Dust removal device

Abstract

The invention relates to the technical field of hot splashing slag plants, in particular to a dust removal device. The embodiment of the invention provides a dust removal device which is applied to a hot slag splashing workshop, and a slag pool is arranged in the hot slag splashing workshop. The dust removal device comprises vacuum equipment, a branch pipeline, a dust removal cover assembly and a compressed air speed increasing piece. The dust hood assembly is arranged in the hot slag splashing workshop, and the compressed air speed increasing piece communicates with the branch pipeline and the dust hood assembly. Wherein the vacuum equipment is used for forming negative pressure in the branch pipeline so as to suck dust-containing steam in the hot slag splashing factory building into the dust removal cover assembly, and a cyclone which is the same as the circulating direction of the dust-containing steam in the branch pipeline can be formed in the compressed air speed increasing piece. According to the dust removal device provided by the invention, after dust-containing steam enters the branch pipeline through the dust removal cover assembly, the cyclone generated by the compressed air acceleration piece can effectively improve the fluid speed of the dust-containing steam and reduce the pressure intensity, so that the dust removal effect is improved, and the dust removal capability is enhanced.

Description

Technical Field

[0001] This invention relates to the field of hot slag pouring plant technology, and more particularly to a dust removal device. Background Technology

[0002] The hot slag pouring process generates a large amount of dust, which may contain harmful substances such as metal oxides and silicates. Long-term inhalation of this dust can cause serious damage to workers' respiratory systems. Furthermore, the high temperature of the hot slag pouring plant itself makes the dust more easily dispersed, increasing the risk of workers being exposed to harmful environments. Therefore, dust removal devices are required in hot slag pouring plants. However, current technologies for dust removal in hot slag pouring plants have low efficiency, resulting in generally poor dust removal effects. Summary of the Invention

[0003] This application provides a dust removal device that can improve, to some extent, the technical problem of low dust removal efficiency in hot slag pouring plants, resulting in mediocre dust removal effects.

[0004] This application provides a dust removal device applied in a hot slag pouring plant, wherein the hot slag pouring plant has a slag pool, and the dust removal device includes:

[0005] Vacuum equipment and branch piping;

[0006] A dust removal hood assembly is installed inside the hot slag pouring plant.

[0007] The air compressor speed-increasing component connects the branch pipe and the dust collection hood assembly;

[0008] The vacuum device is used to create a negative pressure in the branch pipe to draw dust-laden steam from the hot slag pouring plant into the dust removal hood assembly. The compressed air speed-increasing component can form an air cyclone with the same flow direction as the dust-laden steam in the branch pipe.

[0009] In some embodiments, the compressed air speed-up component includes a compressed air duct and an air inlet pipe. The compressed air duct connects the branch duct and the dust collector assembly. The side wall of the compressed air duct has a ventilation cavity and a plurality of ventilation holes communicating with the ventilation cavity. One end of the air inlet pipe is connected to the ventilation cavity, and the other end is used to connect to a ventilation source. The plurality of ventilation holes can eject airflow to form an air cyclone with the same flow direction as the dust-laden steam in the branch duct.

[0010] In some embodiments, the plurality of vent holes are evenly distributed along the sidewall of the pipe, and the angle between the central axis of each vent hole and the tangent to the sidewall of the pipe is 40° to 50°.

[0011] In some embodiments, there are multiple slag pools, each slag pool is equipped with a corresponding dust removal device, and the branch pipes of each dust removal device are connected to the main pipe of the hot slag pouring plant. The air inlet pipe is equipped with a first valve.

[0012] Specifically, the first valve opens when the wind speed in the main pipe is greater than that in the branch pipe, and closes when the wind speed in the main pipe is less than that in the branch pipe.

[0013] In some embodiments, the dust removal hood assembly is installed on the top surface of the hot slag pouring plant, the vacuum equipment and branch pipes are located outside the hot slag pouring plant, and the compressed air speed-increasing component passes through the top surface of the hot slag pouring plant.

