Demister for demisting tail end of tail gas treatment equipment in high-dust process

Abstract

The utility model discloses a demister for demisting the tail end of tail gas treatment equipment in a high dust process, and particularly relates to the technical field of demisters, the demister comprises an outer shell, an inner cavity is fixedly arranged in the outer shell, a connecting cavity is fixedly arranged on one side of the inner cavity, and a plurality of mounting grooves are formed in the outer shell; mounting frames are fixedly arranged in the multiple mounting grooves, a filtering mechanism is arranged on one side of each mounting frame and comprises filter screens fixedly arranged in the mounting frames, the apertures of the multiple filter screens are sequentially reduced, a stabilizing plate is fixedly arranged on one side of the outer shell, and a water tank is fixedly arranged on the top of the stabilizing plate; a water inlet pipe penetrates through the top of the water tank. Large-particle dust can be intercepted through the filter screen, the burden of a subsequent demisting mechanism is relieved, dust on the filter screen and the baffle plate can be periodically removed, the shutdown cleaning frequency is reduced, and the equipment operation continuity is improved.

Description

Technical Field

[0001] This utility model relates to the field of demister technology, and more specifically, to a demister for demisting the tail end of a high-dust process exhaust gas treatment equipment. Background Technology

[0002] In many industrial production processes, such as metallurgy, chemical industry, and building materials industry, a large amount of exhaust gas containing dust and mist is generated. When treating these exhaust gases, most of the dust is usually removed through preliminary processes such as dust removal. However, after the preliminary treatment, the exhaust gas may still carry a certain amount of fine dust when it enters the end-of-line treatment equipment, and mist may also be generated in some treatment stages.

[0003] Existing demisters mostly have flat plates, with only one side in contact with the mist, resulting in a small contact area. In addition, the water droplets condensed on the mist and the plates need to accumulate continuously. Only when the water droplets reach a certain weight will they slide down, making the separation speed of water droplets from the plates slow, resulting in low demisting efficiency. Furthermore, the assembly and disassembly steps are complicated, and the replacement and maintenance speed is slow.

[0004] A search revealed that Chinese Patent CN218794690U discloses a novel high-efficiency demister device used in exhaust gas treatment. This device features a demister plate with excellent demisting effect. The triangular, wave-shaped design of the demister plate increases the contact area between the plate and the exhaust gas, causing the exhaust gas to condense upon contact with the cold air as it passes through multiple layers of filters. The multiple demisting steps achieved by several demister plates effectively enhance the demisting effect and improve efficiency. Simultaneously, the conical protrusions provide excellent guidance, directing water droplets downwards from the demister plate and accelerating their downward flow. Furthermore, the lower and upper extraction plates are inserted into the inner cavity, ensuring the demister plate is securely installed. Replacement is simple; the lower and upper extraction plates are easily removed, simplifying assembly and disassembly, and facilitating rapid maintenance.

[0005] However, in actual use, the existing demister plate is easily clogged by residual fine dust, causing the demister efficiency to drop rapidly, requiring frequent shutdowns for cleaning, which affects the continuity of the entire exhaust gas treatment process. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a demister for demisting the tail end of a high-dust process exhaust gas treatment device, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A demister for demisting the tail end of a high-dust process exhaust gas treatment device includes an outer shell, an inner cavity fixedly disposed inside the outer shell, a connecting cavity fixedly disposed on one side of the inner cavity, a plurality of mounting slots opened inside the outer shell, a mounting frame fixedly disposed inside each of the plurality of mounting slots, and a filter mechanism disposed on one side of the mounting frame.

[0009] The filtration mechanism includes filter screens fixedly installed inside the mounting frame, with the aperture of the multiple filter screens decreasing sequentially. A stabilizing plate is fixedly installed on one side of the outer shell, and a water tank is fixedly installed on the top of the stabilizing plate. A water inlet pipe is provided through the top of the water tank, and a water stop valve is fixedly installed on one side of the water inlet pipe. A water pump is fixedly installed on one side of the water tank, and a delivery pipe is provided through the output end of the water pump. A connecting box is provided through one end of the delivery pipe, and multiple branch water pipes are provided through one side of the connecting box. Multiple nozzles are fixedly installed at one end of each of the multiple branch water pipes. A support ring is fixedly installed on one side of the mounting frame, and one end of each branch water pipe passes through the support ring and extends into the support ring. A fixing groove is provided inside the outer shell, and the branch water pipe is fixedly connected to the fixing groove. A drain outlet is provided on the surface of the support ring.

[0010] By adopting the above technical solution, the filter screen can intercept larger dust particles, reducing the burden on the subsequent demisting mechanism, and can regularly filter the dust on the screen, effectively preventing filter screen blockage, reducing the number of downtime cleanings, and improving the continuity of equipment operation.

