An explosion-proof steel plant dust sampling and filtering integrated device

Abstract

The present application relates to the technical field of steel smelting, and particularly relates to a dust sampling and filtering integrated device for explosion-proof steel plant. The technical scheme comprises a supporting frame, a filtering structure, a power structure, a light detection structure, a sampling structure, a collecting structure and a self-cleaning structure, the lower end of the filtering structure is connected with the collecting structure, the input end of the filtering structure is connected with the light detection structure, the inside of the collecting structure is provided with an ash cleaning assembly, the inside of the filtering structure is provided with a filtering assembly, the self-cleaning of the filtering assembly and the ash cleaning assembly are driven by the power structure, and the sampling structure samples in the input end of the cleaning structure by suction based on the power structure. The power structure links all components, reduces energy consumption, can self-adaptively adjust sampling and filtering parameters, improves sampling representativeness and filtering efficiency, has the functions of explosion-proof and self-cleaning, does not need to stop production for ash cleaning, guarantees continuous production, and realizes dust environmental protection, energy saving and efficient treatment.

Description

Technical Field

[0001] This invention relates to the field of iron and steel smelting technology, and in particular to an explosion-proof integrated dust sampling and filtration device for steel plants. Background Technology

[0002] Steel mill dust is generated throughout the entire steel production process, primarily originating from material crushing, high-temperature reactions, melting and cooling, and mechanical operations. The characteristics of dust generated in different production processes vary significantly, specifically across the entire chain from sintering, ironmaking, steelmaking, to rolling. Steel mill dust is multi-dimensional and highly destructive. Combining its high temperature, high viscosity, heavy metal content, and flammability and explosiveness, the dust contains large amounts of SiO2, manganese dust, zinc fumes, and heavy metals such as Pb and Cd. Long-term inhalation can lead to various occupational diseases. Steel mill dust is mostly combustible; when its concentration in a confined space reaches the explosion limit, it can explode upon encountering high temperatures, static sparks, or mechanical friction sparks, causing equipment damage and personal injury. Simultaneously, dust accumulation on electrical equipment and pipe surfaces increases the risk of short circuits and overheating, further exacerbating explosion hazards. Furthermore, high-temperature dust can also trigger secondary combustion, expanding the scope of safety accidents.

[0003] Currently, most dust sampling and filtration devices in steel plants are designed separately, with sampling and filtration occurring asynchronously, which can easily lead to dust leakage and pose an explosion hazard. Existing devices consume a lot of energy, with each structure powered independently and failing to achieve coordinated operation. Cleaning the filtration structure requires shutdown and disassembly, affecting production continuity and resulting in high maintenance costs. Furthermore, the devices have poor adaptability, unable to flexibly adjust sampling and filtration parameters according to dust concentration and particle size, leading to insufficient sample representativeness, low filtration efficiency, and low dust recovery and utilization rates, often relying on landfill disposal, which is both environmentally unfriendly and wasteful of resources, failing to meet the explosion-proof, high-efficiency, and environmentally friendly production requirements of steel plants. Therefore, those skilled in the art have proposed an explosion-proof integrated dust sampling and filtration device for steel plants to address the problems mentioned in the background. Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the background art by proposing an explosion-proof integrated dust sampling and filtration device for steel plants.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an explosion-proof integrated dust sampling and filtration device for steel plants, comprising a support frame, a filter structure, a power structure, a light detection structure, a sampling structure, a collection structure, and a self-cleaning structure. The filter structure is installed on the upper end of the support frame and is distributed in two groups. The lower end of the filter structure is connected to the collection structure. The input end of the filter structure is connected to the light detection structure. A dust removal component is installed inside the collection structure. A filter component is installed inside the filter structure. The self-cleaning of the filter component and the operation of the dust removal component are both driven by the power structure. The sampling structure, powered by the power structure, samples through suction inside the input end of the cleaning structure.

[0006] Preferably, the filtration structure includes a filter box, a primary delivery pipe, a filter element, and an input pipe. The filter boxes are arranged in two symmetrical groups. One end of the input pipe is connected to a side pipe, and both ends of the side pipe penetrate the two groups of filter boxes. A three-way valve is installed at the connection between the side pipe and the input pipe. An exhaust shaft is rotatably installed inside the primary delivery pipe, and blades arranged in a ring array are sleeved on the outer wall of the exhaust shaft. The three-way valve regulates the opening and closing of the two side pipes. When the exhaust shaft rotates, it drives the blades to generate a delivery airflow to transport the filtered gas.

[0007] Preferably, the filter element is fixed inside the filter box by a cylindrical grid frame, and a support ring connected to the inner wall of the filter box is provided at the upper end of the cylindrical grid frame. A gas conveying area and a dust removal and discharge area are formed on the outer side of the cylindrical grid frame and below the support ring. The filter element is supported by the grid frame and connected to the filter box by the support ring. The gas conveying area and the dust removal and discharge area formed on the outer side of the cylindrical grid frame and below the support ring ensure that gas passes through the filter element during conveying and that intercepted objects are effectively removed during filter element cleaning.