[0014] In some embodiments, the dust hood assembly includes a dust hood frame and a dust hood body. The dust hood frame is fixedly connected to the top surface of the hot slag pouring plant, and the dust hood body is installed inside the dust hood frame and is connected to the branch pipe.

[0015] In some embodiments, the dust collector hood body includes an outer cover and an inner cover, the inner cover is disposed inside the outer cover, the branch pipe is connected to the inner cover, there is a gap between the outer wall of the inner cover and the inner wall of the outer cover, and the side of the inner cover is provided with a vent.

[0016] In some embodiments, the vents are multiple and are evenly distributed along the circumference of the inner cover.

[0017] In some embodiments, the hot slag pouring plant includes a slag dumping space and a slag transfer space. The hot slag pouring plant also has a brake plate platform located in the slag dumping space and the slag transfer space. Part of the slag pool is located in the slag dumping space and part is located in the slag transfer space. The dust removal device also includes a partition plate, which is disposed between the brake plate platform and the top surface of the hot slag pouring plant to separate the slag dumping space and the slag transfer space.

[0018] In some embodiments, a second valve is provided on the branch pipe, and a third valve for controlling the water injection into the slag pool is provided in the hot slag pouring plant, wherein the second valve and the third valve are opened or closed synchronously.

[0019] The beneficial effects of this application are as follows:

[0020] In the dust removal device provided in this application, since the compressed air speed-increasing component can form an air cyclone in the same direction as the flow of dust-laden steam in the branch pipe, when the dust-laden steam enters the branch pipe through the dust removal hood assembly, the air cyclone generated by the compressed air speed-increasing component can effectively increase the fluid velocity of the dust-laden steam and reduce the pressure, thereby improving the dust removal effect and enhancing the dust removal capacity. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention.

[0022] Figure 1 A partial structural schematic diagram of the hot slag pouring plant is shown.

[0023] Figure 2 It shows Figure 1 A schematic diagram of the structure of the medium-pressure air speed increaser.

[0024] Figure 3 It shows Figure 1 A schematic diagram of the structure of the dust collector hood assembly.

[0025] Figure 4 It shows Figure 3 A schematic diagram of the structure of the dust collector hood frame.

[0026] Figure 5 It shows Figure 3 A schematic diagram of the structure of the dust collector hood.

[0027] Figure 6 It shows Figure 3 A schematic diagram of the structure of the dust collector hood from another perspective.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1-Hot slag pouring plant, 11-Slag dumping space, 12-Slag transfer space, 10-Dust removal device, 20-Slag pool, 30-Plant braking plate platform, 100-Branch pipe, 110-Second valve, 200-Dust hood assembly, 210-Dust hood frame, 211-First frame beam, 212-Second frame beam, 213-Hanging rod, 214-Connecting beam, 220-Dust hood body, 221-Outer cover, 2211-Outer cover panel, 2212-Outer cover frame, 222-Inner cover, 2221-Inner cover panel, 2222-Inner cover frame, 223-Ventilation port, 224-Connecting port, 300-Compressed air speed increaser, 310-Compressed air pipe, 311-Ventilation hole, 320-Inlet pipe, 400-Divider plate. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0031] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0034] Please see Figure 1 This application provides a dust removal device 10, applied in a hot slag pouring plant 1, which includes a slag pool 20. The dust removal device 10 includes a vacuum unit, a branch pipe 100, a dust removal hood assembly 200, and a compressed air speed-increasing component 300. The dust removal hood assembly 200 is located within the hot slag pouring plant 1, and the compressed air speed-increasing component 300 connects the branch pipe 100 and the dust removal hood assembly 200.

[0035] The vacuum equipment is used to create negative pressure in the branch pipe 100 to draw dust-laden steam in the hot slag pouring plant 1 into the dust removal hood assembly 200. The compressed air speed increaser 300 can form an air cyclone with the same flow direction as the dust-laden steam in the branch pipe 100.

[0036] The vacuum equipment is used to create negative pressure within the branch pipe 100. Since the compressed air speed-increasing component 300 connects the branch pipe 100 and the dust collection hood assembly 200, under the action of negative pressure, the dust-laden steam in the hot slag pouring plant 1 can be drawn into the branch pipe 100 for subsequent treatment through the dust collection hood assembly 200. Specifically, the vacuum equipment can be a cyclone dust collector.