[0011] As a further description of the above technical solution: a defogging mechanism is fixedly installed inside the inner cavity. The defogging mechanism includes multiple baffles fixedly installed inside the inner cavity. Fiber bundles are fixedly installed inside each of the multiple baffles. A defogging layer is fixedly installed on the surface of the baffles. The defogging layer is made of a hydrophobic coating.

[0012] By adopting the above technical solution, it is possible to effectively remove mist from the exhaust gas of high-dust processes, ensuring that exhaust gas emissions meet environmental protection requirements, and the operation is convenient and quick.

[0013] As a further description of the above technical solution: a flow channel is provided inside the outer shell, and multiple springs are fixedly installed inside the flow channel. A baffle is fixedly installed at one end of each of the multiple springs. The baffle is in contact with the surface of the baffle plate. A connecting groove is provided inside the outer shell, and a vibration motor is fixedly installed inside the connecting groove. The output end of the vibration motor is connected to the baffle plate.

[0014] By adopting the above technical solution, it is convenient to clean the dust on the surface of the baffle plate, and it is fully automatic, saving time and effort.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] 1. By setting up a filtration mechanism, compared with the existing technology, multiple filter screens are used for preliminary filtration, thereby filtering out both larger particles and smaller dust. The water pump is started periodically to drive the liquid inside the water tank into the branch water pipe through the connection box, and then to the nozzle through the branch water pipe. The nozzle sprays the liquid onto the surface of the filter screen, thereby wetting the dust particles attached to the filter screen and reducing the adhesion between the dust and the filter screen surface. At the same time, multiple nozzles at different angles wash the filter screen, washing the dust particles off the surface of the filter screen. The dust particles then flow into the drainage channel through the drain outlet and are discharged for subsequent treatment.

[0017] 2. By setting up a defogging mechanism, compared with the existing technology, when the airflow passes through the baffle plate, due to the wave shape of the baffle plate and the defogging layer fixedly set on the surface of the baffle plate, which is made of hydrophobic coating, after the fog droplets hit the surface of the baffle plate, the fog will collide with the surface of the baffle plate under the action of inertia and surface tension and condense into water droplets, and part of the fog will be removed. At the same time, fiber bundles are fixedly set inside the baffle plate, which can further capture the fine fog particles after passing through the baffle plate, and the water droplets fall into the interior of the diversion channel, thereby achieving enhanced fog removal. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the filter mechanism of this utility model.

[0021] Figure 4 This is a side view of the filter mechanism of this utility model.

[0022] Figure 5 This is a schematic diagram of the defogging mechanism of this utility model.

[0023] The attached figures are labeled as follows: 1. Outer shell; 2. Inner cavity; 3. Connecting cavity; 4. Mounting frame; 5. Filter screen; 6. Stabilizing plate; 7. Water tank; 8. Inlet pipe; 9. Water pump; 10. Connecting box; 11. Branch pipe; 12. Nozzle; 13. Support ring; 14. Drain outlet; 15. Baffle plate; 16. Fiber bundle; 17. Demisting layer; 18. Drainage channel; 19. Spring; 20. Baffle; 21. Vibration motor. Detailed Implementation

[0024] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] The embodiments disclosed in this application are as follows: Figure 1-5 The demister shown is used for demisting the tail end of a high-dust process exhaust gas treatment equipment. It includes an outer shell 1, an inner cavity 2 is fixedly provided inside the outer shell 1, a connecting cavity 3 is fixedly provided on one side of the inner cavity 2, a plurality of mounting slots are opened inside the outer shell 1, a mounting frame 4 is fixedly provided inside the plurality of mounting slots, and a filter mechanism is provided on one side of the mounting frame 4.

