A special steel smelting smoke exhaust device

Abstract

The utility model discloses a kind of special steel smelting smoke exhaust device, comprising: air inlet pipe, air inlet pipe is sequentially installed with first processing mechanism, communicating pipe, second processing mechanism, exhaust fan, cloth bag dust collector from left to right, above-mentioned structure is formed completed air flow passage at air inlet pipe, since exhaust fan, cloth bag dust collector are existing equipment, so do not carry on too much repetition, the first processing mechanism is composed of box, mounting plate, air outlet pipe, shunt pipe, air supply pipe, the front end face middle part of the box is equipped with mounting port, the utility model provides a kind of special steel smelting smoke exhaust device to solve the existing mode can complete above-mentioned work, but also exist due to merely rely on expansion air flow area makes wind speed slow down, particle sandstone in flue gas cannot better drop collection, part of particle still can be affected by wind speed to cloth bag dust collector and cause damage, it is not conducive to actual work use.

Description

Technical Field

[0001] This utility model relates to the field of smoke exhaust equipment technology, and in particular to a smoke exhaust device for special steel smelting. Background Technology

[0002] The smelting process of special steel generates a large amount of flue gas, which contains various pollutants such as sulfur dioxide (SO2) and nitrogen oxides (NOx). x The primary purpose of fume extraction devices is to collect and treat pollutants such as particulate matter, reducing their direct emission into the atmosphere, thereby lowering environmental pollution and protecting the surrounding air quality and ecological environment. For example, in areas with high environmental quality requirements, such as special steel smelting plants near cities or ecologically sensitive areas, effective fume extraction devices can ensure that smelting activities meet strict environmental protection standards. The fumes generated from special steel smelting may contain some flammable and explosive gas components, such as carbon monoxide (CO). Fume extraction devices can promptly discharge these fumes from the smelting workshop to prevent their accumulation and thus avoid safety accidents such as explosions. At the same time, the fume extraction process also helps to control the temperature and gas concentration in the workshop, providing workers with a relatively safe working environment.

[0003] In the utility model patent with patent publication number CN212902697U, the temperature of the high-temperature flue gas is reduced by pre-cooling, which extends the service life of the bag filter. The pre-dust removal removes large particles of sand and gravel from the flue gas, preventing the bag filter from being punctured by large particles of sand and gravel. Although this method can accomplish the above work, it also has the disadvantage that, by simply increasing the airflow area to slow down the wind speed, the particles of sand and gravel in the flue gas cannot fall and be collected better. Some particles will still be affected by the wind speed and cause damage to the bag filter, which is not conducive to actual operation.

[0004] Therefore, it is necessary to provide a flue gas exhaust device for special steel smelting to solve the above-mentioned technical problems. Utility Model Content

[0005] In response to the above situation and to overcome the defects of the existing technology, this utility model provides a special steel smelting flue gas exhaust device. Although the existing method can accomplish the above work, it also has the problem that by simply increasing the airflow area to slow down the wind speed, the particles and gravel in the flue gas cannot fall and be collected better, and some particles will still be affected by the wind speed, causing damage to the bag filter, which is not conducive to actual work.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A smoke exhaust device for special steel smelting includes: an air inlet pipe;

[0008] The air inlet pipe is equipped with a first processing mechanism, a connecting pipe, a second processing mechanism, an exhaust fan, and a bag filter from left to right. The above structure forms a complete airflow channel at the air inlet pipe. Since the exhaust fan and bag filter are existing equipment, they will not be described in detail. The first processing mechanism consists of a housing, a mounting plate, an air outlet pipe, a diversion pipe, and an air supply pipe. The front end of the housing has an installation port in the middle. The mounting plate is installed in the installation port by bolts. The air outlet pipe is installed in the mounting plate. Multiple air outlet pipes are spaced apart. The air outlet pipes are inclined downwards. The front end of the air outlet pipe is connected to the diversion pipe. The middle of the other end of the diversion pipe is connected to an external air supply fan through the air supply pipe.

[0009] In one embodiment, a waste discharge port is provided at the front end of the inner bottom of the box, and a guide plate is installed on the rear inner end face of the box. The guide plate is in the shape of a wedge block, with the bottom of its inclined surface above the waste discharge port and its inclined surface facing the air outlet of the air outlet pipe.

[0010] In one embodiment, a collection plate is installed at the bottom of the waste discharge port. The collection plate is generally a frustum-shaped structure with a narrow opening at the bottom. A collection box is installed at the bottom of the collection plate, and a sealing door is installed on the end face of the collection box.

[0011] In one embodiment, a sealing gasket is installed between the mounting plate and the housing, and the sealing gasket is embedded on both sides. A one-way valve is installed between the diversion pipe and the air supply pipe.

[0012] In one embodiment, the second processing mechanism comprises a processing box, a cooling pipe, a water inlet, a drain, and a collection box. The water inlet is installed on the top of the processing box and the drain is installed on the bottom. Both the water inlet and the drain are equipped with electrically controlled valves. A cooling pipe is installed between the water inlet and the drain. Multiple cooling pipes are arranged in a rectangular array and pass through the processing box. The two are connected by welding. A collection box is installed at the bottom of the processing box, and a processing port is opened on the bottom surface of the collection box.