[0037] Because the compressed air speed-increasing component 300 can form a cyclone (vortex) in the same direction as the flow of dust-laden steam in the branch pipe 100, the cyclone causes the gas to rotate within the pipe. This rotational motion increases the kinetic energy of the gas, thereby increasing its flow velocity. Therefore, when the dust-laden steam enters the branch pipe 100 through the dust collector assembly 200, the cyclone generated by the compressed air speed-increasing component 300 can effectively increase the flow velocity of the dust-laden steam and reduce its pressure, thereby improving the dust removal effect and enhancing the dust removal capacity.

[0038] Specifically, since the slag pool 20 is located on the bottom surface of the hot slag pouring plant 1, the dust collector hood assembly 200 can be installed on the top surface of the hot slag pouring plant 1 to facilitate the collection of dust-laden steam. The dust collector hood assembly 200 is positioned directly above the slag pool 20, thereby effectively capturing the dust-laden flue gas. The vacuum equipment and branch pipes 100 can be located outside the hot slag pouring plant 1, and the compressed air speed-increasing component 300 passes through the top surface of the hot slag pouring plant 1 to connect the branch pipes 100 and the dust collector hood assembly 200.

[0039] Please see Figure 1 and Figure 2 In some embodiments, the compressed air speed-increasing component 300 includes a compressed air duct 310 and an air inlet pipe 320. The compressed air duct 310 connects the branch pipe 100 and the dust collector assembly 200. The side wall of the compressed air duct 310 has a ventilation cavity and a plurality of ventilation holes 311 communicating with the ventilation cavity. One end of the air inlet pipe 320 is connected to the ventilation cavity, and the other end is used to connect to a ventilation source. The plurality of ventilation holes 311 can eject airflow to form an air cyclone with the same flow direction as the dust-laden steam in the branch pipe 100.

[0040] One end of the compressed air duct 310 is connected to the dust collector assembly 200, and the other end is connected to the branch duct 100. The inlet pipe 320 is connected to the side of the compressed air duct 310. Since the side wall of the compressed air duct 310 has a ventilation cavity and multiple ventilation holes 311 communicating with the ventilation cavity, and one end of the inlet pipe 320 is connected to the ventilation cavity while the other end is used to connect to an external air source, external air can be introduced into the ventilation cavity through the inlet pipe 320, and high-speed airflow can be ejected through the ventilation holes 311, thereby forming an air cyclone. The compressed air duct 310 can be connected to the dust collector assembly 200 and the branch duct 100 respectively via flanges.

[0041] Specifically, multiple vent holes 311 are evenly distributed along the side wall of the pipe, and the angle α between the central axis of each vent hole 223 and the tangent of the side wall of the pipe is 40° to 50°. Due to the tilt angle design of the vent holes 311, the cyclone has a specific direction and speed, which can significantly increase the fluid velocity at the branch pipe 100.

[0042] Furthermore, since multiple vent holes 311 are evenly distributed along the side wall of the pipe, in order to ensure that each vent hole 311 ejects airflow at the same time and increases the speed of forming vortex, two air inlet pipes 320 can be provided, with the two air inlet pipes 320 located on both sides of the compressed air pipe 310.

[0043] In some embodiments, there are multiple slag pools 20, and each slag pool 20 is equipped with a corresponding dust removal device 10. The branch pipes 100 of each dust removal device 10 are connected to the main pipe of the hot slag pouring plant 1. The air inlet pipe 320 is equipped with a first valve. When the wind speed in the main pipe is greater than the wind speed in the branch pipe 100, the first valve is opened, and when the wind speed in the main pipe is less than the wind speed in the branch pipe 100, the first valve is closed.

