A boiler with ash filtering function

Abstract

This application relates to the field of boiler technology, specifically disclosing a boiler with ash filtering function, including a boiler body. The boiler body has, from top to bottom, a filter chamber, a working chamber, a combustion chamber, and a slag chamber. A filter plate is installed in the filter chamber, and an inclined ash guide plate is installed below the filter plate. An ash passage is also provided in the boiler body. The upper end of the ash passage is connected to the lower edge of the guide plate, and the lower end of the ash passage is connected to the slag chamber. During operation, the flue gas generated in the combustion chamber rises to the filter chamber. Large particles of ash are intercepted by the filter plate and slide along the guide plate into the ash passage, eventually collecting in the slag chamber. This structure, through the synergistic effect of physical interception and gravity guidance, effectively reduces the amount of ash carried in the flue gas, significantly reduces the risk of ash accumulation in the flue gas exhaust channel, and thus extends the equipment maintenance cycle.

Description

Technical Field

[0001] This application relates to the field of boiler technology, and in particular to a boiler with a function of filtering furnace ash. Background Technology

[0002] A boiler is an energy conversion device. The energy input to a boiler includes the chemical energy of fuel and electrical energy. The boiler outputs steam, high-temperature water, or organic heat carriers with a certain amount of thermal energy.

[0003] Patent document CN116464974A discloses a boiler slag recovery device. It uses a receiving box with screening holes installed between the furnace chamber and the slag storage chamber. Before some incompletely burned coal and slag fall into the slag storage chamber, they are first received by the receiving box. Then, a screening mechanism installed in the receiving box separates the mixed incompletely burned coal and slag, allowing the slag to be screened into the slag storage chamber and the incompletely burned coal to be screened into the receiving box. This facilitates the centralized recycling and reuse of the incompletely burned coal later, reducing resource waste and having certain positive significance. However, it also has some drawbacks, such as the presence of a large amount of furnace ash in the flue gas, requiring frequent cleaning of the boiler's exhaust channels and affecting operating efficiency. Utility Model Content

[0004] The purpose of this application is to provide a boiler with a function of filtering furnace ash in order to solve the above-mentioned problems.

[0005] To achieve the above objectives, the technical solution of this application is as follows:

[0006] A boiler with ash filtration function includes a boiler body. The boiler body is provided with a filtration chamber, a working chamber, a combustion chamber and a slag chamber from top to bottom. A filter plate is provided in the filtration chamber. An inclined ash guide plate is provided below the filter plate. The boiler body is also provided with an ash passage. The upper end of the ash passage is connected to the lower edge of the guide plate, and the lower end of the ash passage is connected to the slag chamber.

[0007] Preferably, the furnace body has a replacement port corresponding to the filter chamber, the inner wall of the filter chamber is provided with a support ring, and the filter plate is slidably disposed on the support ring through the replacement port.

[0008] Preferably, the upper edge of the ash guide plate near the filter plate is inclined towards the center of the furnace body, and the lower edge of the ash guide plate away from the filter plate is inclined away from the center of the furnace body.

[0009] Preferably, the working chamber is provided with a pipe to be heated, and both ends of the pipe to be heated are located outside the furnace body.

[0010] Preferably, an auxiliary heating pipe is radially provided through the pipe to be heated, and both ends of the auxiliary heating pipe are located outside the pipe to be heated; the auxiliary heating pipe is vertically arranged.

[0011] Preferably, the working chamber is provided with a material grate for supporting the burning material; the furnace body is provided with a feeding port corresponding to the working chamber, and a material outlet is hinged to the feeding port.

[0012] Preferably, the outer peripheral wall of the furnace body is provided with a slag outlet corresponding to the slag cavity, and a slag outlet door is slidably provided on the slag outlet.

[0013] Preferably, a slag scraper is slidably provided in the slag chamber, and multiple baffles are spaced apart on the slag scraper. The cross-section of the baffle is an acute triangle, with the side corresponding to the acute angle facing the slag outlet.

[0014] The boiler disclosed in this application, which has an ash-filtering function, operates by having the flue gas generated in the combustion chamber rise to the filter chamber. Large ash particles are intercepted by the filter plates and then slide along the guide plates into the ash passage, eventually accumulating in the slag chamber. This structure, through the synergistic effect of physical interception and gravity guidance, effectively reduces the amount of ash carried in the flue gas, significantly reduces the risk of ash accumulation in the exhaust passage, and thus extends the equipment maintenance cycle. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this application;

[0016] Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle;

[0017] Figure 3 This is a top view of the overall structure of this application;

[0018] Figure 4 for Figure 3 Sectional view of section AA;

[0019] Figure 5 for Figure 3 Sectional view of section BB;

[0020] Figure 6 This is a partially enlarged schematic diagram of the stop bar in this application.