[0013] The beneficial effects of this utility model are as follows:

[0014] (1) This utility model supplies low-temperature air to the air supply pipe by starting an external fan. The air is diverted from the diversion pipe into multiple outlet pipes and blown towards the inside of the box through the outlet pipes. Since the outlet pipes are located in the horizontal section of the box, after the flue gas enters the box through the inlet pipe, it is blown by the horizontal wind of the outlet pipes. With the cooperation of the slow flow in the box space, some particles in the flue gas are blown towards the inner wall of the box. Some particles fall due to their own weight. At the same time, the low-temperature air can also preliminarily cool the high-temperature flue gas. In the process of removing particles, the whole device can also cool the high-temperature flue gas, improve functionality and practicality.

[0015] (2) After the flue gas is treated by the first processing mechanism, the flue gas enters the processing box through the connecting pipe. By closing the valve at the drain end, external low-temperature water is injected into the cooling pipe in advance. After filling, the valve at the water inlet end is closed, so that the flue gas comes into contact with the cooling pipe and achieves a cooling effect. After the flue gas comes into contact with the cooling pipe, the impurities contained in the flue gas collide with the pipe wall of the cooling pipe and fall into the collection box below, further improving the treatment effect of cooling and removing impurities from the flue gas and further improving the practicality of the overall device. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the present invention;

[0017] Figure 2 This is a detailed view of the disassembled components of this utility model;

[0018] Figure 3 This is a detailed drawing of the first processing mechanism of this utility model;

[0019] Figure 4 This is a detailed drawing of the second processing mechanism of this utility model.

[0020] The corresponding names of the attached figures are: air inlet pipe 1, first processing mechanism 2, box 21, waste outlet 22, collection plate 23, collection box 24, guide plate 25, mounting plate 26, air outlet pipe 27, diversion pipe 28, air supply pipe 29, connecting pipe 3, second processing mechanism 4, processing box 41, cooling pipe 42, water inlet end 43, drain end 44, collection box 45, exhaust fan 5, bag filter 6. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0022] like Figures 1-2 As shown, the present invention provides a smoke exhaust device for special steel smelting, comprising: an air inlet pipe 1;

[0023] like Figures 1-3As shown, the air inlet pipe 1 is sequentially equipped with a first processing mechanism 2, a connecting pipe 3, a second processing mechanism 4, an exhaust fan 5, and a bag filter 6 from left to right. This structure forms a complete airflow channel at the air inlet pipe 1. Since the exhaust fan 5 and the bag filter 6 are existing equipment, they will not be described in detail. The first processing mechanism 2 consists of a housing 21, a mounting plate 26, an air outlet pipe 27, a diversion pipe 28, and an air supply pipe 29. An installation port is provided in the center of the front end face of the housing 21, and the mounting plate 26 is installed in the installation port using bolts. Multiple air outlet pipes 27 are installed within the mounting plate 26, and each air outlet pipe 27 is arranged at intervals and inclined downwards. The front end of each air outlet pipe 27 is connected to the diversion pipe 28. The other end is connected to an external air supply fan via an air supply pipe 29. During operation, the external air supply fan is activated to supply low-temperature air to the air supply pipe 29. The air is diverted from the diversion pipe 28 into multiple outlet pipes 27 and blown into the housing 21 through the outlet pipes 27. Since the outlet pipes 27 are located in the transverse section of the housing 21, after the flue gas enters the housing 21 through the inlet pipe 1, it is blown by the transverse airflow of the outlet pipes 27. With the help of the slow flow in the space of the housing 21, some particles in the flue gas are blown towards the inner wall of the housing 21. Some particles fall due to their own weight. At the same time, the low-temperature air can also preliminarily cool the high-temperature flue gas. Thus, the whole device can cool the high-temperature flue gas while removing particles, improving functionality and practicality.

[0024] Preferably, in one embodiment, such as Figures 2-3 As shown, a waste discharge port 22 is provided at the front end of the inner bottom of the box 21, and a guide plate 25 is installed on the rear inner end face of the box 21. The guide plate 25 is in the shape of a wedge block, with its bottom slope positioned above the waste discharge port 22 and its slope facing the air outlet of the air outlet pipe 27.

[0025] Preferably, in one embodiment, such as Figures 2-3 As shown, a collection plate 23 is installed at the bottom of the waste discharge port 22. The collection plate 23 is a frustoconical structure with a narrow opening at the bottom. A collection box 24 is installed at the bottom of the collection plate 23. A sealing door is installed on the end face of the collection box 24. During operation, particles falling through the air outlet 27 are affected by the inclined surface of the guide plate 25 and roll into the waste discharge port 22 and enter the collection box 24. After accumulating for a period of time, the collection box 24 is cleaned by opening the sealing door.

[0026] Preferably, in one embodiment, a sealing gasket is installed between the mounting plate 26 and the housing 21, and the sealing gasket is embedded on both sides. A one-way valve is installed between the diversion pipe 28 and the air supply pipe 29.