[0044] Each hot slag pouring plant 1 has multiple slag pools 20 that simultaneously process converter slag. Since each slag pool 20 generates a large amount of dust-laden steam, each slag pool 20 requires a corresponding dust removal device 10 to collect the dust-laden steam from the area surrounding it. The hot slag pouring plant 1 has a main pipeline, and the branch pipelines 100 of each dust removal device 10 are connected to this main pipeline. The main pipeline and each branch pipeline 100 together constitute the dust removal pipeline. Vacuum equipment can create negative pressure in the main pipeline, thereby creating negative pressure in each branch pipeline 100.

[0045] When the air velocity in the main duct is greater than that in the branch duct 100, it indicates that the air volume in the branch duct 100 is insufficient and sufficient suction needs to be provided to the branch duct 100. At this time, the air compressor speed-up device 300 (i.e., the first valve) needs to be opened to further increase the fluid velocity in the branch duct 100 and enhance the dust removal capacity. Conversely, if the air velocity in the main duct is less than or equal to that in the branch duct 100, it indicates that the air volume in the branch duct 100 has reached the limit of the system's dust removal capacity. At this time, the air compressor speed-up device 300 (i.e., the first valve) needs to be closed to avoid unnecessary energy consumption and equipment damage.

[0046] Specifically, an anemometer is installed in the main pipeline and each branch pipeline 100. The dust removal device 10 also includes a controller, which is connected to each anemometer and the first valve. Each anemometer transmits its detection signal to the controller, which then determines whether to open or close each air compressor 300 based on the wind speed value. This wind speed monitoring and control method can dynamically adjust the operating status of the dust removal device 10 according to the actual situation, effectively improving the efficiency and stability of the system.

[0047] Please see Figure 1 and Figure 3 In some embodiments, the dust hood assembly 200 includes a dust hood frame 210 and a dust hood body 220. The dust hood frame 210 is fixedly connected to the top surface of the hot slag pouring plant 1, and the dust hood body 220 is installed inside the dust hood frame 210 and is connected to the branch pipe 100.

[0048] Please see Figure 4 The dust collector frame 210 is the mounting component of the dust collector body 220. The dust collector frame 210 includes two first frame beams 211, two second frame beams 212, multiple hangers 213, and multiple connecting beams 214. The two first frame beams 211 and the two second frame beams 212 form a rectangular frame, on which the dust collector body 220 is mounted. The multiple connecting beams 214 are used to connect to the top surface of the hot slag pouring plant 1. The multiple connecting beams 214 are spaced apart along the length of the second frame beams 212. The multiple connecting beams 214 are connected to the first frame beams 211 or the second frame beams 212 through multiple hangers 213, that is, multiple hangers 213 are evenly distributed on the first frame beams 211 or the second frame beams 212.

[0049] In terms of strength calculations, it must be ensured that the three suspension rods 213 at any position on each side are capable of bearing the entire load of the dust collector hood body 220 and the aforementioned rectangular frame, and that the effective stress-bearing section of the rods can still operate stably even under 40% corrosion. To adapt to the special environment of dust-containing steam in the hot slag pouring production line, the entire dust collector hood frame 210 is rust-removed and painted before installation, using fluorocarbon paint with good anti-corrosion properties.

[0050] In addition, color plates can be fixed around the dust collector frame 210. In this way, the color plates will isolate the external steam from the dust collector body 220 of the dust collector frame 210, thereby preventing the steam from directly corroding the dust collector body 220.

[0051] Please see Figure 5 and Figure 6In some embodiments, the dust collector hood body 220 includes an outer cover 221 and an inner cover 222. The inner cover 222 is disposed inside the outer cover 221. The branch pipe 100 is connected to the inner cover 222. There is a gap between the outer wall of the inner cover 222 and the inner wall of the outer cover 221. The side of the inner cover 222 is provided with a vent 223.

[0052] When gas (dust-laden steam in this application) flows through the channel between the inner shroud 222 and the outer shroud 221, the gas velocity increases due to changes in the channel's shape (such as the opening design of the inner shroud 222). According to Bernoulli's principle, as fluid velocity increases, its static pressure decreases, thus creating a low-pressure area between the inner shroud 222 and the outer shroud 221. Meanwhile, the surrounding environment (such as the area above the slag pool 20 where dust-laden steam is generated) has a relatively high air pressure. Under the influence of this pressure difference, the dust-laden steam is adsorbed into the channel between the inner shroud 222 and the outer shroud 221, and then collected into the branch pipe 100. This effect allows the dust collector shroud 220 to capture dust-laden steam more efficiently, improving the overall dust collection capacity of the dust collection structure. It plays a crucial role in the dust collection device 10, helping to improve the cleanliness of the production environment, reduce dust emissions, and ensure the environmental friendliness of the production process and the health of workers.