[0021] In the picture:

[0022] 1. Furnace body; 2. Filter chamber; 20. Filter plate; 21. Ash guide plate; 3. Working chamber; 30. Pipe to be heated; 31. Auxiliary heating pipe; 4. Combustion chamber; 40. Material grate; 41. Feeding port; 5. Slag chamber; 50. Slide frame; 51. Slag outlet; 52. Slag door; 6. Push rod; 60. Slag scraper rod; 61. Stop bar; 7. Ash passage. Detailed Implementation

[0023] The present application will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the present application, and therefore only show the components relevant to the present application.

[0024] like Figure 1-6 As shown, a boiler with ash filtration function includes a boiler body 1. The boiler body 1 is provided with a filter chamber 2, a working chamber 3, a combustion chamber 4 and a slag chamber 5 from top to bottom. The filter chamber 2 is provided with a filter plate 20. An inclined ash guide plate 21 is provided below the filter plate 20. The boiler body 1 is also provided with an ash passage 7. The upper end of the ash passage 7 is connected to the lower edge of the ash guide plate 21, and the lower end of the ash passage 7 is connected to the slag chamber 5.

[0025] The main body of this boiler adopts a longitudinal layered design, with a filter chamber 2, a working chamber 3, a combustion chamber 4, and a slag chamber 5 arranged sequentially from top to bottom. The filter chamber 2 is equipped with a filter plate 20 that can intercept solid particles, and an inclined ash guide plate 21 is arranged below it.

[0026] The lower edge of the guide plate connects to the slag chamber 5 via the ash passage 7, with a smooth transition in the inner wall of the passage. During operation, the flue gas generated in the combustion chamber 4 rises to the filter chamber 2. Large particles of ash are intercepted by the filter plate 20 and slide along the guide plate into the ash passage 7, eventually collecting in the slag chamber 5. This structure, through the synergistic effect of physical interception and gravity guidance, effectively reduces the amount of ash carried in the flue gas, significantly reduces the risk of ash accumulation in the exhaust channel, and thus extends the equipment maintenance cycle.

[0027] In some further embodiments, the furnace body 1 has a replacement port corresponding to the filter chamber 2, and the inner wall of the filter chamber 2 is provided with a support ring. The filter plate 20 is slidably disposed on the support ring through the replacement port.

[0028] A rectangular replacement port is provided on the side wall of the filter chamber 2, and its size is slightly larger than the outer contour of the filter plate 20 to facilitate disassembly and assembly.

[0029] A support ring is welded to the inner wall of the chamber, and the filter plate 20 is horizontally pushed onto the support ring through the replacement port. When cleaning or replacing the filter plate 20 is required, the replacement port can be opened for quick operation without disassembling the main boiler components. This design simplifies the maintenance process, improves equipment operability, and is particularly suitable for operating conditions requiring frequent cleaning.

[0030] In some further embodiments, the upper edge of the ash guide plate 21 near the filter plate 20 is inclined toward the center of the furnace body 1, and the lower edge of the ash guide plate 21 away from the filter plate 20 is inclined away from the center of the furnace body 1.

[0031] The ash guide plate 21 is inclined in this manner: the upper section near the filter plate 20 is inclined towards the center of the furnace body 1, and the lower section away from the filter plate 20 is inclined away from the center. This design makes the movement trajectory of the ash on the guide plate more reasonable, ensuring the smooth sliding of the ash and improving the ash separation efficiency.

[0032] In some further embodiments, the working chamber 3 is provided with a pipe 30 to be heated, and both ends of the pipe 30 to be heated are located outside the furnace body 1.

[0033] The working chamber 3 contains a pipe 30 to be heated, which is made of a material with good thermal conductivity.

[0034] The two ends of the pipe pass through the side wall of furnace body 1 and connect to the external system to form an independent circulation loop.

[0035] The thermal radiation generated by the combustion chamber 4 and the rising hot airflow work together to heat the pipe 30, causing the internal medium to absorb heat.

[0036] There are three sets of pipes 30 to be heated, which are arranged at intervals on the same plane.

[0037] In other embodiments, the pipe 30 to be heated may also be arranged in a curved spiral to improve heat exchange efficiency.

[0038] In some further embodiments, an auxiliary heating pipe 31 is radially provided through the pipe to be heated 30, and both ends of the auxiliary heating pipe 31 are located outside the pipe to be heated 30; the auxiliary heating pipe 31 is vertically arranged.

[0039] An auxiliary heating pipe 31 is radially inserted through the middle of the main pipe 30, and is arranged perpendicular to the axis of the main pipe. Both ends of the auxiliary heating pipe 31 extend beyond the outer wall of the main pipe, allowing heat to pass through. This improves the heat exchange efficiency.

[0040] In some further embodiments, the working chamber 3 is provided with a material grate 40 for supporting the burning material; the furnace body 1 is provided with a feeding port 41 corresponding to the working chamber 3, and a material outlet is hinged on the feeding port 41.