[0008] Preferably, the primary delivery pipe further delivers the pre-treated gas, and a connecting pipe connects the primary delivery pipe to the upper end of the filter box. A solenoid valve is installed inside the connecting pipe. The primary delivery pipe further delivers the filtered gas, and the solenoid valve controls the opening and closing of the connecting pipe.

[0009] Preferably, the optical detection structure includes a side box and a second side tube. The second side tube is connected to both ends of the input tube, and the side box is connected to both ends of the second side tube. The side box contains a corresponding optical emitting module and an optical inspection module. Each of the second side tubes contains a regulating valve. The optical emitting module emits detection light, which passes through the dust-laden gas inside the input tube and is then detected by the optical inspection module.

[0010] Preferably, the collection structure includes an ash hopper and a conveyor shaft. A discharge pipe connects the ash hopper to the filter box, and a solenoid valve is installed inside the discharge pipe. A storage chamber is located inside the lower end of the ash hopper. The ash hopper stores ash and solids intercepted by the filter element, and the opening and closing of the discharge pipe is controlled by the solenoid valve.

[0011] Preferably, a winch shaft is rotatably mounted inside the lower end of the storage chamber, and a winch blade rotatably mounted inside the lower end of the storage chamber is sleeved on the outer wall of the winch shaft. Multiple sets of relatively distributed flow-guiding baffles are provided on the inner wall of the storage chamber. The flow-guiding baffles guide the falling ash and solids intercepted by the filter element, and the multiple sets of flow-guiding baffles reduce the airflow during the gas filtration process, preventing the suction airflow from directly affecting the inside of the storage tank. The winch shaft rotates, driving the winch blades to transport the ash and solids intercepted by the filter element.

[0012] Preferably, the self-cleaning structure includes a first cleaning pipe, a second cleaning pipe, and an arched pipe. One end of the first cleaning pipe is connected to a diversion pipe located behind the filter structure. Both ends of the diversion pipe pass through the cleaning box and are connected to spray pipes. Spray holes are provided on the outer wall of each spray pipe. One end of the second cleaning pipe is provided with an arched pipe that passes through the second side pipe. The lower end of the side box is connected to a U-shaped pipe. A bottom connecting pipe connects the U-shaped pipe and the first side pipe, and a control valve is installed inside the bottom connecting pipe. The first and second cleaning pipes distribute and act on the second side pipe, the side box, and the filter element, using the airflow drawn and delivered by the pump casing for cleaning. The control valve controls the opening and closing of the bottom connecting pipe.

[0013] Preferably, the power structure includes a motor, a rotating shaft, and a pump casing. The motor output end has a rotating shaft rotatably mounted inside the pump casing and passing through the suction end of the pump casing. An impeller rotatably mounted inside the pump casing is sleeved on the outer wall of the rotating shaft. An air supply pipe is provided at the pump casing output end. Two cleaning pipes, namely cleaning pipe one and cleaning pipe two, are connected to the air supply pipe, and a three-way valve two is provided at the connection point. Synchronous pulleys are sleeved on the outer walls of both the exhaust shaft and the rotating shaft, and belts are sleeved on the outer walls of the synchronous pulleys. The motor drives the rotating shaft to rotate, and through the linkage between the synchronous pulleys and belts, the exhaust shaft rotates.

[0014] Preferably, a driven wheel is sleeved on the outer wall of the winch shaft, and a drive wheel with a radius smaller than the driven wheel is sleeved on the outer wall of the exhaust shaft. Both the drive wheel and the driven wheel are fitted with a second belt. A mounting seat for motor support and shaft rotation support is provided at the upper end of the support frame. The sampling structure includes a suction pipe connecting the pump casing suction end and the input pipe. The suction pipe has an outlet at the bottom controlled by a valve assembly and a collection cylinder containing a filter screen. The air delivery shaft drives the drive wheel to rotate, and through the deceleration of the second belt and the driven shaft, the winch shaft rotates. The airflow drawn by the pump casing is drawn through the suction pipe, and ash and solids are intercepted by the filter screen, thereby achieving sampling of the gas inside the input pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention inputs dust- and solid-laden gas generated during steel plant production. Two sets of filter structures can be opened individually or in pairs depending on the flow rate and purification pressure. The filter elements can be self-cleaned by airflow jet cleaning. The gas entering at the input end is periodically detected by a photodetector structure. A regulating valve controls the opening and closing of the detection channel, and the self-cleaning structure cleans the internal space of the photodetector structure after the detection is closed. Simultaneously, the gas inside the input end is sampled periodically. The cleaned ash and solids are collected in an ash hopper. The cleaning inside the ash hopper, the generation of the clean airflow, the generation of the sampling suction airflow, and the power for transporting the pre-purified gas are all driven by a motor and linked by a power structure, reducing energy consumption and realizing distributed sampling and filtration integration, providing an energy-efficient and high-performance solution for dust treatment in steel plants. Attached Figure Description

[0016] Figure 1 This is a front-view three-dimensional structural schematic diagram of the present invention; Figure 2 This is a rear-view three-dimensional structural diagram of the present invention; Figure 3 This is a top-view perspective view of the filter structure of the present invention. Figure 4 This is a side sectional three-dimensional structural diagram of the ash hopper of the present invention; Figure 5 This is a three-dimensional structural schematic diagram of the main cross-section of the filter box of the present invention; Figure 6 This is a front-view perspective three-dimensional structural diagram of the filter box of the present invention; Figure 7 This is a top-view perspective view of the self-cleaning structure of the present invention. Figure 8 For the present invention Figure 7 A schematic diagram of the three-dimensional structure viewed from below; Figure 9 This is a top-section three-dimensional structural diagram of the pump casing of the present invention; Figure 10 This is a side view of the three-dimensional structure of belt one and belt two of the present invention.

