Converter top and bottom composite injection biomass powder gas path mixed pressure stabilizing delivery device

Abstract

The present application relates to converter steelmaking injection equipment technical field, specifically to a kind of top and bottom composite injection biomass powder gas path mixed pressure stabilizing conveying device, including pressure stabilizing tank, the top of the pressure stabilizing tank is provided with pressure sensing component, the surface of pressure stabilizing tank is provided with pressure relief cleaning component, the bottom of pressure stabilizing tank is provided with mixed feed component, the bottom of the pressure stabilizing tank is provided with support adjusting component, the two sides of the pressure stabilizing tank are also provided with two-way discharge pipeline.The present application is matched by setting pressure sensing component and pressure relief cleaning component, and pressure monitoring module real-time acquisition pressure stabilizing tank internal pressure, both complete tank overpressure pressure relief protection, can also automatically clean the biomass powder accumulated on the surface of filter screen, avoid pressure relief pipeline to be blocked by powder, solve the problem that powder is discharged, filter component is easily blocked, needs manual disassembly cleaning when traditional pressure stabilizing conveying device pressure relief, guarantee converter injection gas path pressure stable continuous.

Description

Technical Field

[0001] This invention relates to the technical field of converter steelmaking injection equipment, specifically a converter top and bottom composite injection biomass powder gas path mixing and pressure stabilizing conveying device. Background Technology

[0002] The use of top and bottom composite injection of biomass char powder in converter steelmaking can leverage the reducing and carbon-enhancing effects of biomass char, reducing carbon emissions during converter smelting. This is an important low-carbon steelmaking technology. Biomass powder has the characteristics of low bulk density, irregular particle morphology, and large internal friction angle. It is prone to bridging, agglomeration, and segregation during pneumatic conveying. Most existing converter powder injection systems use injectors to directly feed the powder into the conveying pipeline, lacking a centralized pressure stabilization and buffer chamber. Fluctuations in upstream carrier gas pressure and changes in pipeline resistance are directly converted into pressure pulsations in the gas-powder two-phase flow. Conveying devices are used when mixing and conveying biomass powder in the gas path.

[0003] Regarding the aforementioned technologies, the inventors believe that the following defects exist: In practical applications, the air pressure of the conveying device is unstable, which leads to a decrease in the conveying efficiency of the device. Furthermore, it is impossible to maintain a stable pressure during conveying. If pressure relief is required, manual operation is necessary, and pressure relief will cause leakage of biomass powder. If a filter structure is used to prevent leakage, automatic cleaning will not be possible during pressure relief, and prolonged use will lead to equipment blockage, affecting the conveying operation of the device. Therefore, we propose a converter top and bottom composite injection biomass powder air path mixing and pressure stabilizing conveying device to solve the above-mentioned problems. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to propose a converter top and bottom composite injection biomass powder gas path mixing and pressure stabilizing conveying device, which has the advantages of depressurization and component cleaning at the same time, thus solving the problem of biomass powder leakage during depressurization and the inability to clean components at the same time.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A converter top and bottom composite injection biomass powder gas path mixing and pressure stabilizing conveying device includes a pressure stabilizing tank. The top of the pressure stabilizing tank is equipped with a pressure sensing component, the surface of the pressure stabilizing tank is equipped with a pressure relief and cleaning component, the bottom of the pressure stabilizing tank is equipped with a mixing and feeding component, the bottom of the pressure stabilizing tank is equipped with a support and adjustment component, and two discharge pipes are also provided on both sides of the pressure stabilizing tank. The two discharge pipes are respectively used to connect to the converter top blowing injection branch and the converter bottom blowing injection branch.

[0006] The pressure sensing component includes a cover set on the top of the pressure stabilizing tank. A threaded cover is threadedly connected to the top of the cover. A pressure monitoring module is fixedly installed on the top of the threaded cover. A positioning inclined plate is fixedly installed on the surface of the pressure stabilizing tank. A threaded tightening rod is inserted into the positioning inclined plate. One end of the threaded tightening rod is rotatably connected to a snap-fit ​​plate through a bearing. The inner side of the snap-fit ​​plate is in contact with the top of the cover.