[0027] Preferably, in one embodiment, such as Figure 4 As shown, the second processing mechanism 4 consists of a processing tank 41, a cooling pipe 42, a water inlet 43, a drain 44, and a collection box 45. The water inlet 43 is installed above the processing tank 41, and the drain 44 is installed below it. Both the water inlet 43 and the drain 44 are equipped with electrically controlled valves. A cooling pipe 42 is installed between the water inlet 43 and the drain 44. Multiple cooling pipes 42 are arranged in a rectangular array and penetrate the processing tank 41, being connected by welding. A collection box 42 is installed at the bottom of the processing tank 41. The device has a processing port. During operation, the flue gas is treated by the first processing mechanism 2 and then enters the processing box 41 through the connecting pipe 3. By closing the valve of the drain end 44, external low-temperature water is pre-filled into the cooling pipe 42. After filling, the valve of the water inlet end 43 is closed, so that the flue gas comes into contact with the cooling pipe 42 and achieves a cooling effect. After the flue gas comes into contact with the cooling pipe 42, the impurities contained in the flue gas collide with the pipe wall of the cooling pipe 42 and fall into the collection box 45 below, further improving the treatment effect of cooling and removing impurities from the flue gas and further improving the practicality of the overall device.

[0028] Working principle of this utility model:

[0029] During operation, an external fan supplies low-temperature air to the air supply duct 29. The air is then diverted from the distribution duct 28 into multiple outlet ducts 27, and blown towards the interior of the housing 21. Since the outlet ducts 27 are located in the transverse section of the housing 21, after the flue gas enters the housing 21 through the inlet duct 1, it is blown by the transverse airflow from the outlet ducts 27. Combined with the reduced airflow within the housing 21, this causes some particles in the flue gas to be blown towards the inner wall of the housing 21, while others fall due to their own weight. Simultaneously, the low-temperature outside air provides initial cooling to the high-temperature flue gas, thus enhancing the overall particle removal process. In addition, it can also cool high-temperature flue gas, improve functionality and practicality. After the flue gas is treated by the first treatment mechanism 2, the flue gas enters the treatment box 41 through the connecting pipe 3. By closing the valve of the drain end 44, external low-temperature water is injected into the cooling pipe 42 in advance. After filling, the valve of the water inlet end 43 is closed, so that the flue gas comes into contact with the cooling pipe 42 and achieves a cooling effect. After the flue gas comes into contact with the cooling pipe 42, the impurities contained in the flue gas collide with the pipe wall of the cooling pipe 42 and fall into the collection box 45 below, further improving the treatment effect of cooling and removing impurities from the flue gas and further improving the practicality of the overall device.

[0030] The above embodiments are merely one of the preferred embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any modifications or refinements made to the main design concept and spirit of this utility model that are not of substantial significance, but solve the same technical problem as this utility model, should be included within the scope of protection of this utility model.

Claims

1. A flue gas exhaust device for special steel smelting, characterized in that, include: Intake pipe; The air inlet pipe is equipped with a first processing mechanism, a connecting pipe, a second processing mechanism, an exhaust fan, and a bag filter from left to right. The above structure forms a complete airflow channel at the air inlet pipe. The first processing mechanism consists of a housing, a mounting plate, an air outlet pipe, a branch pipe, and a supply pipe. The front end of the housing has an installation port in the middle, and the mounting plate is installed in the installation port by bolts. The air outlet pipe is installed in the mounting plate. Multiple air outlet pipes are spaced apart and are inclined downwards. The front end of the air outlet pipe is connected to the branch pipe, and the other end of the branch pipe is connected to an external air supply fan through the supply pipe.

2. The flue gas exhaust device for special steel smelting according to claim 1, characterized in that, The inner bottom front end of the box is provided with a waste discharge port, and the inner rear end face of the box is equipped with a guide plate. The guide plate is in the shape of a wedge block, with the bottom of its inclined surface above the waste discharge port and its inclined surface facing the air outlet of the air outlet pipe.

3. The flue gas exhaust device for special steel smelting according to claim 2, characterized in that, A collection plate is installed at the bottom of the waste discharge port. The collection plate is a frustum-shaped structure with a narrow opening at the bottom. A collection box is installed at the bottom of the collection plate, and a sealing door is installed on the end face of the collection box.

4. The flue gas exhaust device for special steel smelting according to claim 1, characterized in that, A sealing gasket is installed between the mounting plate and the housing. The sealing gasket is embedded on both sides. A one-way valve is installed between the diversion pipe and the air supply pipe.

5. The flue gas exhaust device for special steel smelting according to claim 1, characterized in that, The second processing unit consists of a processing box, cooling pipes, a water inlet, a drain, and a collection box. The water inlet is installed on the top of the processing box and the drain is installed on the bottom. Both the water inlet and the drain are equipped with electrically controlled valves. A cooling pipe is installed between the water inlet and the drain. Multiple cooling pipes are arranged in a rectangular array and pass through the processing box. The two are connected by welding. A collection box is installed at the bottom of the processing box, and a processing port is opened on the bottom surface of the collection box.

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