[0017] Figure label: 100. Support frame; 200. Filter structure; 201. Filter box; 202. Primary delivery pipe; 203. Connecting pipe; 204. Discharge pipe; 205. Filter element; 206. Side pipe one; 207. Three-way valve one; 208. Inlet pipe; 209. Exhaust shaft; 210. Blade; 300. Power structure; 301. Motor; 302. Shaft; 303. Impeller; 304. Belt 1; 305. Synchronous pulley; 306. Drive wheel; 307. Driven wheel; 308. Belt 2; 309. Pump casing; 310. Air delivery pipe; 311. Three-way valve 2; 312. Mounting base; 400. Optical detection structure; 401. Side box; 402. Side tube two; 403. Regulating valve; 500. Sampling structure; 501. Suction tube; 502. Collection tube; 600. Collection structure; 601. Ash hopper; 602. Flow guide baffle; 603. Storage cavity; 604. Grinding blade; 605. Grinding shaft; 700. Self-cleaning structure; 701. Cleaning pipe one; 702. Diverter pipe; 703. Spray pipe; 704. Cleaning pipe two; 705. Arched pipe; 706. U-shaped pipe; 707. Bottom connecting pipe; 708. Control valve. Detailed Implementation

[0018] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1 to 10 The present invention provides three embodiments:

[0020] Example 1: An explosion-proof integrated dust sampling and filtration device for steel plants includes a support frame 100, a filter structure 200, a power structure 300, a light detection structure 400, a sampling structure 500, a collection structure 600, and a self-cleaning structure 700. The filter structure 200 is installed on the upper part of the support frame 100 and is distributed in two groups. The lower end of the filter structure 200 is connected to the collection structure 600. The input end of the filter structure 200 is connected to the light detection structure 400. A dust removal component is installed inside the collection structure 600. A filter component is installed inside the filter structure 200. The operation of the self-cleaning and dust removal components of the filter components is driven by the power structure 300. The sampling structure 500 uses the power structure 300 as its power source to sample through suction inside the input end of the cleaning structure.

[0021] The filter structure 200 includes a filter box 201, a primary delivery pipe 202, a filter element 205, and an input pipe 208. The filter boxes 201 are arranged in two symmetrical groups. One end of the input pipe 208 is connected to a side pipe 206. The two ends of the side pipe 206 are distributed through the two groups of filter boxes 201. A three-way valve 207 is provided at the connection between the side pipe 206 and the input pipe 208. An exhaust shaft 209 is rotatably installed inside the primary delivery pipe 202. The outer wall of the exhaust shaft 209 is fitted with blades 210 arranged in a ring array.

[0022] The filter element 205 is fixed inside the filter box 201 by a cylindrical grid frame, and a support ring connected to the inner wall of the filter box 201 is provided at the upper end of the cylindrical grid frame. A gas conveying area and a dust removal and discharge area are formed on the outer side of the cylindrical grid frame and below the support ring.

[0023] The primary delivery pipe 202 further delivers the pre-treated gas. The primary delivery pipe 202 is connected to the upper end of the filter box 201 by a connecting pipe 203, and a solenoid valve is installed inside the connecting pipe 203.

[0024] In this embodiment, firstly, the filter structure 200 of the device is installed on the upper end of the support frame 100 and adopts a two-set symmetrical distribution design. This two-set distribution is mainly to deal with different dust concentrations in steel plants. When the dust concentration is low, only one set of filter structure 200 can be turned on to save energy. When the dust concentration is high, both sets of filter structures 200 are turned on at the same time to improve filtration efficiency and avoid overloading of a single filter structure 200, which could lead to incomplete filtration or equipment damage.

[0025] The core components of the filter structure 200 include a filter box 201, a primary conveying pipe 202, a filter element 205, and an input pipe 208. The filter box 201 is the main site for dust filtration. Two sets of filter boxes 201 are symmetrically installed on the support frame 100 to ensure uniform force distribution and to ensure that dust-laden gas is evenly distributed to the two sets of filter boxes 201, thus improving filtration stability. The input pipe 208 is the channel for dust-laden gas to enter the filter structure 200. Dust-laden gas generated during steel plant production is transported to the filter structure 200 through the input pipe 208. To achieve flexible control of the two sets of filter boxes 201, a side pipe 206 is connected to one end of the input pipe 208. Both ends of the side pipe 206 pass through the two sets of filter boxes 201, meaning that the side pipe 206 connects the input pipe 208 to the two sets of filter boxes 201, allowing dust-laden gas to enter any one or both sets of filter boxes 201 through the side pipe 206. At the connection between the side pipe 206 and the input pipe 208, a three-way valve 207 is installed. The function of this three-way valve 207 is very critical. The operator can control the opening and closing of the side pipe 206 by adjusting the three-way valve 207, thereby controlling which set of filter boxes 201 the dust-laden gas enters, or whether it enters two sets of filter boxes 201 at the same time. This design can be flexibly adjusted according to the actual dust concentration, improving the adaptability and energy efficiency of the device.