[0007] The pressure relief and cleaning assembly includes a pressure relief pipe connected to one side of the pressure stabilizing tank. A support ring is fixedly installed inside the pressure relief pipe. A filter screen is fixedly installed inside the support ring. A reset spring is fixedly installed on the top of the support ring. A piston block is fixedly installed on the top of the reset spring. A round rod is fixedly installed on the top of the piston block. A disc is fixedly installed on the top of the round rod. A limit slide rod is inserted into the disc.

[0008] By setting up pressure sensing components and pressure relief cleaning components to work together, the pressure monitoring module collects the internal pressure of the pressure stabilizing tank in real time. When the tank is over-pressurized, the high-pressure gas pushes the piston block to move upward against the spring force of the reset spring, thus achieving automatic pressure relief. During the pressure relief process, the special-shaped striking rod and the vibration motor work together to strike and vibrate the filter screen to clean the dust. This can shake the biomass powder intercepted on the filter screen back into the pressure stabilizing tank, thus completing the over-pressure relief protection of the tank and automatically cleaning the biomass powder accumulated on the surface of the filter screen. This prevents the pressure relief pipeline from being blocked by powder and reduces the leakage of biomass powder with the pressure relief gas. This solves the problems of powder leakage, easy clogging of filter components, and the need for manual disassembly and cleaning when traditional pressure stabilizing conveying devices are released, ensuring stable and continuous pressure in the converter injection gas path.

[0009] As a preferred technical solution, an abutment ring is fixedly installed on the top of the cover, the surface of the abutment ring abuts against one side of the snap-fit ​​plate, and the abutment ring is made of rubber. The bottom of the cover fits against the top of the pressure stabilizing tank.

[0010] As a preferred technical solution, an abutment ring is fixedly installed on the top of the cover, the surface of the abutment ring abuts against one side of the snap-fit ​​plate, and the abutment ring is made of rubber. The bottom of the cover fits against the top of the pressure stabilizing tank.

[0011] As a preferred technical solution, a pressure sensor is fixedly installed at the bottom of the piston block, and a shaped striking rod is fixedly installed at the bottom of the pressure sensor. The bottom of the shaped striking rod contacts the top of the filter screen plate, and a vibration motor is fixedly installed at the bottom of the filter screen plate.

[0012] As a preferred technical solution, the mixing and feeding assembly includes a motor bracket fixedly installed at the bottom of the pressure stabilizing tank, a drive motor fixedly installed at the bottom of the motor bracket, a rotating rod fixedly installed on the output shaft of the drive motor, and the top of the rotating rod penetrating the pressure stabilizing tank and extending into the interior of the pressure stabilizing tank.

[0013] As a preferred technical solution, an arc-shaped fan blade is fixedly installed at one end of the rotating rod inside the pressure stabilizing tank. The number of arc-shaped fan blades is five, and the five arc-shaped fan blades are distributed in a circumferential array at one end of the rotating rod. A cleaning and mixing rod is fixedly installed on the surface of the rotating rod. The cleaning and mixing rod is arc-shaped, and the arc shape of the cleaning and mixing rod fits the arc shape of the inner wall of the pressure stabilizing tank.

[0014] As a preferred technical solution, an arc-shaped fan blade is fixedly installed at one end of the rotating rod inside the pressure stabilizing tank. The number of arc-shaped fan blades is five, and the five arc-shaped fan blades are distributed in a circumferential array at one end of the rotating rod. A cleaning and mixing rod is fixedly installed on the surface of the rotating rod. The cleaning and mixing rod is arc-shaped, and the arc shape of the cleaning and mixing rod fits the arc shape of the inner wall of the pressure stabilizing tank.

[0015] By setting up a mixing and feeding assembly, biomass powder is fed into the pressure stabilizing tank through the feed pipe, and carrier gas is fed into the tank through the air inlet pipe. The drive motor drives the rotating rod to drive the arc-shaped fan blades to rotate at high speed, which strongly stirs and mixes the powder and carrier gas. At the same time, the cleaning and mixing rod rotates along the inner wall of the pressure stabilizing tank to scrape off the biomass powder adhering to the tank wall and prevent the powder from sticking and clumping on the inner wall of the tank. This achieves full and uniform mixing of gas and powder, reduces the phenomenon of biomass powder bridging and agglomeration, ensures uniform concentration of gas-solid two-phase conveying medium, and is conducive to stable powder feeding to the top and bottom blowing branches of the converter, reducing pulse jet blowing and material interruption.