[0053] Specifically, there are multiple vents 223, which are evenly distributed around the circumference of the inner cover 222 to ensure that the gas can enter the inner cover 222 evenly and flow into the branch pipe 100, avoiding excessively strong or weak local airflow.

[0054] Please see Figure 5 and Figure 6 The outer cover 221 includes an outer cover panel 2211 and an outer cover frame 2212. The outer cover panel 2211 can be welded together from four steel plates to form a unique inverted funnel-shaped flue gas collection hood. The geometric center of the hood body precisely coincides with the maximum position of steel slag accumulation in the slag pool 20. Considering that some areas of the slag pool 20 do not generate dust-laden flue gas in the steel slag transfer span, the corresponding geometric dimensions of the outer cover 221 in the steel slag dumping span are consistent with those of the slag pool 20 below. The height of the outer cover 221 is set to the distance between the overhead crane and the roof panel. This design can effectively collect dust-laden flue gas in a single dust collection hood, and its dust removal capacity is four times that of existing dust removal fans.

[0055] The inner cover 222 also includes an inner cover panel 2221 and an inner cover frame 2222. The inner cover panel 2221 is also composed of four steel plates forming an inverted funnel shape. The inner cover frame 2222, composed of shaped steel, is fitted onto the inner cover panel 2221, effectively enhancing the overall strength of the inner cover 222. The four steel plates are tightly connected by welding, and each side has two vents 223, which can be rectangular. Through a clever design, a pressure and gas velocity difference is generated between the inner cover 222 and the outer cover 221, utilizing the Venturi effect to smoothly collect the dust-laden vapor inside the dust collector hood into the dust collection device 10. The outer cover frame 2212 is located on the outside of the outer cover panel 2211, which not only effectively improves the strength of the outer cover 221 itself but also further reduces the impact of corrosion on the structure. The outer cover 221 has a communication port 224 for communicating with the compressed air speed-increasing component 300. The inner cover 222 is connected inside the outer cover 221 and communicates with the communication port 224, so that the dust-laden flue gas can enter the branch pipe 100 through the inner cover 222.

[0056] The installation of the dust collector unit includes two processes: center of gravity calculation and lifting point setting, and hoisting. The center of gravity calculation and lifting point setting process is as follows: SolidWorks software is used for overall modeling and assembly to accurately determine the coordinates of the assembly's center of gravity. On the ground (assembly site), a plane parallel to the ground and coinciding with the center is selected based on the calculated center of gravity coordinates. Four perfectly symmetrical lifting points are then selected on this plane, intersecting with the outer casing 221, to install lifting lugs (see attached diagram). Figure 6 (The lifting point positions should be understood from the perspective of the overall structure.) Simultaneously, the strength of the lifting rings and lifting equipment should be carefully calculated based on the actual situation to ensure safety and reliability during the lifting process. In this process, the assembly experience of similar equipment can be referenced. For example, during the installation and maintenance of boiler baghouse dust collectors, when assembling the dust collector hopper, middle housing, air inlet duct, airflow regulating valve, etc., on the ground, alignment and welding are also required. Furthermore, the lifting sequence and sufficient installation space must be fully considered to ensure the smooth progress of the installation work.

[0057] The hoisting process for the dust collector body is as follows: A suitable crawler crane is selected for the hoisting operation. The crawler crane has good mobility and can accurately enter directly above the slag pool 20 in the slag dumping span after crossing the slag transfer span (without affecting the normal production operation of the slag dumping span). During the hoisting process, the connecting beam 214 is first brought into initial contact with the top surface of the hot slag pouring plant 1. Then, the distance between the first frame beam 211 and the second frame beam 212 is gradually and finely adjusted using a chain hoist (the two first frame beams 211 have been pre-fixed between two adjacent steel columns inside the hot slag pouring plant 1). After the connecting beam 214 and the mounting bolt hole positions on the top surface of the hot slag pouring plant 1, as well as the first frame beam 211 and the second frame beam 212 are precisely aligned, reinforcement welding is performed.