[0026] The filtration mechanism includes filter screens 5 fixedly installed inside the mounting frame 4, with the pore size of multiple filter screens 5 decreasing sequentially. A stabilizing plate 6 is fixedly installed on one side of the outer casing 1, and a water tank 7 is fixedly installed on the top of the stabilizing plate 6. A water inlet pipe 8 is installed through the top of the water tank 7, and a stop valve is fixedly installed on one side of the water inlet pipe 8. A water pump 9 is fixedly installed on one side of the water tank 7, and a delivery pipe is installed through the output end of the water pump 9. A connecting box 10 is installed through one end of the delivery pipe, and multiple branch water pipes 11 are installed through one side of the connecting box 10. Multiple nozzles 12 are fixedly installed at one end of each branch water pipe 11. A support ring 13 is fixedly installed on one side of the mounting frame 4, and one end of the branch water pipe 11 passes through the support ring 13 and extends into the support ring 13. A fixing groove is opened inside the outer casing 1, and the branch water pipe 11 is fixedly connected to the fixing groove. The surface of the support ring 13 has a drain outlet 14. After initial filtration by multiple filter screens 5, both larger and smaller dust particles are filtered out. Then, it is connected to an external water pipe through the water inlet pipe 8. The stop valve is then opened to add water to the water tank 7. The water pump 9 is then periodically started to drive the liquid inside the water tank 7 through the connecting box 10 into the branch water pipe 11. The liquid is then transported to the nozzle 12 through the branch water pipe 11. The nozzle 12 sprays the liquid onto the surface of the filter screen 5, thereby wetting the dust particles attached to the filter screen 5 and reducing the adhesion between the dust and the surface of the filter screen 5. At the same time, multiple nozzles at different angles wash the filter screen 5, washing the dust particles off the surface of the filter screen 5. The dust particles then flow into the drainage channel 18 through the drain outlet 14 and are discharged for subsequent processing.

[0027] Reference Figure 2-3As shown, a demisting mechanism is fixedly installed inside the inner cavity 2. The demisting mechanism includes multiple baffles 15 fixedly installed inside the inner cavity 2. Fiber bundles 16 are fixedly installed inside each baffle 15. A demisting layer 17 is fixedly installed on the surface of the baffle 15. The demisting layer 17 is made of a hydrophobic coating. After preliminary filtration, the exhaust gas continues to enter the demisting mechanism. When the airflow passes through the baffles 15, due to the wavy shape of the baffles 15 and the demisting layer 17 fixedly installed on the surface of the baffles 15, the mist droplets collide with the surface of the baffles 15. Subsequently, due to the hydrophobicity of the coating, the mist droplets are more likely to condense into larger droplets and slide down quickly under the action of gravity, without forming a water film on the surface of the baffle plate 15 to hinder the subsequent impact and separation process of the mist droplets, thus helping to improve the demisting efficiency. The mist impacts the surface of the baffle plate 15 and condenses into water droplets under the action of inertia and surface tension, and some of the mist is removed. At the same time, fiber bundles 16 are fixedly arranged inside the baffle plate 15. The fiber bundles 16 can further capture the fine mist particles after passing through the baffle plate 15, and the water droplets fall into the interior of the drainage channel 18, realizing the enhanced removal of mist.

[0028] Reference Figure 4-5 As shown, the outer casing 1 has a flow channel 18 inside, and multiple springs 19 are fixedly installed inside the flow channel 18. Each of the multiple springs 19 has a baffle 20 fixedly installed at one end. The baffle 20 is in contact with the surface of the baffle plate 15. The outer casing 1 has a connecting groove inside, and a vibration motor 21 is fixedly installed inside the connecting groove. The output end of the vibration motor 21 is connected to the baffle plate 15. The hydrophobic coating has extremely low surface energy, making it difficult for water droplets to spread out on its surface to form a water film. Instead, water droplets will form and roll off quickly. Moreover, dust particles in the exhaust gas flow often carry some water vapor. This characteristic of the hydrophobic coating allows the water droplets formed by the water vapor to carry away some of the dust particles attached to the surface of the baffle plate 15 during the rolling process, playing a certain self-cleaning role and reducing the accumulation of dust on the surface of the baffle plate 15. At the same time, by starting the vibration motor 21, the baffle plate 15 is driven to vibrate, shaking off a small amount of dust that is still attached, which in turn drives the springs 19 to extend and retract, thereby increasing the vibration amplitude and improving the performance.

[0029] Working principle of this utility model:

[0030] This utility model relates to a demister for demisting the tail end of a high-dust process exhaust gas treatment device. In use, one end of the connecting chamber 3 is first connected to the high-dust process exhaust gas section. The exhaust gas enters the inner chamber 2 from the connecting chamber 3 and undergoes preliminary filtration through multiple filter screens 5. The residual dust particles are intercepted by these screens, which have progressively smaller pore sizes, thus pre-filtering both larger and smaller dust particles and improving filtration efficiency. The exhaust gas, after preliminary filtration, continues into the demisting mechanism. When the airflow passes through the baffle plate 15, the wave shape of the baffle plate 15 and the fixed surface of the baffle plate 15 further enhance its effectiveness. The demisting layer 17 is made of a hydrophobic coating. After the fog droplets collide with the surface of the baffle plate 15, due to the hydrophobicity of the coating, the fog droplets are more likely to condense into larger droplets and slide down quickly under the action of gravity, without forming a water film on the surface of the baffle plate 15 to hinder the subsequent collision and separation process of fog droplets, thereby helping to improve the demisting efficiency. The fog collide with the surface of the baffle plate 15 under the action of inertia and surface tension and condenses into water droplets, and part of the fog is removed. At the same time, fiber bundles 16 are fixedly arranged inside the baffle plate 15. The fiber bundles 16 can further capture the fine fog particles after passing through the baffle plate 15, and the water droplets fall into the interior of the drainage channel 18 to achieve enhanced removal of fog.