[0016] As a preferred technical solution, the support adjustment assembly includes a support pipe fixedly installed at the bottom of the pressure stabilizing tank, and a support leg is threadedly connected to the bottom of the support pipe.

[0017] As a preferred technical solution, the bottom of the support leg is rotatably connected to a mounting bracket via a rotating shaft. A support plate is fixedly installed at the bottom of the mounting bracket, and the lower surface of the support plate has anti-slip textures. The top of the pressure tank is equipped with a cover, a positioning inclined plate, a threaded tightening rod, and a snap-fit ​​plate to achieve rapid compression and sealing. The rubber abutment ring improves the top sealing performance. The support adjustment assembly consists of a support pipe, support leg, and support plate, which allows for adjustable equipment height. The anti-slip texture on the bottom of the support plate improves the stability of the equipment placement and facilitates on-site installation and leveling in metallurgical facilities. Two discharge pipelines are connected to the top blowing and bottom blowing branches of the converter, respectively. One pressure tank can simultaneously provide pressure-stabilizing gas-powder medium for both top and bottom blowing. The equipment has a high degree of integration and is suitable for the actual working conditions of top and bottom composite blowing in converters.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention uses a pressure sensing component and a pressure relief and cleaning component to work together. The pressure monitoring module collects the internal pressure of the pressure stabilizing tank in real time. When the tank is overpressurized, the high-pressure gas pushes the piston block to move upward against the spring force of the reset spring, thus achieving automatic pressure relief. During the pressure relief process, the special-shaped striking rod and the vibration motor work together to strike and vibrate the filter screen to clean the dust. This can shake the biomass powder intercepted on the filter screen back into the pressure stabilizing tank, thus completing the overpressure relief protection of the tank and automatically cleaning the biomass powder accumulated on the surface of the filter screen. This prevents the pressure relief pipeline from being blocked by powder and reduces the leakage of biomass powder with the pressure relief gas. This solves the problems of powder leakage, easy clogging of filter components, and the need for manual disassembly and cleaning in traditional pressure stabilizing and conveying devices, and ensures stable and continuous pressure in the converter injection gas path.

[0019] 2. This invention, through the setting of a mixing and feeding assembly, allows biomass powder to be fed into the pressure stabilizing tank through a feeding pipe, while carrier gas is fed into the tank through an air inlet pipe. A drive motor drives a rotating rod to drive an arc-shaped fan blade to rotate at high speed, powerfully stirring and mixing the powder and carrier gas. At the same time, a scraping and mixing rod rotates along the inner wall of the pressure stabilizing tank to scrape off the biomass powder adhering to and agglomerated on the tank wall, preventing the powder from clumping on the inner wall of the tank. This achieves thorough and uniform mixing of gas and powder, reduces the phenomenon of biomass powder bridging and agglomeration, ensures uniform concentration of the gas-solid two-phase conveying medium, and facilitates stable powder feeding to the top and bottom blowing branches of the converter, reducing pulse jetting and material interruption phenomena.

[0020] 3. This invention achieves rapid compression and sealing by using a cover, positioning inclined plate, threaded tightening rod, and snap-fit ​​plate on the top of the pressure stabilizing tank. The rubber abutment ring improves the top sealing performance. The support adjustment assembly consists of support pipe, support legs, and support plate, which allows for adjustable equipment height. The anti-slip texture on the bottom of the support plate improves the stability of the equipment placement and facilitates on-site installation and leveling in metallurgical facilities. The two discharge pipelines are respectively connected to the top blowing and bottom blowing branches of the converter. One pressure stabilizing tank can simultaneously provide pressure-stabilizing gas-powder medium for both top and bottom blowing. The equipment has a high degree of integration and is suitable for the actual working conditions of converter top and bottom composite blowing. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a first-view three-dimensional structural diagram of the present invention; Figure 2 This is a first-view stereoscopic cross-sectional structural diagram of the present invention; Figure 3This is a schematic diagram of the second-view three-dimensional structure of the present invention; Figure 4 This is a schematic diagram of the second-view stereoscopic cross-sectional structure of the present invention; Figure 5 For the present invention Figure 1 Enlarged schematic diagram of the structure at point A in the middle; Figure 6 For the present invention Figure 2 Enlarged schematic diagram of the structure at point B; Figure 7 For the present invention Figure 3 Enlarged schematic diagram of the structure at point C.