[0058] Please see Figure 1 In some embodiments, the hot slag pouring plant 1 includes a steel slag dumping space 11 and a steel slag transfer space 12. The hot slag pouring plant 1 also has a brake plate platform located in the steel slag dumping space 11 and the steel slag transfer space 12. Part of the slag pool 20 is located in the steel slag dumping space 11 and part is located in the steel slag transfer space 12. The dust removal device 10 also includes a partition plate 400, which is disposed between the brake plate platform and the top surface of the hot slag pouring plant 1 to separate the steel slag dumping space 11 and the steel slag transfer space 12.

[0059] The plant brake platform 30 is typically located above the crane beam, between two adjacent steel columns, and is primarily used to distribute the lateral braking force and impact force generated during crane operation. The plant brake platform 30 is directly installed on the upper flange of the crane beam, spanning between the steel columns, and connected to the brake truss to form a horizontal support system. The plant brake platform is an existing component within the hot slag pouring plant 1; its installation location and working principle will not be described further here.

[0060] During the operation of the hot slag pouring plant 1, the slag dumping space 11 generates a large amount of dust-laden steam during the hot slag pouring and watering process, while the slag transfer space 12 does not generate dust-laden steam during normal production. Therefore, the dust removal device 10 is installed in the slag dumping space 11. In related technologies, the slag dumping space 11 and the slag transfer space 12 are connected. However, in this embodiment, the partition plate 400 is installed between the brake plate platform and the top surface of the hot slag pouring plant 1 to separate the slag dumping space 11 and the slag transfer space 12. That is, the partition plate 400 physically isolates these two areas, making the area where the dust removal device 10 collects dust-laden steam more concentrated, effectively avoiding the capture of wind, and thus significantly improving the utilization rate of the dust removal device 10. This layout plays a key role in the initial screening and guidance of dust-laden airflow in the overall structure.

[0061] Specifically, the partition plate 400 includes steel columns, purlins, purlin tie rods, and galvanized profiled steel sheets. The steel columns are securely connected to the brake plate platform and the top surface of the hot slag pouring plant 1 by welding to ensure the stability of the overall structure. The purlins are fixedly connected to the steel columns to enhance the overall integrity of the structure. The purlin tie rods are connected to the purlins by bolts to further reinforce the structure. The galvanized profiled steel sheets are fixed to the purlins using color-coated steel nails.

[0062] In some embodiments, a second valve 110 is provided on the branch pipe 100, and a third valve for controlling the water pumping of the slag pool 20 is provided in the hot slag pouring plant 1. The second valve 110 and the third valve are opened or closed synchronously.

[0063] Each hot slag pouring plant 1 contains multiple slag pools 20 that simultaneously process converter slag. The workflow consists of four steps: slag pouring, water injection, extraction, and standby. During the water injection process, the intense reaction between water and converter slag generates a large amount of dust-laden steam. Therefore, handling this dust-laden steam is a key focus of dust removal in the hot slag pouring plant 1. A second valve 110 is installed on the branch pipe 100, and a third valve within the hot slag pouring plant 1 controls the water injection into the slag pools 20. Since the second and third valves open and close synchronously, when the third valve opens and water injection begins in the slag pool 20, the second valve 110 also opens, causing the dust removal device 10 to start operating. When water injection ends and the third valve closes, the second valve 110 also closes, stopping the dust removal operation.

[0064] Specifically, the switching signals of the second valve 110 and the third valve are interlocked through the controller, thereby synchronously triggering the dust removal system to start working.

