Efficient water-vapor mixing micro-mist dust removal system for rolling mill

Abstract

The invention discloses an efficient rolling mill water vapor mixing micro-mist dust removal system which comprises a water supply device, an air supply device, a main machine pump station mechanism, a micro-mist valve set unit and a dust suppression spraying unit, the water supply device is used for providing water, and the air supply device is used for providing compressed air. The output flow and output pressure of water and compressed air are adaptively regulated and controlled through the main machine pump station mechanism, then the treated water and compressed air are shunted and diffused through the micro-fog valve set unit, and finally the water and the compressed air are mixed through the dust suppression spraying unit to form aerial fog. The system can form a good aerial fog spraying effect, effectively reduces the dust concentration of a rolling mill during operation, improves the production operation environment of a hot rolling plant, improves the surface quality of a steel plate, and ensures the health and safety of operators.

Description

Technical Field

[0001] The invention relates to the technical field of water mist dust removal equipment, and in particular to a high-efficiency rolling mill water-steam mixed micro-mist dust removal system. Background Art

[0002] At present, the rolling mills in thick plate plants use a water spray dust removal system, which sends 5bar turbid ring system water to the dust removal nozzle through a pipeline and sprays the water at a fan angle of 15° to suppress the generation of oxide dust during high-speed rolling; but the effect is not good in actual use and the oxide dust generated by the rolling mill cannot be suppressed. This is because the direct water spray system directly sprays water through the nozzle, and the water spray particle size is too large, while the oxide dust particles are fine, most of which are distributed between 10 and 30um. The water droplets collide elastically with the dust and cannot be combined together, so the final dust removal effect is very poor; at the same time, the raw water spray dust removal system of the rolling mill has a large particle size of the sprayed water droplets, which directly drip onto the steel plate to form star-shaped iron oxide scale, which has a greater impact on the surface quality of the high-surface steel plate and affects the final quality of the steel plate. Therefore, it is necessary to transform the dust removal system to meet the dust removal needs and reduce the impact on the surface quality of the steel plate. Summary of the invention

[0003] The purpose of the present invention is to provide a high-efficiency rolling mill water vapor mixed micro-mist dust removal system, which can effectively reduce the dust concentration of the rolling mill during operation, improve the production environment of the hot rolling plant, improve the surface quality of the steel plate, and ensure the health and safety of the operators.

[0004] In order to achieve the above object, the present invention adopts the following technical solution: An efficient rolling mill water vapor mixed micro mist dust removal system, comprising: Water supply equipment, used to provide water; Air supply equipment, used to provide compressed air; The host pump station mechanism includes a water tank, a booster pump, a wafer-type swing check valve, an auxiliary return pipe, a water control regulating valve, a main water pipe, a pressure transmitter, a water injection pipe, a self-cleaning filter, an air injection pipe, a support, a gas pressure reducing valve, and a base. The water tank is arranged on the upper surface of the base, the booster pump is installed on the top of the water tank, the input end of the booster pump is located in the water tank, the output end of the booster pump is connected to the main water pipe through the wafer-type swing check valve, the auxiliary return pipe is provided with a first port, a second port and a third port, and the first port and the second port are respectively connected to the side of the water tank. The height of the first port is greater than that of the second port, the height of the second port is equal to that of the third port, the third port is connected to the main water pipe through a water control regulating valve, the pressure transmitter is arranged on the main water pipe, the pressure transmitter is provided with a PIC control module which is in communication with the water control regulating valve, one end of the water injection pipe is connected to a water supply device, the other end of the water injection pipe is arranged in a water tank, the self-cleaning filter is arranged on the water injection pipe, the gas injection pipe is arranged on a base through a support, one end of the gas injection pipe is connected to a gas supply device, and the gas pressure reducing valve is arranged on the gas injection pipe; A micro-mist valve assembly unit, the micro-mist valve assembly unit includes a plurality of water distribution units and a plurality of gas distribution units, the plurality of water distribution units are arranged in an array, and an gas distribution unit is arranged between every two of the water distribution units, the water distribution unit includes a primary water distribution pipe, a secondary water distribution pipe, a tertiary water distribution pipe, a quaternary water distribution pipe, and a butterfly valve assembly. The secondary water distribution pipe is provided with two and is respectively connected to the main water supply pipe through the primary water distribution pipe. The two secondary water distribution pipes are respectively located on both sides of the primary water distribution pipe, and the center lines of the two are not on the same straight line. The tertiary water distribution pipe is provided with two and is connected to the two secondary water distribution pipes in a one-to-one correspondence. The quaternary water distribution pipe is provided with a plurality of, and the plurality of the quaternary water distribution pipes are arranged in parallel, and one end thereof is respectively connected to the upper side of the tertiary water distribution pipe. The butterfly valve assembly is arranged on the primary water distribution pipe, and the gas distribution unit includes a primary gas distribution pipe, a secondary gas distribution pipe, a tertiary ... An air distribution pipe, a four-stage air distribution pipe, and a second butterfly valve assembly. The two-stage air distribution pipes are provided with two and are respectively connected to the other end of the air injection pipe through the first-stage air distribution pipe. The two second-stage air distribution pipes are respectively located on both sides of the first-stage air distribution pipe, and the center lines of the two are not on the same straight line. The three-stage air distribution pipes are provided with two and are connected to the two second-stage air distribution pipes one by one. The four-stage air distribution pipes are provided with multiple ones, and the multiple four-stage air distribution pipes are arranged in parallel, and one end thereof is respectively connected to the lower side of the three-stage air distribution pipe. The second butterfly valve assembly is arranged on the first-stage air distribution pipe. In any adjacent water distribution unit and air distribution unit, the three-stage water distribution pipe of the water distribution unit and the three-stage air distribution pipe of the air distribution unit are arranged in parallel, and the other end of the four-stage water distribution pipe of the water distribution unit extends to the top of the three-stage air distribution pipe of the air distribution unit, and the other end of the four-stage air distribution pipe of the air distribution unit extends to the bottom of the three-stage water distribution pipe of the water distribution unit. A dust suppression spray unit, wherein a plurality of dust suppression spray units are provided, and the dust suppression spray unit comprises a water hose, an air hose and an atomizing nozzle, wherein one end of the water hose is connected to the other end of the four-stage water distribution pipe, and one end of the air hose is connected to the other end of the four-stage air distribution pipe, and the other ends of the water hose and the air hose are both connected to the top of the atomizing nozzle.