[0023] Figure 8 This is a three-dimensional structural diagram of the pressure relief pipe of the present invention.

[0024] In the diagram: 1. Pressure stabilizing tank; 2. Pressure sensing assembly; 200. Cover; 201. Threaded cover; 202. Pressure monitoring module; 203. Positioning ramp; 204. Threaded tightening rod; 205. Snap-fit ​​plate; 206. Abutment ring; 3. Pressure relief and cleaning assembly; 300. Pressure relief pipe; 301. Support ring; 302. Filter screen; 303. Return spring; 304. Piston block; 305. Round rod; 306. Disc; 307. Limiting slide rod; 308. Sealing ring; 309. Irregularly shaped striking rod; 310. Vibration motor; 311. Pressure sensor; 312. Retaining ring; 4. Mixing and feeding assembly; 400. Motor bracket; 401. Drive motor; 402. Rotating rod; 403. Arc-shaped fan blade; 404. Scraping and mixing rod; 405. Feed pipe; 406. Air inlet pipe; 5. Support and adjustment assembly; 500. Support pipe; 501. Support leg; 502. Support plate; 6. Discharge pipe. Detailed Implementation

[0025] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, and "several" means one or more, unless otherwise explicitly specified.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] The following disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0029] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0030] According to the appendix Figure 1-8 As shown, this embodiment of the invention provides a converter top and bottom composite injection biomass powder gas path mixing and pressure stabilizing conveying device, including a pressure stabilizing tank 1. The pressure stabilizing tank 1 is a sealed pressure-bearing tank body, which serves as the core cavity for mixing biomass powder with inert carrier gas and for pressure buffering and stabilizing. A pressure sensing component 2 is provided on the top of the pressure stabilizing tank 1, a pressure relief and cleaning component 3 is provided on the side wall surface of the pressure stabilizing tank 1, a mixing and feeding component 4 is provided at the bottom of the pressure stabilizing tank 1, and a support and adjustment component 5 is also provided at the bottom of the pressure stabilizing tank 1. Two discharge pipes 6 are also provided on both sides of the tank body of the pressure stabilizing tank 1. The two discharge pipes 6 are respectively used to connect to the converter top blowing injection branch and the converter bottom blowing injection branch, and to convey the pressure-stabilized and mixed gas-powder two-phase medium to the converter injection gun body.

[0031] The pressure sensing assembly 2 includes a cover 200 disposed on the top of the pressure stabilizing tank 1. The cover 200 serves as a maintenance and sealing end cover on the top of the pressure stabilizing tank 1. A threaded cover 201 is threadedly connected to the top of the cover 200. The threaded cover 201 and the cover 200 are detachably connected by a thread for easy disassembly and maintenance of internal components. A pressure monitoring module 202 is fixedly installed on the top of the threaded cover 201. The detection end of the pressure monitoring module 202 extends through the threaded cover 201 into the interior of the pressure stabilizing tank 1 for real-time acquisition of gas pressure data inside the tank. The surface of the pressure stabilizing tank 1 is fixed. A positioning ramp 203 is installed, which provides a mounting base for the threaded tightening rod 204. The threaded tightening rod 204 is inserted into the positioning ramp 203 and is threadedly engaged with the positioning ramp 203. One end of the threaded tightening rod 204 is rotatably connected to a snap-fit ​​plate 205 through a bearing. The inner side of the snap-fit ​​plate 205 contacts the top of the cover 200. Rotating the threaded tightening rod 204 can push the snap-fit ​​plate 205 to press or loosen the cover 200, so as to achieve quick pressing and sealing of the cover 200 and quick disassembly.