[0026] Filter element 205 is the core component for filtering dust and directly determines the filtration efficiency. In this embodiment, filter element 205 is fixed inside the filter box 201 by a cylindrical grid frame. The cylindrical grid frame is made of corrosion-resistant and high-temperature-resistant material, which can adapt to the high-temperature and highly corrosive dust-laden gas environment of steel plants and avoid damage after long-term use. At the upper end of the cylindrical grid frame, a support ring is provided. The support ring is tightly connected to the inner wall of the filter box 201, which serves to fix the cylindrical grid frame and filter element 205, ensuring that the filter element 205 will not shake or shift during the filtration process, thus ensuring the stability of filtration. At the same time, the outer side of the cylindrical grid frame and the lower part of the support ring form a shared area for the gas conveying area and the dust removal and discharge area. The design of these two areas realizes the separation of gas conveying and filter element 205 dust removal.

[0027] The gas conveying zone is mainly used for filtering dust-laden gas through filter element 205. After entering the filter box 201, the dust-laden gas enters the gas conveying zone and is then filtered by filter element 205, which traps the dust on its surface. The purified gas then passes through filter element 205 and enters the upper part of the filter box 201. The dust removal and discharge zone is used to collect the dust that falls off during the dust removal process of filter element 205. When too much dust accumulates on the surface of filter element 205, affecting the filtration efficiency, the dust removal component will be activated to blow off the dust from the surface of filter element 205. The blown-off dust will fall into the dust removal and discharge zone and then be collected by the subsequent collection structure 600. This design ensures that the dust removal process does not affect the normal filtration of the gas and also ensures that the dust can be discharged smoothly, avoiding accumulation inside the filter box 201 and causing safety hazards.

[0028] The primary delivery pipe 202 further transports the purified gas, after preliminary treatment in the filter box 201, to subsequent processing stages or for direct discharge, ensuring that the purified gas can be discharged smoothly and avoiding accumulation inside the filter box 201, which would affect the normal operation of the device. A connecting pipe 203 connects the primary delivery pipe 202 to the upper end of the filter box 201. An electromagnetic valve is installed inside the connecting pipe 203. This electromagnetic valve controls the opening and closing of the connecting pipe 203, thereby controlling whether the purified gas in the filter box 201 enters the primary delivery pipe 202.

[0029] When the device is operating normally, the solenoid valve is in the open state. The purified gas filtered by the filter element 205 in the filter box 201 enters the primary delivery pipe 202 through the connecting pipe 203. When maintenance or dust removal of the filter box 201 is required, the operator can close the solenoid valve to disconnect the filter box 201 from the primary delivery pipe 202, preventing gas leakage or dust from entering the primary delivery pipe 202. Inside the primary delivery pipe 202, an exhaust shaft 209 is rotatably installed. The outer wall of the exhaust shaft 209 is fitted with blades 210 arranged in a ring array. When the exhaust shaft 209 rotates, it drives the blades 210 to rotate as well. During the rotation of the blades 210, a delivery airflow is generated. This airflow can promote the rapid flow of purified gas in the primary delivery pipe 202, improve the efficiency of gas delivery, ensure that the purified gas can be discharged in time, and at the same time prevent purified gas from stagnating inside the primary delivery pipe 202, reducing the risk of pipe blockage.

[0030] Dust-laden gas enters through inlet pipe 208, is regulated by three-way valve 207, and enters designated filter box 201 through side pipe 206. In the gas conveying area of ​​filter box 201, it is filtered by filter element 205, and dust is intercepted on the surface of filter element 205. The purified gas enters the upper part of filter box 201 and enters primary conveying pipe 202 through connecting pipe 203. Exhaust shaft 209 drives blades 210 to rotate and generate airflow, further conveying the purified gas, completing the initial filtration and gas conveying process. The whole process is simple and easy to understand, and the various components cooperate with each other to ensure stable and efficient filtration.

[0031] Example 2: The optical detection structure 400 includes a side box 401 and a second side tube 402. The second side tube 402 is connected to both ends of the input tube 208, and the side box 401 is connected to both ends of the second side tube 402. The side box 401 is equipped with a corresponding optical emission module and an optical inspection module. The second side tube 402 is equipped with a regulating valve 403.

[0032] The collection structure 600 includes an ash hopper 601 and a winch shaft 605. The ash hopper 601 is connected to the filter box 201 by a discharge pipe 204. Each discharge pipe 204 is equipped with a solenoid valve. The lower end of the ash hopper 601 is equipped with a storage chamber 603.