[0041] A material grate 40 is installed at the top of the combustion chamber 4, and its structure can prevent large pieces of fuel from falling.

[0042] A feeding port 41 is provided on the side wall of the furnace body 1 corresponding to the working chamber 3. The feeding port 41 is connected to a sealing door via a hinge, and the inside of the door is lined with heat-insulating material. During feeding, the sealing door is opened to allow fuel to be fed into the material grate 40. After closing, the sealing door and the feeding port 41 form a sealed structure to prevent air leakage. This design ensures uniform fuel distribution, reduces heat loss, and improves combustion efficiency.

[0043] In some further embodiments, the outer peripheral wall of the furnace body 1 is provided with a slag outlet 51 corresponding to the slag cavity 5, and a slag outlet gate 52 is slidably provided on the slag outlet 51.

[0044] The bottom of the slag chamber 5 is designed as a funnel-shaped structure, and a rectangular slag outlet 51 is opened on its side wall.

[0045] A chute frame 50 is provided on the outside of the slag outlet 51, and the slag outlet door 52 is slidably installed in the chute frame 50.

[0046] When it is necessary to clean the slag, pull the handle of the slag discharge door 52 to slide it open along the slide frame 50, and the slag can be discharged from the slag discharge port 51.

[0047] In some further embodiments, a slag scraper 60 is slidably provided in the slag chamber 5, and a plurality of baffles 61 are provided on the slag scraper 60 at intervals. The cross section of the baffles 61 is an acute triangle, and the side corresponding to the acute angle faces the slag outlet 51.

[0048] A slag scraper 60 is installed inside the slag chamber 5, with its two ends engaging with the side wall guide groove via sliders. Multiple triangular baffles 61 are welded onto the slag scraper 60, with their cross-sections having acute angles and the side corresponding to the acute angle facing the slag outlet 51.

[0049] When cleaning slag, the scraper rod 60 is pushed to reciprocate along the guide groove, and the stop rod 61 can push the clumped slag toward the slag outlet 51. When pushing toward the slag outlet 51, the area of ​​the side opposite the acute angle is larger, which can push the slag toward the slag outlet 51. When pushing away from the slag outlet 51, the acute angle end faces the direction of movement, which can reduce the pushing resistance.

[0050] One end of the scraper rod 60 is located outside the slag chamber 5, and a push rod 6 is provided on this end for pushing the scraper rod 60.

[0051] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this application.

Claims

1. A boiler with ash filtering function, characterized in that, The furnace includes a furnace body (1), which is provided with a filter chamber (2), a working chamber (3), a combustion chamber (4) and a slag chamber (5) from top to bottom. The filter chamber (2) is provided with a filter plate (20), and an inclined ash guide plate (21) is provided below the filter plate (20). The furnace body (1) is also provided with an ash passage (7), the upper end of which is connected to the lower edge of the guide plate, and the lower end of which is connected to the slag chamber (5).

2. The boiler with ash filtering function according to claim 1, characterized in that, The furnace body (1) has a replacement port corresponding to the filter chamber (2), and the inner wall of the filter chamber (2) is provided with a support ring. The filter plate (20) is slidably disposed on the support ring through the replacement port.

3. The boiler with ash filtering function according to claim 1, characterized in that, The ash guide plate (21) is inclined toward the center of the furnace body (1) from the upper edge near the filter plate (20), and the ash guide plate (21) is inclined away from the center of the furnace body (1) from the lower edge away from the filter plate (20).

4. The boiler with ash filtering function according to claim 1, characterized in that, The working chamber (3) is provided with a pipe (30) to be heated, and both ends of the pipe (30) to be heated are located outside the furnace body (1).

5. The boiler with ash filtering function according to claim 4, characterized in that, An auxiliary heating pipe (31) is radially inserted through the pipe to be heated (30), and both ends of the auxiliary heating pipe (31) are located outside the pipe to be heated (30); the auxiliary heating pipe (31) is vertically arranged.

6. The boiler with ash filtering function according to claim 1, characterized in that, The working chamber (3) is provided with a material grate (40) for supporting the burning material; the furnace body (1) is provided with a feeding port (41) corresponding to the working chamber (3), and a material outlet is hinged on the feeding port (41).

7. The boiler with ash filtering function according to claim 1, characterized in that, The outer peripheral wall of the furnace body (1) is provided with a slag outlet (51) corresponding to the slag chamber (5), and a slag door (52) is slidably provided on the slag outlet (51).

8. The boiler with ash filtering function according to claim 7, characterized in that, A slag scraper (60) is slidably provided in the slag chamber (5). A plurality of baffles (61) are provided on the slag scraper (60) at intervals. The cross section of the baffle (61) is an acute triangle, and the side corresponding to the acute angle faces the slag outlet (51).

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