[0032] The pressure relief and cleaning assembly 3 includes a pressure relief pipe 300 connected to one side of the pressure stabilizing tank 1. The pressure relief pipe 300 serves as a channel for venting overpressure gas. A support ring 301 is fixedly installed inside the pressure relief pipe 300, and the support ring 301 is an annular fixed seat. A filter screen 302 is fixedly installed inside the support ring 301. The filter screen 302 can intercept biomass powder carried in the pressure relief gas flow, preventing the powder from leaking out with the pressure relief gas. A return spring 303 is fixedly installed on the top of the support ring 301, and the return spring 303 provides... The piston block 304 has a reset spring force; the piston block 304 is fixedly installed on the top of the reset spring 303, and the piston block 304 is a pressure relief sealing opening and closing component; a round rod 305 is fixedly installed on the top of the piston block 304, and a disc 306 is fixedly installed on the top of the round rod 305. A limiting slide rod 307 is inserted on the disc 306, and the disc 306 can slide up and down along the limiting slide rod 307, which plays a guiding and limiting role in the lifting and lowering movement of the piston block 304, ensuring that the lifting and lowering movement of the piston block 304 is smooth and does not deflect or jam.

[0033] By setting the pressure sensing component 2 and the pressure relief and cleaning component 3 to work together, the pressure monitoring module 202 collects the internal pressure of the pressure stabilizing tank 1 in real time. When the pressure inside the tank exceeds the preset safe working threshold, the high-pressure gas inside the pressure stabilizing tank 1 enters the pressure relief pipe 300. The high-pressure gas pushes the piston block 304 to move upward against the elastic force of the return spring 303, and the pressure relief channel automatically opens to achieve automatic pressure relief. During the pressure relief process, the piston block 304 drives the pressure sensor 311 and the irregularly shaped striking rod 309 to rise synchronously. After the pressure relief is completed, the return spring 303 pushes the piston block 304 back down, and the irregularly shaped striking rod 309 strikes the filter screen 302 downward. At the same time, the filter screen 302... The vibration motor 310 mounted at the bottom synchronously generates high-frequency vibration. The irregularly shaped striking rod 309 and the vibration motor 310 work together to strike and vibrate the filter screen 302 to clean the dust. This can shake off the biomass powder that has been intercepted and accumulated on the filter screen 302 and fall back into the pressure stabilizing tank 1. This structure not only completes the overpressure relief protection of the tank, but also automatically cleans the biomass powder accumulated on the surface of the filter screen 302, preventing the pressure relief pipeline from being blocked by powder. At the same time, the filter screen 302 blocks the leakage of biomass powder with the pressure relief gas, solving the problems of powder leakage, easy clogging of filter components, and the need for manual disassembly and cleaning when traditional pressure stabilizing conveying devices are depressurized, ensuring stable and continuous pressure in the converter injection gas path.

[0034] As a preferred technical solution, an abutment ring 206 is fixedly installed on the top of the cover 200. The surface of the abutment ring 206 abuts against one side of the snap-fit ​​plate 205. The abutment ring 206 is made of rubber. The rubber abutment ring 206 can buffer the mechanical compression when the snap-fit ​​plate 205 presses the cover 200, and at the same time improve the sealing effect at the contact position between the cover 200 and the snap-fit ​​plate 205. The bottom of the cover 200 fits against the top of the pressure stabilizing tank 1. A sealing gasket can be matched between the bottom of the cover 200 and the end face of the pressure stabilizing tank 1 to further improve the overall sealing performance of the top of the pressure stabilizing tank 1 and prevent the leakage of pressurized gas inside the tank.

[0035] As a preferred technical solution, a pressure sensor 311 is fixedly installed at the bottom of the piston block 304. The pressure sensor 311 can detect the force of the gas inside the tank on the piston block 304 and indirectly provide feedback on the pressure relief trigger state. A shaped striking rod 309 is fixedly installed at the bottom of the pressure sensor 311. The bottom of the shaped striking rod 309 contacts the top of the filter screen plate 302. When the piston block 304 moves up and down, it drives the shaped striking rod 309 to repeatedly strike the filter screen plate 302. A vibration motor 310 is fixedly installed at the bottom of the filter screen plate 302. The vibration motor 310 provides high-frequency vibration excitation to the filter screen plate 302 to achieve the shaking and cleaning of powder materials on the filter screen plate 302.

[0036] As a preferred technical solution, the mixing and feeding assembly 4 includes a motor bracket 400 fixedly installed at the bottom of the pressure stabilizing tank 1, which serves as the mounting base for the drive motor 401. The drive motor 401 is fixedly installed at the bottom of the motor bracket 400, and provides stirring and rotation power. A rotating rod 402 is fixedly installed on the output shaft of the drive motor 401. The top of the rotating rod 402 penetrates the bottom of the pressure stabilizing tank 1 and extends into the interior of the pressure stabilizing tank 1. A dynamic seal is provided at the penetration position between the rotating rod 402 and the pressure stabilizing tank 1 to prevent pressurized gas inside the tank from leaking from the shaft hole.