[0065] The second valve 110 can be a pneumatic valve. When the second valve 110 is closed, the raft plate remains parallel to the ground; when open, it is perpendicular to the ground. The second valve 110 only has open, close, and fully open / fully closed signal functions. This design ensures that the branch dust collection pipes at both ends of the second valve 110 are perpendicular to the ground, effectively preventing dust accumulation in the branch pipes 100 from affecting the opening and closing of the second valve 110. The ends of the branch pipes 100 are also perpendicular to the ground to prevent dust accumulation in the branch pipes 100 from affecting the normal opening and closing of the second valve 110. This design ensures the stable operation of the dust collection device 10 and significantly reduces the probability of malfunctions caused by dust accumulation.

[0066] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0067] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A dust removal device, applied in a hot slag pouring plant, characterized in that, The hot slag pouring plant has a slag pool, and the dust removal device includes: Vacuum equipment and branch piping; A dust removal hood assembly is installed inside the hot slag pouring plant. The air compressor speed-increasing component connects the branch pipe and the dust collection hood assembly; The vacuum device is used to create a negative pressure in the branch pipe to draw dust-laden steam from the hot slag pouring plant into the dust removal hood assembly. The compressed air speed-increasing component can form an air cyclone with the same flow direction as the dust-laden steam in the branch pipe.

2. The dust removal device according to claim 1, characterized in that, The compressed air speed-increasing component includes a compressed air duct and an air inlet pipe. The compressed air duct connects the branch duct and the dust collector assembly. The side wall of the compressed air duct has a ventilation cavity and multiple ventilation holes communicating with the ventilation cavity. One end of the air inlet pipe is connected to the ventilation cavity, and the other end is used to connect to a ventilation source. The multiple ventilation holes can eject airflow to form an air cyclone with the same flow direction as the dust-laden steam in the branch duct.

3. The dust removal device according to claim 2, characterized in that, The plurality of vent holes are evenly distributed along the sidewall of the pipe, and the angle between the central axis of each vent hole and the tangent of the sidewall of the pipe is 40° to 50°.

4. The dust removal device according to claim 2, characterized in that, The slag pool has multiple pools, and each slag pool is equipped with a corresponding dust removal device. The branch pipes of each dust removal device are connected to the main pipe of the hot slag pouring plant. The air inlet pipe is equipped with a first valve. Specifically, the first valve opens when the wind speed in the main pipe is greater than that in the branch pipe, and closes when the wind speed in the main pipe is less than that in the branch pipe.

5. The dust removal device according to any one of claims 1-4, characterized in that, The dust removal hood assembly is installed on the top surface of the hot slag pouring plant, the vacuum equipment and branch pipes are located outside the hot slag pouring plant, and the compressed air speed-increasing component passes through the top surface of the hot slag pouring plant.

6. The dust removal device according to any one of claims 1-4, characterized in that, The dust removal hood assembly includes a dust removal hood frame and a dust removal hood body. The dust removal hood frame is fixedly connected to the top surface of the hot slag pouring plant, and the dust removal hood body is installed inside the dust removal hood frame. The dust removal hood body is connected to the branch pipe.

7. The dust removal device according to claim 6, characterized in that, The dust collector hood body includes an outer cover and an inner cover. The inner cover is disposed inside the outer cover. The branch pipe is connected to the inner cover. There is a gap between the outer wall of the inner cover and the inner wall of the outer cover. The side of the inner cover is provided with a vent.

8. The dust removal device according to claim 7, characterized in that, The ventilation openings are multiple and are evenly distributed along the circumference of the inner cover.

9. The dust removal device according to any one of claims 1-4, characterized in that, The hot slag pouring plant includes a steel slag dumping space and a steel slag transfer space. The hot slag pouring plant also has a brake plate platform located in the steel slag dumping space and the steel slag transfer space. Part of the slag pool is located in the steel slag dumping space and part is located in the steel slag transfer space. The dust removal device also includes a partition plate, which is set between the brake plate platform and the top surface of the hot slag pouring plant to separate the steel slag dumping space and the steel slag transfer space.

10. The dust removal device according to any one of claims 1-4, characterized in that, The branch pipeline is equipped with a second valve, and the hot slag pouring plant has a third valve for controlling the water pumping in the slag pool. The second valve and the third valve open or close synchronously.

Images