A boiler flue gas cleaning device

Abstract

The utility model relates to the field of biomass boiler relates to a boiler flue gas purification device, the utility model discloses a filter case, spray tank and processing box, filter case right -hand member is equipped with the flue gas inlet pipe, and filter case side end sliding is equipped with filter assembly, and filter assembly includes fixed plate no.

Description

Technical Field

[0001] This utility model relates to the field of biomass boilers, and specifically to a boiler flue gas purification device. Background Technology

[0002] Biomass boilers are a type of boiler that uses biomass energy as fuel. During operation, these boilers produce a large amount of flue gas containing dust and other contaminants. Current flue gas treatment methods typically involve discharging the flue gas into a spray system to reduce dust and remove acidic gases. However, the spray method results in short contact time with the flue gas, leading to poor dust reduction and acidic gas removal.

[0003] Therefore, in order to overcome the shortcomings of existing technologies, it is necessary to design a boiler flue gas purification device with a simple structure. Utility Model Content

[0004] This utility model provides a boiler flue gas purification device to solve the problems of the prior art.

[0005] The objective of this utility model can be achieved through the following technical solution: A boiler flue gas purification device includes a filter box, a spray box, and a treatment box. The filter box has a flue gas inlet pipe at its right end and a filter assembly slidably mounted on its side. The filter assembly includes a first fixing plate, a second fixing plate, a filter screen, a first sealing gasket, and a second sealing gasket. The first fixing plate has a stepped hole extending through both sides. The first sealing gasket, the filter screen, and the second sealing gasket are sequentially arranged in the narrow part of the stepped hole. One side of the second fixing plate extends into the wide part of the stepped hole and is fixedly connected to the first fixing plate by bolts. A through-hole is provided between the second fixing plate, the first sealing gasket, and the second sealing gasket. The lower end of the filter box is provided with a guide hole communicating with the spray box. The top of the inside of the spray box is provided with a base plate. Spray heads are installed at intervals at the lower end of the base plate. A water inlet assembly connected to the spray heads is provided at the upper end of the base plate. An interlaced partition is provided below the base plate. The lowest interlaced partition is provided with a water seal chamber. The inside of the treatment box is immersed in an S-shaped aeration pipe. An air outlet is provided at intervals on the S-shaped aeration pipe. A connecting pipe communicating with the right end of the S-shaped aeration pipe is provided on the upper left side of the spray box. An exhaust port is provided at the top of the treatment box.

[0006] In a further improvement, a rectangular protrusion is provided on one side of the fixing plate, the rectangular protrusion is hollow inside, and the width of the outer side of the rectangular protrusion matches the width of the stepped hole.

[0007] In a further improvement, the staggered partitions are provided in four sets.

[0008] As a further improvement, the bottom of the spray box is equipped with a water outlet pipe, and a control valve is installed on the water outlet pipe.

[0009] Compared with the prior art, the beneficial effects of this utility model boiler flue gas purification device are as follows:

[0010] The flue gas is fed into the filter box through the inlet pipe, and then undergoes primary filtration of particles in the flue gas through the filter screen. Next, it flows in an S-shape through staggered baffles, an upper substrate, and a lower water seal chamber. Secondary dust removal is achieved through the water inlet assembly and spray nozzles, causing finer particles in the flue gas to settle into the water seal chamber. The flue gas then enters the S-shaped aeration pipe through the connecting pipe and exits through the outlet. The multiple outlets increase contact with the solution inside the treatment box. This solution is a substance that can treat acidic gases, improving the overall purification effect. Furthermore, the relatively long S-shaped aeration pipe within the treatment box further enhances the purification effect. Attached Figure Description

[0011] Figure 1 This is a structural schematic diagram of the present invention.

[0012] Figure 2 This is a schematic diagram of the structure of the filter screen in this utility model.

[0013] Figure 3 for Figure 2 Exploded view structural diagram

[0014] Figure 4 for Figure 1 Schematic diagram of the enlarged part

[0015] In the diagram, 1-Filter box, 11-Smoke inlet pipe, 12-Filter assembly, 121-Fixing plate one, 122-Fixing plate two, 123-Stepped hole, 124-Rectangular protrusion, 13-Filter screen, 131-Sealing gasket one, 132-Sealing gasket two, 133-Channel, 314-Guide hole, 2-Spray box, 21-Base plate, 22-Spray head, 23-Water inlet assembly, 24-Staggered baffle, 25-Water seal chamber, 26-Connecting pipe, 27-Water outlet pipe, 28-Control valve, 3-Treatment box, 31-Exhaust port, 4-Aeration pipe, 41-Air outlet. Detailed Implementation

[0016] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] The following is a description of the embodiments and appendices. Figures 1-4 The technical solution of this utility model will be further described below.