[0037] As a preferred technical solution, an arc-shaped fan blade 403 is fixedly installed at one end of the rotating rod 402 inside the pressure stabilizing tank 1. There are five arc-shaped fan blades 403, and the five arc-shaped fan blades 403 are arranged in a circumferential array at one end of the rotating rod 402. A scraping and mixing rod 404 is fixedly installed on the surface of the rotating rod 402. The scraping and mixing rod 404 is arc-shaped, and the arc shape of the scraping and mixing rod 404 fits the arc shape of the inner wall of the pressure stabilizing tank 1. The edge of the scraping and mixing rod 404 is close to the inner wall of the pressure stabilizing tank 1, and scrapes the tank wall during rotation.

[0038] By setting up the mixing and feeding assembly 4, biomass powder is fed into the pressure stabilizing tank 1 through the feed pipe 405, and inert carrier gas is fed into the tank through the air inlet pipe 406. The discharge ports of the feed pipe 405 and the air inlet pipe 406 extend into the pressure stabilizing tank 1 and face the mixing area between the arc-shaped fan blade 403 and the scraping and mixing rod 404. The drive motor 401 drives the rotating rod 402 to drive the arc-shaped fan blade 403 to rotate at high speed, which strongly stirs and mixes the powder and the carrier gas, breaking up the agglomerated particles of biomass powder. At the same time, the scraping and mixing rod 404 rotates along the inner wall of the pressure stabilizing tank 1 to scrape off the agglomerated biomass powder adhering to the tank wall, preventing the powder from sticking and clumping on the inner wall of the tank, realizing full and uniform mixing of gas and powder, reducing the phenomenon of biomass powder bridging and agglomeration, ensuring the uniform and stable concentration of the gas-solid two-phase conveying medium, which is conducive to the stable feeding of powder to the top and bottom blowing branches of the converter, and reducing pulse jet blowing and material interruption.

[0039] As a preferred technical solution, the support adjustment component 5 includes a support tube 500 fixedly installed at the bottom of the pressure tank 1. The bottom of the support tube 500 is threadedly connected to a support leg 501. The support tube 500 and the support leg 501 are engaged by a threaded pair. Rotating the support leg 501 can change the overall support height.

[0040] As a preferred technical solution, the bottom of the support leg 501 is rotatably connected to the mounting bracket via a rotating shaft. The bottom of the mounting bracket is fixedly installed with a support plate 502. The lower surface of the support plate 502 is provided with anti-slip texture, which increases the friction coefficient between the support plate 502 and the ground. The top of the pressure tank 1 is equipped with a cover 200, a positioning inclined plate 203, a threaded tightening rod 204, and a snap-fit ​​plate 205 to achieve rapid compression and sealing. The rubber abutment ring 206 improves the top sealing performance. The support adjustment component 5 consists of a support pipe 500, a support leg 501, and a support plate 502. The height of the equipment is adjustable by means of threaded engagement. The anti-slip texture on the bottom surface of the support plate 502 improves the stability of the equipment placement and facilitates the installation and leveling of the equipment on uneven ground in the metallurgical site. The two discharge pipes 6 are respectively connected to the top blowing branch and the bottom blowing branch of the converter. One pressure tank can provide pressure-stabilizing gas-powder medium for both the top and bottom blowing simultaneously. The equipment has a high degree of integration and is suitable for the actual working conditions of the converter top and bottom composite blowing.

[0041] In use, the biomass powder gas path mixing and pressure stabilizing conveying device of the converter top and bottom composite injection biomass powder of the present invention allows biomass powder to enter the pressure stabilizing tank 1 through the feed pipe 405. Inert carrier gas is introduced into the pressure stabilizing tank 1 through the air inlet pipe 406. The inner end openings of the feed pipe 405 and the air inlet pipe 406 face the area between the arc-shaped fan blade 403 and the cleaning and mixing rod 404. The drive motor 401 is fixed on the motor bracket 400. The output shaft of the drive motor 401 drives the rotating rod 402 to rotate. The rotating rod 402 drives the arc-shaped fan blade 403 to rotate, stirring the powder and carrier gas entering the tank to achieve full mixing of the gas and powder phases. At the same time, the rotating rod 402 drives the cleaning and mixing rod 404 to rotate along the inner wall of the pressure stabilizing tank 1 to scrape off the agglomerated biomass powder adhering to the inner wall of the tank and prevent the powder from accumulating on the wall.