[0005] Furthermore, the host pump station mechanism also includes a water increase pipe and a pneumatic regulating valve. The water increase pipe is arranged on the outside of the water tank, one end of the water increase pipe is connected to the side of the water tank, and the other end of the water increase pipe is connected to the inside of the booster pump. The pneumatic regulating valve is arranged on the water increase pipe.

[0006] Furthermore, two booster pumps and two wafer-type swing check valves are provided, and the other end of the water booster pipe is connected to the inside of the two booster pumps through a diversion pipe.

[0007] Furthermore, a side of the water increase pipe is connected to a measuring pipe, and a pressure measuring gauge is provided on the measuring pipe.

[0008] Furthermore, the host pump station mechanism also includes a liquid level transmitter, a solenoid valve and a liquid pressure reducing valve. The liquid level transmitter is provided with an LIC control module. The measuring end of the liquid level transmitter is arranged in the water tank. The solenoid valve and the liquid pressure reducing valve are arranged on the water injection pipe. The solenoid valve is communicatively connected with the LIC control module.

[0009] Furthermore, a manual ball valve 1 is provided on the water injection pipe, a branch pipe is provided on the side of the water injection pipe and is connected to the manual ball valve 1 and the solenoid valve, a float valve is provided at one end of the branch pipe away from the water injection pipe and is located in the water tank, the water supply equipment is connected to one end of the air injection pipe through a manual ball valve 5, a manual ball valve 2 is provided on the auxiliary return pipe, and a manual ball valve 4 is provided on the air injection pipe.

[0010] Furthermore, the host pump station mechanism also includes a drainage manifold, a drainage branch pipe 1, a drainage branch pipe 2, a drainage branch pipe 3, a drainage branch pipe 4, a spring-loaded safety valve, and a manual ball valve 3. One end of the drainage branch pipe 1 and the drainage branch pipe 2 are connected to the side of the water tank, and the other ends of the drainage branch pipe 1 and the drainage branch pipe 2 are connected to the side of the drainage manifold. The height of one end of the drainage branch pipe 1 is greater than the height of one end of the drainage branch pipe 2. The manual ball valve 3 is arranged on the drainage branch pipe 2. A filter discharge valve is provided in the self-cleaning filter. The filter discharge valve is connected to the side of the drainage manifold through the drainage branch pipe 3. The water injection pipe and the drainage manifold are interconnected through the drainage branch pipe 4. The spring-loaded safety valve is arranged on the drainage branch pipe 4.

[0011] Furthermore, it also includes a medicine barrel, a medicine delivery tube and a medicine extraction pump. The medicine barrel is connected to the main water delivery pipe through the medicine delivery tube, and the medicine extraction pump is arranged on the medicine delivery tube.