[0033] A winch shaft 605 is rotatably mounted inside the lower end of the storage cavity 603. A winch piece 604 is rotatably mounted inside the lower end of the storage cavity 603 and sleeved on the outer wall of the winch shaft 605. Multiple sets of relatively distributed guide baffles 602 are provided on the inner wall of the storage cavity 603.

[0034] In this embodiment, the optical detection structure 400 is the core structure in the device used to detect the dust concentration and particle size related parameters of the dust-laden gas. It is directly connected to the input pipe 208 of the filter structure 200 and can detect the state of the dust-laden gas before entering the filter structure 200 in real time, providing data support for the subsequent adjustment of the filter structure 200 and the sampling of the sampling structure, and avoiding overload of the filter structure 200 or unrepresentative sampling. The core components of the optical detection structure 400 include a side box 401 and a second side tube 402. The second side tube 402 is the channel through which dust-laden gas enters the optical detection structure 400. Both ends of the second side tube 402 are directly connected to the two ends of the input tube 208. In other words, the second side tube 402 and the input tube 208 form a parallel channel. After the dust-laden gas enters the input tube 208, part of it enters the second side tube 402 and is detected by the optical detection structure 400, while the other part directly enters the first side tube 206 and enters the filter box 201 for filtration. This design enables real-time detection of dust-laden gas without affecting the normal operation of the filter structure 200. At each end of the second side tube 402, there is a side box 401 connected. The two side boxes 401 are symmetrically distributed at both ends of the second side tube 402, forming a corresponding relationship to ensure the accuracy of detection.

[0035] Inside the side box 401, there are corresponding light emitting modules and light inspection modules. These two modules are the core working components of the light detection structure 400. They work together to complete the detection of dust-laden gas. The function of the light emitting module is to emit stable detection light. This detection light can penetrate the dust-laden gas inside the side tube 402. When the detection light shines on the dust particles in the dust-laden gas, light scattering occurs. The light inspection module is responsible for receiving the light signal after it has been scattered by the dust particles. By analyzing parameters such as the intensity and polarization characteristics of the light signal, it determines key information such as the dust concentration and particle size in the dust-laden gas. This detection data is fed back to the control module of the device in real time, providing a basis for subsequent filtration and sampling adjustments. Meanwhile, a regulating valve 403 is installed inside each side tube 2 402. The function of this regulating valve 403 is to control the opening and closing of the side tube 2 402 and the gas flow. The operator can adjust the opening of the regulating valve 403 according to the actual detection needs to control the flow of dust-laden gas entering the side tube 2 402. When detection is not required, the regulating valve 403 can be closed to prevent dust from entering the side box 401 and causing blockage or damage to the light emission module and the light inspection module, thus extending the service life of the light detection structure 400. The operation process of the light detection structure 400 is very simple. When the device is started, the light emission module begins to emit detection light, the regulating valve 403 opens, and the dust-laden gas enters the side tube 2 402 through the input pipe 208. The detection light penetrates the dust-laden gas, is scattered by the dust particles, and is received by the light inspection module. The light inspection module converts the light signal into an electrical signal and transmits it to the control module to complete one detection. The entire process is carried out in real time to ensure that the status of the dust-laden gas can be grasped in a timely manner.

[0036] The collection structure 600 is a core structure used to collect dust that falls off after filtration by the filter structure 200 and dust that may remain in the light detection structure 400. It is directly connected to the lower end of the filter structure 200, which can collect the dust in a concentrated manner, avoid dust accumulation inside the device and prevent explosion hazards, and also facilitate the subsequent recycling of dust. The core components of the collection structure 600 include a dust hopper 601 and a winch shaft 605. The dust hopper 601 is the main container for dust collection. The upper end of the dust hopper 601 is connected to the lower end of the filter box 201 through a discharge pipe 204. Each filter box 201 corresponds to a discharge pipe 204. Inside each discharge pipe 204, there is a solenoid valve. The function of this solenoid valve is to control the opening and closing of the discharge pipe 204. When the dust inside the filter box 201 accumulates to a certain amount, or when dust removal is required, the operator can open the solenoid valve to allow the dust inside the filter box 201 to fall into the dust hopper 601 through the discharge pipe 204. When dust removal is not required, the solenoid valve is closed to prevent the dust in the dust hopper 601 from flowing back into the filter box 201, which would affect the filtration efficiency. It also prevents dust leakage and ensures the explosion-proof safety of the device.

[0037] Inside the lower end of the ash hopper 601, there is a storage chamber 603, which is the main storage area for dust. Dust falling into the ash hopper 601 from the filter box 201 will accumulate in the storage chamber 603, facilitating subsequent cleaning and recycling. Inside the lower end of the storage chamber 603, a winch shaft 605 is rotatably installed. A winch blade 604 is sleeved on the outer wall of the winch shaft 605 and is also rotatably installed inside the lower end of the storage chamber 603. The winch shaft 605 and the winch blade 604 work together to slowly transport the dust in the storage chamber 603 to the outlet of the ash hopper 601, facilitating cleaning by staff and preventing dust from accumulating and clogging inside the storage chamber 603.