[0042] In the pressure sensing component 2, the pressure monitoring module 202 is installed above the threaded cover 201 to monitor the working pressure inside the pressure stabilizing tank 1 in real time. The cover 200 is assembled on the top of the pressure stabilizing tank 1. Rotating the threaded tightening rod 204 drives the snap-fit ​​plate 205 to press the abutment ring 206, thereby achieving the sealing and locking of the cover 200.

[0043] When the internal pressure of the pressure stabilizing tank 1 exceeds the set safety threshold, high-pressure gas enters the pressure relief pipe 300, pushing the piston block 304 to move upward against the elastic force of the return spring 303. The piston block 304 drives the round rod 305 and the round disc 306 to slide upward along the limit slide rod 307, opening the pressure relief channel and releasing excess gas from the tank, thus achieving overpressure relief protection for the tank. During the pressure relief process, the irregularly shaped striking rod 309 at the bottom of the piston block 304 reciprocates to strike the filter screen plate 302, cooperating with the filter... The vibration motor 310 at the bottom of the screen plate 302 vibrates, shaking the biomass powder intercepted by the screen plate 302 back into the pressure tank 1. The screen plate 302 prevents the biomass powder from leaking out with the depressurized gas. The support ring 301 provides positioning support for the screen plate 302. The sealing ring 308 ensures the upper part of the pressure relief pipe 300 is sealed. The retaining ring 312 limits the stroke of the disc 306. The pressure sensor 311 collects the force signal of the piston block 304 and can provide feedback on the pressure relief action status.

[0044] After the pressure is released, the reset spring 303 pushes the piston block 304 to reset, closing the pressure release channel. The gas-powder two-phase material, after being stabilized and fully mixed, is transported to the top blowing branch and bottom blowing branch of the converter through the two discharge pipes 6 on both sides of the pressure stabilizing tank 1, respectively, to complete the converter top and bottom composite blowing operation.

[0045] The height of the device is adjusted by the support tube 500 and support leg 501 of the support adjustment component 5, and the support plate 502 ensures stable placement of the device.

[0046] In the description of this specification, the references to terms such as "embodiment," "one implementation," "some implementations," "illustrative implementation," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the described implementation or example is included in at least one implementation or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same implementation or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more implementations or examples.

[0047] The basic principles, main features, and advantages of the present invention have been described above with reference to specific embodiments. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples of the present invention and are not intended to limit the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A converter top and bottom composite injection biomass powder gas path mixing and pressure stabilizing conveying device, comprising a pressure stabilizing tank (1), characterized in that: The pressure stabilizing tank (1) is provided with a pressure sensing component (2) at the top, a pressure relief cleaning component (3) on the surface of the pressure stabilizing tank (1), a mixing and feeding component (4) at the bottom of the pressure stabilizing tank (1), a support and adjustment component (5) at the bottom of the pressure stabilizing tank (1), and two discharge pipes (6) on both sides of the pressure stabilizing tank (1), which are respectively used to connect to the top blowing and bottom blowing branch of the converter; The pressure sensing component (2) includes a cover (200) disposed on the top of the pressure stabilizing tank (1), a threaded cover (201) threadedly connected to the top of the cover (200), a pressure monitoring module (202) fixedly installed on the top of the threaded cover (201), a positioning inclined plate (203) fixedly installed on the surface of the pressure stabilizing tank (1), a threaded tightening rod (204) inserted on the positioning inclined plate (203), one end of the threaded tightening rod (204) being rotatably connected to a snap-fit ​​plate (205) through a bearing, and the inner side of the snap-fit ​​plate (205) contacting the top of the cover (200); The pressure relief and cleaning assembly (3) includes a pressure relief pipe (300) connected to one side of the pressure stabilizing tank (1). A support ring (301) is fixedly installed inside the pressure relief pipe (300). A filter screen plate (302) is fixedly installed inside the support ring (301). A reset spring (303) is fixedly installed on the top of the support ring (301). A piston block (304) is fixedly installed on the top of the reset spring (303). A round rod (305) is fixedly installed on the top of the piston block (304). A disc (306) is fixedly installed on the top of the round rod (305). A limiting slide rod (307) is inserted on the disc (306).

