust is controlled, the secondary pollution of the dust is avoided to the maximum extent, the on-site working environment is protected, and the work efficiency is improved.

[0030] See also Figure 4 , Figure 4 This is a three-dimensional cross-sectional view of the optimal embodiment of the guide tube of the utility model. Figure 4 As shown, a filter structure 7 is provided on the inner wall of at least one flange. In order to further enhance the filtering effect, the filter structure 7 includes two straight-faced metal fiber felt filters 71, and the outer wall of the straight-faced metal fiber felt filter 71 is fixedly connected to the inner wall of the flange. A plurality of vertically arranged Z-shaped metal fiber felt filters 72 are provided between the two straight-faced metal fiber felt filters 71. The Z-shaped metal fiber felt filter 72 can maximize the contact area with dust in a limited space, thereby greatly increasing the amount of dust that can be retained, extending the time interval required for cleaning and maintenance, and reducing the workload of operators; in addition, the structure in which a plurality of vertically arranged Z-shaped metal fiber felt filters 72 are provided between the two straight-faced metal fiber felt filters 71 enhances the filtering effect. The straight metal fiber felt filter 71 and the Z-shaped metal fiber felt filter 72 are collectively referred to as metal fiber felt filters. The addition of the metal fiber felt filter allows the present embodiment to effectively isolate dust and release gas pressure. In addition, it is easy to inspect and maintain, has a small size, light weight, and saves costs. Since the Z-shaped metal fiber felt filter 72 has a too large folding angle, the contact area with the dust will become smaller, making it difficult to fully achieve the purpose of delaying the inspection time. If the angle is too small, the air circulation of the filter will slow down and it will be easy to get clogged. Therefore, the folding angle of the Z-shaped metal fiber felt filter 72 is 35 degrees to 55 degrees.

[0031] In summary, by arranging the flange sealing gasket 8 and the filtering structure 7, the filtering function of the exhaust hole device is increased, and while ensuring the exhaust pressure relief, no dust accumulation problem occurs, the leakage rate of dust removal dust is controlled, and the secondary pollution of dust removal dust is avoided to the maximum extent, the on-site working environment is protected, and the work efficiency is improved; by arranging the metal fiber felt filter, the dust is effectively isolated and the gas pressure is released. In addition, it is convenient to inspect and maintain, with a small size, light weight, and cost saving; by arranging the Z-shaped metal fiber felt filter 72, the dust filtering effect is further improved, the maintenance interval is extended, and the maintenance frequency is reduced.

[0032] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A centralized ash bin exhaust structure, characterized in that: include: A plurality of regulating straight pipes (2), one of which is arranged at a top opening of an ash bin (1), two adjacent regulating straight pipes (2) are connected via a flange structure (5), and a filtering structure (7) is arranged inside the flange structure (5).

2. The centralized ash bin exhaust structure according to claim 1, characterized in that: The other two adjacent regulating straight pipes (2) are connected via a non-standard elbow (3) or a 90-degree elbow (4).

3. The centralized ash bin exhaust structure according to claim 1, characterized in that: The flange structure (5) comprises two flange plates, and the two flange plates are respectively fixed on the ends of the regulating straight pipe (2).

4. The centralized ash bin exhaust structure according to claim 3, characterized in that: The two flanges are connected via a fastener (6), and the fastener (6) is arranged near the edge of the flange.

5. The centralized ash bin exhaust structure according to claim 4, characterized in that: A flange sealing gasket (8) is arranged between the contact surfaces of the two flanges.

6. The centralized ash bin exhaust structure according to claim 5, characterized in that: The outer diameter of the flange sealing gasket (8) is greater than the outer diameter of the flange plate, and the inner diameter of the flange sealing gasket (8) is consistent with the outer diameter of the regulating straight pipe (2).

7. The centralized ash bin exhaust structure according to claim 3, characterized in that: A filtering structure (7) is arranged on the inner wall of at least one of the flanges.

8. The centralized ash bin exhaust structure according to claim 7, characterized in that: The filtering structure (7) comprises two straight-surface metal fiber felt filter screens (71), and the outer walls of the straight-surface metal fiber felt filter screens (71) are fixedly connected to the inner wall of the flange.

9. The centralized ash bin exhaust structure according to claim 8, characterized in that: A plurality of vertically arranged Z-shaped metal fiber felt filter screens (72) are arranged between the two straight-surface metal fiber felt filter screens (71).

10. The centralized ash bin exhaust structure according to claim 9, characterized in that: The folding angle of the Z-shaped metal fiber felt filter (72) is 35 degrees to 55 degrees.

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