[0038] Meanwhile, multiple relatively distributed baffles 602 are provided on the inner wall of the storage chamber 603. The function of these baffles 602 is to guide the falling dust, so that the dust can be evenly accumulated in the storage chamber 603, avoiding excessive local accumulation of dust. At the same time, the baffles 602 can also reduce the suction airflow generated during the filtration process, preventing the suction airflow from directly acting on the inside of the storage chamber 603, causing the dust in the storage chamber 603 to be re-raised, causing secondary pollution or affecting the dust collection effect.

[0039] After the filter element 205 in the filter box 201 intercepts dust, when dust removal is required, the dust removal component is activated, blowing the dust off the surface of the filter element 205 and causing it to fall into the dust removal discharge area at the bottom of the filter box 201. At this time, the operator opens the solenoid valve on the discharge pipe 204, and the dust falls into the storage chamber 603 of the ash hopper 601 through the discharge pipe 204. The guide baffle 602 guides the dust to make it accumulate evenly. The winch shaft 605 rotates and drives the winch blades 604 to slowly transport the dust in the storage chamber 603 to the outlet, which is convenient for the staff to clean regularly. The whole process works in coordination with the filter structure 200 and the dust removal component to ensure that the dust can be collected in a timely and safe manner, avoiding the accumulation of dust that may cause safety hazards, and also laying the foundation for the recycling of dust.

[0040] Example 3: The self-cleaning structure 700 includes a first cleaning pipe 701, a second cleaning pipe 704, and an arched pipe 705. One end of the first cleaning pipe 701 is connected to a diversion pipe 702 located behind the filter structure 200. Both ends of the diversion pipe 702 pass through the cleaning box and are connected to spray pipes 703. The outer wall of the spray pipes 703 is provided with spray holes. One end of the second cleaning pipe 704 is provided with an arched pipe 705 that passes through the second side pipe 402. The lower end of the side box 401 is connected to a U-shaped pipe 706. A bottom pipe 707 is connected between the U-shaped pipe 706 and the first side pipe 206. A control valve 708 is provided inside the bottom pipe 707.

[0041] The power structure 300 includes a motor 301, a rotating shaft 302, and a pump housing 309. The output end of the motor 301 is provided with a rotating shaft 302 that is rotatably installed inside the pump housing 309 and passes through the suction end of the pump housing 309. An impeller 303 that is rotatably installed inside the pump housing 309 is sleeved on the outer wall of the rotating shaft 302. An air supply pipe 310 is provided at the output end of the pump housing 309. The first cleaning pipe 701 and the second cleaning pipe 704 are both connected to the air supply pipe 310, and a three-way valve 311 is provided at the connection. The exhaust shaft 209 and the outer wall of the rotating shaft 302 are both sleeved with synchronous pulleys 305, and the outer wall of the synchronous pulleys 305 is sleeved with belts 304.

[0042] The outer wall of the winch shaft 605 is fitted with a driven wheel 307, and the outer wall of the exhaust shaft 209 is fitted with a drive wheel 306 with a radius smaller than that of the driven wheel 307. Both the drive wheel 306 and the driven wheel 307 are fitted with belts 308. The upper end of the support frame 100 is provided with a mounting seat 312 for supporting the motor 301 and the rotating shaft 302. The sampling structure 500 includes a suction pipe 501 that connects the suction end of the pump casing 309 and the input pipe 208. The suction pipe 501 has a discharge port at the bottom that is controlled by a valve assembly and a collection cylinder 502 with a filter screen inside.

[0043] In this embodiment, the power structure 300 replaces the independent power supply mode of each structure in the traditional device, reducing energy consumption and realizing the linkage control of each structure. The core components of the power structure 300 include an explosion-proof motor 301, a drive shaft, and a linkage gear set. The explosion-proof motor 301 is the core component of power output. It adopts an explosion-proof structure design, which fully complies with the dust explosion prevention standards of steel plants. It can prevent the generation of electric sparks during the operation of the motor 301, and prevent the ignition of combustible dust inside the device, thus preventing the explosion hazard. At the same time, the explosion-proof motor 301 uses a high-temperature resistant and corrosion-resistant shell material, which can adapt to the high-temperature, high-dust, and high-corrosion production environment of steel plants, and extend the service life of the power structure 300.

[0044] The explosion-proof motor 301 is installed on one side of the device support frame 100. It is connected to the primary delivery pipe 202 of the filter structure 200, the winch shaft 605 of the collection structure 600, and the sampling pump of the sampling structure through a transmission structure, ensuring that power can be evenly transmitted to each component that requires power. The transmission shaft is the main channel for power transmission. One end is fixedly connected to the output end of the explosion-proof motor 301, and the other end is connected to the exhaust shaft 209 inside the primary delivery pipe 202, the winch shaft 605 of the collection structure 600, and the drive shaft of the sampling pump through a linkage gear set. The linkage gear set adopts an explosion-proof sealing design and is coated with an anti-dust adhesion coating to prevent dust from accumulating in the gear gaps, causing gear wear and jamming, and affecting the stability of power transmission.