2. The converter top and bottom composite injection biomass powder gas path mixing and pressure stabilizing conveying device according to claim 1, characterized in that: The top of the cover (200) is fixedly installed with an abutment ring (206), the surface of the abutment ring (206) abuts against one side of the snap plate (205), and the abutment ring (206) is made of rubber. The bottom of the cover (200) is attached to the top of the pressure tank (1).

3. The converter top and bottom composite injection biomass powder gas path mixing and pressure stabilizing conveying device according to claim 1, characterized in that: A sealing ring (308) is fixedly installed on the top of the pressure relief pipe (300). The top of the sealing ring (308) is fixedly connected to the bottom of the limiting slide rod (307). A retaining ring (312) is fixedly installed on the top of the limiting slide rod (307). A rod hole is opened on the disc (306) for the limiting slide rod (307) to pass through. The inner wall of the rod hole is slidably connected to the surface of the limiting slide rod (307).

4. The converter top and bottom composite injection biomass powder gas path mixing and pressure stabilizing conveying device according to claim 1, characterized in that: A pressure sensor (311) is fixedly installed at the bottom of the piston block (304), and a shaped striking rod (309) is fixedly installed at the bottom of the pressure sensor (311). The bottom of the shaped striking rod (309) contacts the top of the filter screen plate (302), and a vibration motor (310) is fixedly installed at the bottom of the filter screen plate (302).

5. The converter top and bottom composite injection biomass powder gas path mixing and pressure stabilizing conveying device according to claim 1, characterized in that: The mixing and feeding assembly (4) includes a motor bracket (400) fixedly installed at the bottom of the pressure tank (1). A drive motor (401) is fixedly installed at the bottom of the motor bracket (400). A rotating rod (402) is fixedly installed on the output shaft of the drive motor (401). The top of the rotating rod (402) passes through the pressure tank (1) and extends into the interior of the pressure tank (1).

6. The converter top and bottom composite injection biomass powder gas path mixing and pressure stabilizing conveying device according to claim 5, characterized in that: The rotating rod (402) is fixedly installed with an arc-shaped fan blade (403) at one end inside the pressure stabilizing tank (1). There are five arc-shaped fan blades (403), and the five arc-shaped fan blades (403) are arranged in a circular array at one end of the rotating rod (402). A cleaning and mixing rod (404) is fixedly installed on the surface of the rotating rod (402). The cleaning and mixing rod (404) is arc-shaped, and the arc of the cleaning and mixing rod (404) fits the arc of the inner wall of the pressure stabilizing tank (1).

7. The converter top and bottom composite injection biomass powder gas path mixing and pressure stabilizing conveying device according to claim 1, characterized in that: The mixing and feeding assembly (4) also includes a feed pipe (405) and an air inlet pipe (406) respectively connected to both sides of the pressure stabilizing tank (1), and the feed pipe (405) and the air inlet pipe (406) are connected to a valve at the end outside the pressure stabilizing tank (1). In addition, the end of the feed pipe (405) and the air inlet pipe (406) inside the pressure stabilizing tank (1) is set to an inclined state, and the opening of the end of the feed pipe (405) and the air inlet pipe (406) inside the pressure stabilizing tank (1) faces between the cleaning and mixing rod (404) and the arc-shaped fan blade (403).

8. The converter top and bottom composite injection biomass powder gas path mixing and pressure stabilizing conveying device according to claim 1, characterized in that: The support adjustment assembly (5) includes a support tube (500) fixedly installed at the bottom of the pressure tank (1), and a support leg (501) is threadedly connected to the bottom of the support tube (500).

9. A converter top and bottom composite injection biomass powder gas path mixing and pressure stabilizing conveying device according to claim 8, characterized in that: The bottom of the support leg (501) is rotatably connected to a mounting bracket via a pivot, and a support plate (502) is fixedly installed at the bottom of the mounting bracket. The lower surface of the support plate (502) is provided with anti-slip texture.

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