[0019] Example 1

[0020] A boiler flue gas purification device includes: a filter box 1, a spray box 2, and a treatment box 3. The filter box 1 has a flue gas inlet pipe 11 at its right end, and a filter assembly 12 is slidably mounted on its side. The filter assembly 12 includes a first fixing plate 121, a second fixing plate 122, a filter screen 13, a first sealing gasket 131, and a second sealing gasket 132. The first fixing plate 121 has a stepped hole 123 extending through both sides. The first sealing gasket 131, the filter screen 13, and the second sealing gasket 132 are sequentially arranged in the narrow portion of the stepped hole 123. One side of the second fixing plate 122 extends into the wide portion of the stepped hole 123 and is fixedly connected to the first fixing plate 121 by bolts. The first fixing plate 121 and the second fixing plate 122... A through-hole 133 is provided between sealing gasket 131 and sealing gasket 22. The lower end of the filter box 1 is provided with a guide hole 14 communicating with the spray box 2. The top of the inside of the spray box 2 is provided with a base plate 21. Spray heads 22 are installed at intervals at the lower end of the base plate 21. The upper end of the base plate 21 is provided with a water inlet assembly 23 connected to the spray heads 22. The bottom of the base plate 21 is provided with an interlaced partition 24. The lowest interlaced partition 24 is provided with a water seal chamber 25. The inside of the treatment box 3 is immersed in an S-shaped aeration pipe 4. The S-shaped aeration pipe 4 is provided with an air outlet 41 at intervals. The upper left side of the spray box 2 is provided with a connecting pipe 26 communicating with the right end of the S-shaped aeration pipe 4. The top of the treatment box 3 is provided with an exhaust port 31.

[0021] like Figures 1-4 As shown, the working principle of this utility model is as follows: the smoke is fed into the filter box 1 through the inlet pipe 12, and then the particles in the smoke are initially filtered by the filter assembly 12, and then the particles are filtered by the internal filter screen 13. The fixing plate 121 is fixed inside the filter box 1 to ensure airtightness, and can be connected by welding.

[0022] Specifically, the narrow portion of the stepped hole 123 is used to install sealing gasket 131, filter screen 13, and sealing gasket 132, forming a multi-layer filter sealing structure. The wide portion of the stepped hole 123 is used to accommodate the extension end of fixing plate 122, which is fixed to fixing plate 121 by bolts, ensuring the entire assembly fits tightly against the inner wall of the filter box. Sealing gaskets 131 and 132 are located on both sides of the filter screen, forming a bidirectional seal through the compression of the narrow portion of the stepped hole, preventing unfiltered flue gas from leaking from the edge of the assembly. Fixing plate 1 and fixing plate 2 are connected by bolts, allowing for quick disassembly of the assembly and individual replacement of damaged sealing gaskets or filter screens, reducing maintenance costs.

[0023] Then, through the staggered baffle 24, the upper substrate 21, and the lower water seal chamber 25, the flue gas flows in an S-shape. It achieves secondary dust removal through the water inlet assembly 23 and the spray head 22, causing finer particles in the flue gas to settle into the water seal chamber 25. Then, the flue gas enters the S-shaped aeration pipe 4 through the connecting pipe 26 and is discharged from the air outlet 41. The multiple air outlets 41 can increase the contact with the solution inside the treatment tank 3. The solution is a substance that can treat acidic gases, which improves the overall purification effect. In addition, the S-shaped aeration pipe 4 is relatively long inside the treatment tank 3, which can further increase the purification effect.

[0024] As a further preferred embodiment, a rectangular protrusion 124 is provided on one side of the fixing plate 122. The rectangular protrusion 124 is hollow inside, and the outer side of the rectangular protrusion 124 is matched with the width of the stepped hole 123.

[0025] As a further preferred embodiment, the staggered partitions 24 are provided in four sets at intervals.

[0026] As a further preferred embodiment, the bottom of the spray box 2 is provided with a water outlet pipe 27, and a control valve 28 is provided on the water outlet pipe 27. The particles that settle in the water seal chamber 25 are discharged after passing through the water outlet pipe 27.

[0027] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A boiler flue gas purification device, characterized in that, include: The system includes a filter box, a spray box, and a treatment box. The filter box has a smoke inlet pipe at its right end and a slidable filter assembly on its side. The filter assembly includes a first fixing plate, a second fixing plate, a filter screen, a first sealing gasket, and a second sealing gasket. The first fixing plate has a stepped hole extending through both sides. The first sealing gasket, the filter screen, and the second sealing gasket are sequentially positioned in the narrow portion of the stepped hole. One side of the second fixing plate extends into the wide portion of the stepped hole and is fixedly connected to the first fixing plate by bolts. A space is provided between the first fixing plate, the second fixing plate, the first sealing gasket, and the second sealing gasket. The filter box has a through channel, and the lower end of the filter box is provided with a guide hole that communicates with the spray box. The top of the spray box is provided with a base plate, and the lower end of the base plate is equipped with spray heads at intervals. The upper end of the base plate is provided with a water inlet assembly connected to the spray heads. The lower part of the base plate is provided with staggered partitions, and the lowest staggered partition is provided with a water seal chamber. The inside of the treatment box is immersed in an S-shaped aeration pipe, and the S-shaped aeration pipe is provided with air outlets at intervals. The upper left side of the spray box is provided with a connecting pipe that communicates with the right end of the S-shaped aeration pipe. The top of the treatment box is provided with an exhaust port.

2. The boiler flue gas purification device according to claim 1, characterized in that, The second fixing plate has a rectangular protrusion on one side. The rectangular protrusion is hollow inside and the width of the stepped hole is matched on the outside of the rectangular protrusion.

3. The boiler flue gas purification device according to claim 1, characterized in that, The staggered partitions are arranged in four groups.

4. The boiler flue gas purification device according to claim 1, characterized in that, The bottom of the spray box is equipped with a water outlet pipe, and a control valve is installed on the water outlet pipe.

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