[0045] Meanwhile, sealed bearings are installed at the connection points between the drive shaft and each component. The function of the sealed bearings is to enhance the sealing of the connection points, prevent dust from entering the connection gaps and causing component wear, and also reduce friction during power transmission, improve power transmission efficiency, and reduce energy consumption. The operation process of the power structure 300 is very simple. When the device is started, the operator starts the explosion-proof motor 301 through the control structure. The explosion-proof motor 301 starts running and transmits power to the drive shaft. The drive shaft transmits power to the exhaust shaft 209, the conveying shaft 605, and the sampling pump drive shaft through the linkage gear set, driving these components to operate synchronously. This provides stable power for the gas delivery of the filter structure 200, the dust conveying of the collection structure 600, and the sampling of the sampling structure. At the same time, the speed of the explosion-proof motor 301 can be adjusted through the control structure, thereby adjusting the operating speed of each component to adapt to the needs of different dust concentrations and different production scenarios. For example, when the dust concentration is high, the speed of the explosion-proof motor 301 can be increased to improve the sampling flow rate, filtration efficiency, and dust conveying speed, ensuring that the device can handle dust-laden gas and dust in a timely manner.

[0046] The core components of the control structure include an explosion-proof control cabinet, a control motherboard, a touch screen display, and a wireless transmission module. The explosion-proof control cabinet is installed on one side of the device and is connected to the explosion-proof motor 301, various sensors, solenoid valves, regulating valves 403, and other components via explosion-proof wiring. The explosion-proof control cabinet adopts an explosion-proof shell design, and all internal wiring is explosion-proof sealed to prevent short circuits from generating electrical sparks and causing explosion hazards. At the same time, the explosion-proof control cabinet is equipped with an emergency stop button. When the device malfunctions, the operator can immediately press the emergency stop button to cut off the power supply to the entire device, stop the operation of all components, and prevent the safety accident from escalating.

[0047] The control motherboard is the core of the control structure, installed inside the explosion-proof control cabinet. It is equivalent to the brain of the device. It can receive dust concentration and particle size detection data from the optical detection structure 400, differential pressure detection data from the filter structure 200, dust and liquid level detection data from the collection structure 600, and detection data from sensors such as temperature, pressure, and oxygen concentration. After analyzing and processing this data, it automatically issues control commands to adjust the speed of the explosion-proof motor 301, the opening and closing of the solenoid valve, and the opening degree of the regulating valve 403, so as to realize the coordinated operation of various structures.

[0048] The touch screen is installed on the surface of the explosion-proof control cabinet and adopts an explosion-proof sealed design. Operators can manually set the operating parameters of the device through the touch screen, such as sampling flow rate, filtration efficiency, dust cleaning interval time, dust emission threshold, etc. At the same time, the touch screen will display the operating status and detection data of each structure in real time, such as dust concentration, motor speed 301, solenoid valve on / off status, etc., so that operators can intuitively grasp the operating status of the device.

[0049] The wireless transmission module is installed on the control motherboard and can transmit the device's operating data and detection data to the factory's central control system and the operator's mobile APP in real time, realizing remote monitoring and remote control. Operators do not need to be on-site and can check the device's operating status in real time from the central control room or via their mobile phones. When the device malfunctions, the wireless transmission module will transmit alarm signals to the operator in real time to remind the operator to handle the situation promptly.

[0050] The coordinated operation process of the control structure and other structures is as follows: After the device is started, the control structure automatically activates the photodetector 400 to detect the dust concentration and particle size of the dust-laden gas in real time. The detection data is transmitted to the control main board. After analysis, the control main board automatically adjusts the sampling flow rate of the sampling pump and the filter media combination mode of the filter structure 200. At the same time, the power structure 300 is activated to drive the operation of each component. When the pressure difference of the filter structure 200 reaches the set threshold, the control main board automatically activates the dust removal component to perform self-cleaning operation. At the same time, the solenoid valve of the collection structure 600 is opened to transport the cleaned dust to the dust hopper 601. The winch shaft 605 rotates synchronously to transport the dust to the outlet. When dust concentration approaches the explosion limit, temperature is too high, or oxygen concentration is abnormal, the control board immediately issues an audible and visual alarm, adjusts the speed of the explosion-proof motor 301, reduces the sampling flow rate, activates the inert gas protection system, and cuts off the power supply if necessary to stop the device operation and ensure safety. Operators can view data and adjust parameters in real time through the touch screen or mobile APP, realizing intelligent and convenient operation of the device. The entire process requires minimal human intervention, which improves operational efficiency and ensures the explosion-proof safety of the device. In conjunction with the structures of the previous two embodiments, it constitutes a complete explosion-proof integrated dust sampling and filtration device for steel plants.

[0051] The above specific embodiments are merely several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0052] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An explosion-proof integrated dust sampling and filtration device for steel plants, comprising a support frame (100), a filtration structure (200), a power structure (300), a light detection structure (400), a sampling structure (500), a collection structure (600), and a self-cleaning structure (700), characterized in that: The filter structure (200) is installed on the upper end of the support frame (100) and is distributed in two groups. The lower end of the filter structure (200) is connected to the collection structure (600). The input end of the filter structure (200) is connected to the light detection structure (400). The collection structure (600) is equipped with a dust removal component. The filter structure (200) is equipped with a filter component. The self-cleaning of the filter component and the operation of the dust removal component are both driven by the power structure (300). The sampling structure (500) uses the power structure (300) as the power basis to sample inside the input end of the cleaning structure by suction.