[0031] During operation, the system first connects to an external water pipe via the inlet pipe 8, then opens the stop valve to add water to the inside of the water tank 7. Next, the water pump 9 is periodically started to drive the liquid inside the water tank 7 through the connection box 10 into the branch water pipe 11, and then delivers it to the nozzle 12 through the branch water pipe 11. The nozzle 12 sprays the liquid onto the surface of the filter screen 5, thereby wetting the dust particles attached to the filter screen 5 and reducing the adhesion between the dust and the surface of the filter screen 5. At the same time, multiple nozzles at different angles wash the filter screen 5, washing the dust particles off the surface of the filter screen 5. The dust particles then flow into the drainage channel 18 through the drain outlet 14 and are discharged for subsequent treatment.

[0032] Furthermore, the hydrophobic coating has extremely low surface energy, making it difficult for water droplets to spread out and form a water film on its surface. Instead, water droplets form and roll off quickly. Moreover, dust particles in the exhaust gas flow are often accompanied by some water vapor. This characteristic of the hydrophobic coating allows the water droplets formed by the water vapor to carry away some of the dust particles attached to the surface of the baffle plate 15 during the rolling process, which plays a certain self-cleaning role and reduces the accumulation of dust on the surface of the baffle plate 15. At the same time, by starting the vibration motor 21, the baffle plate 15 is driven to vibrate, shaking off a small amount of dust that is still attached, which in turn drives the spring 19 to extend and retract, thereby increasing the vibration amplitude and improving the performance.

[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A demister for demisting the tail end of a high-dust process exhaust gas treatment device, comprising a housing (1), characterized in that: The outer shell (1) has an inner cavity (2) fixedly provided inside, and a connecting cavity (3) is fixedly provided on one side of the inner cavity (2). The outer shell (1) has multiple mounting slots, and a mounting frame (4) is fixedly provided inside each of the multiple mounting slots. A filter mechanism is provided on one side of the mounting frame (4). The filtration mechanism includes a filter screen (5) fixedly installed inside the mounting frame (4). The aperture of the multiple filter screens (5) decreases sequentially. A stabilizing plate (6) is fixedly installed on one side of the outer shell (1). A water tank (7) is fixedly installed on the top of the stabilizing plate (6). A water inlet pipe (8) is provided through the top of the water tank (7). A water stop valve is fixedly installed on one side of the water inlet pipe (8). A water pump (9) is fixedly installed on one side of the water tank (7). A delivery pipe is provided through the output end of the water pump (9). A connecting box (10) is provided through one end of the delivery pipe. Multiple branch water pipes (11) are provided through one side of the connecting box (10). Multiple nozzles (12) are fixedly installed at one end of each of the multiple branch water pipes (11). A support ring (13) is fixedly installed on one side of the mounting frame (4).

2. The demister for demisting the tail end of a high-dust process exhaust gas treatment device according to claim 1, characterized in that: One end of the branch pipe (11) passes through the support ring (13) and extends into the support ring (13). A fixing groove is provided inside the outer shell (1). The branch pipe (11) is fixedly connected to the fixing groove. A drain outlet (14) is provided on the surface of the support ring (13).

3. The demister for demisting the tail end of a high-dust process exhaust gas treatment device according to claim 1, characterized in that: The inner cavity (2) is fixedly provided with a defogging mechanism, which includes multiple baffles (15) fixedly provided inside the inner cavity (2), and fiber bundles (16) are fixedly provided inside the multiple baffles (15).

4. The demister for demisting the tail end of a high-dust process exhaust gas treatment device according to claim 3, characterized in that: The surface of the baffle plate (15) is fixedly provided with a demisting layer (17), which is made of a hydrophobic coating.

5. The demister for demisting the tail end of a high-dust process exhaust gas treatment device according to claim 1, characterized in that: The outer shell (1) has a flow channel (18) inside, and multiple springs (19) are fixedly installed inside the flow channel (18). A baffle (20) is fixedly installed at one end of each of the multiple springs (19), and the baffle (20) is in contact with the surface of the baffle plate (15).

6. The demister for demisting the tail end of a high-dust process exhaust gas treatment device according to claim 1, characterized in that: The outer shell (1) has a connecting groove inside, and a vibration motor (21) is fixedly installed inside the connecting groove. The output end of the vibration motor (21) is connected to the baffle plate (15).

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