2. The explosion-proof integrated dust sampling and filtration device for steel plants according to claim 1, characterized in that: The filter structure (200) includes a filter box (201), a primary delivery pipe (202), a filter element (205), and an input pipe (208). The filter boxes (201) are arranged in two symmetrical groups. One end of the input pipe (208) is connected to a side pipe (206). The two ends of the side pipe (206) are distributed through the two groups of filter boxes (201). A three-way valve (207) is provided at the connection between the side pipe (206) and the input pipe (208). An exhaust shaft (209) is rotatably installed inside the primary delivery pipe (202). The outer wall of the exhaust shaft (209) is fitted with blades (210) arranged in a ring array.

3. The explosion-proof integrated dust sampling and filtration device for steel plants according to claim 2, characterized in that: The filter element (205) is fixed inside the filter box (201) by a cylindrical grid frame, and a support ring connected to the inner wall of the filter box (201) is provided at the upper end of the cylindrical grid frame. A gas conveying area and a dust removal and discharge area are formed on the outer side of the cylindrical grid frame and below the support ring.

4. The explosion-proof integrated dust sampling and filtration device for steel plants according to claim 2, characterized in that: The primary delivery pipe (202) further delivers the pre-treated gas. The primary delivery pipe (202) is connected to the upper end of the filter box (201) by a connecting pipe (203), and a solenoid valve is installed inside the connecting pipe (203).

5. The explosion-proof integrated dust sampling and filtration device for steel plants according to claim 2, characterized in that: The optical detection structure (400) includes a side box (401) and a second side tube (402). The second side tube (402) is connected to both ends of the input tube (208). The side box (401) is connected to both ends of the second side tube (402). The side box (401) is equipped with a corresponding optical emission module and an optical inspection module. The second side tube (402) is equipped with a regulating valve (403).

6. The explosion-proof integrated dust sampling and filtration device for steel plants according to claim 2, characterized in that: The collection structure (600) includes an ash hopper (601) and a winch shaft (605). The ash hopper (601) is connected to the filter box (201) by a discharge pipe (204). The discharge pipe (204) is equipped with a solenoid valve. The lower end of the ash hopper (601) is equipped with a storage chamber (603).

7. The explosion-proof integrated dust sampling and filtration device for steel plants according to claim 6, characterized in that: The storage cavity (603) is rotatably mounted with a winch shaft (605) inside the lower end. The winch shaft (605) is sleeved with a winch piece (604) rotatably mounted inside the lower end of the storage cavity (603). The inner wall of the storage cavity (603) is provided with multiple sets of relatively distributed guide baffles (602).

8. The explosion-proof integrated dust sampling and filtration device for steel plants according to claim 5, characterized in that: The self-cleaning structure (700) includes a first cleaning pipe (701), a second cleaning pipe (704), and an arched pipe (705). One end of the first cleaning pipe (701) is connected to a diversion pipe (702) located behind the filter structure (200). Both ends of the diversion pipe (702) pass through the cleaning box and are connected to a spray pipe (703). The outer wall of the spray pipe (703) is provided with spray holes. One end of the second cleaning pipe (704) is provided with an arched pipe (705) that passes through the second side pipe (402). The lower end of the side box (401) is connected to a U-shaped pipe (706). The U-shaped pipe (706) and the first side pipe (206) are connected by a bottom pipe (707). The bottom pipe (707) is provided with a control valve (708).

9. The explosion-proof integrated dust sampling and filtration device for steel plants according to claim 8, characterized in that: The power structure (300) includes a motor (301), a rotating shaft (302), and a pump casing (309). The output end of the motor (301) is provided with a rotating shaft (302) that is rotatably installed inside the pump casing (309) and passes through the suction end of the pump casing (309). An impeller (303) that is rotatably installed inside the pump casing (309) is sleeved on the outer wall of the rotating shaft (302). An air supply pipe (310) is provided at the output end of the pump casing (309). The first cleaning pipe (701) and the second cleaning pipe (704) are both connected to the air supply pipe (310), and a three-way valve (311) is provided at the connection. The outer walls of the exhaust shaft (209) and the rotating shaft (302) are both sleeved with synchronous pulleys (305), and the outer walls of the synchronous pulleys (305) are both sleeved with belts (304).

10. The explosion-proof integrated dust sampling and filtration device for steel plants according to claim 6, characterized in that: The outer wall of the winch shaft (605) is fitted with a driven wheel (307), and the outer wall of the exhaust shaft (209) is fitted with a drive wheel (306) with a radius smaller than that of the driven wheel (307). Both the outer walls of the drive wheel (306) and the driven wheel (307) are fitted with belts (308). The upper end of the support frame (100) is provided with a mounting seat (312) for supporting the motor (301) and the rotating shaft (302). The sampling structure (500) includes a suction pipe (501) connected to the suction end of the pump casing (309) and the input pipe (208). The suction pipe (501) is provided with a discharge port at the bottom controlled by a valve assembly and a collection cylinder (502) with a filter screen inside.

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