[0012] Furthermore, the water distribution unit also includes a drainage branch pipe five and a drainage valve, the end of the drainage branch pipe five is connected to the first-level water distribution pipe, and the drainage valve is arranged on the drainage branch pipe five. The gas distribution unit also includes an exhaust branch pipe and an exhaust valve, the end of the exhaust branch pipe is connected to the first-level gas distribution pipe, and the exhaust valve is arranged on the exhaust branch pipe.

[0013] Beneficial effects of the present invention: 1. The present invention can significantly reduce the dust accumulation phenomenon of rolling mill equipment, avoid the surface of the steel plate being affected by the dust blocks of the rolling mill frame falling and pressing into the steel plate, and greatly improve the surface quality of the steel plate.

[0014] 2. The present invention can effectively combine compressed air with water, intelligently control the flow and pressure of water and air, and form a good aerosol spray effect, replacing the original water spray treatment. The present invention not only has a better dust removal effect, but also greatly reduces the amount of water spray, greatly reduces the temperature drop on the surface of the steel plate, and improves the quality of the product.

[0015] 3. The present invention can significantly reduce the dust concentration during rolling mill operation, effectively improve the production environment of the hot rolling mill, ensure the health and safety of operators, and reduce the wear of fine dust on bearings and other mechanical moving parts due to the greatly reduced dust amount, thereby extending the service life of the equipment and reducing the equipment failure rate.

[0016] 4. The present invention can improve the conductivity of the oxide dust of the rolling mill in the on-site working environment, thereby extending the service life of the on-site valve group and electrical components and reducing the damage rate of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall schematic diagram of a high-efficiency rolling mill water vapor mixing micro-mist dust removal system of the present invention.

[0018] Figure 2 It is a front view of the host pump station mechanism of the present invention.

[0019] Figure 3 It is a structural schematic diagram of the micro mist valve group unit of the present invention.

[0020] Figure 4 It is a structural schematic diagram of the dust suppression spray unit of the present invention. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0022] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a high-efficiency rolling mill water-steam mixed micro-mist dust removal system includes: Water supply equipment 1, used for providing water; Air supply equipment 2, used for providing compressed air; The host pump station mechanism 3 includes a water tank 301, a booster pump 302, a wafer-type swing check valve 303, an auxiliary return pipe 304, a water control regulating valve 305, a main water delivery pipe 306, a pressure transmitter 307, a water injection pipe 308, a self-cleaning filter 309, an air injection pipe 310, a support 311, a gas pressure reducing valve 312, and a base 313. The water tank 301 is arranged on the upper surface of the base 313, the booster pump 302 is installed on the top of the water tank 301, the input end of the booster pump 302 is located in the water tank 301, the output end of the booster pump 302 is connected to the main water pipe 306 through the clamp-type swing check valve 303, the auxiliary return pipe 304 is provided with a first port 304a, a second port 304b and a third port 304c, the first port 304a and the second port 304b are respectively connected to the side of the water tank 301, the height of the first port 304a is greater than the height of the second port 304b, the height of the second port 304b is equal to the height of the third port 304c, the third port 304c is connected to the main water pipe 306 through the water control regulating valve 305, the pressure transmitter 307 is arranged on the main water pipe 306, and the pressure transmitter 307 is provided with a PIC control module 314 which is communicatively connected with the water control regulating valve 305, One end of the water injection pipe 308 is connected to the water supply device 1, and the other end of the water injection pipe 308 is arranged in the water tank 301. The self-cleaning filter 309 is arranged on the water injection pipe 308. The gas injection pipe 310 is arranged on the base 313 through the support 311. One end of the gas injection pipe 310 is connected to the gas supply device 2, and the gas pressure reducing valve 312 is arranged on the gas injection pipe 310. The micro mist valve assembly unit 4 includes a plurality of water distribution units 5 and a plurality of gas distribution units 6. The plurality of water distribution units 5 are arranged in an array, and a gas distribution unit 6 is arranged between every two of the water distribution units 5. The water distribution unit 5 includes a primary water distribution pipe 501, a secondary water distribution pipe 502, a tertiary water distribution pipe 503, a quaternary water distribution pipe 504, and a butterfly valve assembly 505. The secondary water distribution pipe 502 is provided with two and is respectively connected to the main water delivery pipe 306 through the primary water distribution pipe 501. The two secondary water distribution pipes 50 2 are respectively located on both sides of the primary water distribution pipe 501, and the center lines of the two are not on the same straight line, the three-level water distribution pipe 503 is provided with two and one-to-one correspondence is connected to the two secondary water distribution pipes 502, the four-level water distribution pipe 504 is provided with a plurality of, the plurality of four-level water distribution pipes 504 are arranged in parallel, and one end thereof is respectively connected to the upper side of the three-level water distribution pipe 503, the butterfly valve assembly 505 is arranged on the primary water distribution pipe 501, the gas distribution unit 6 includes the primary gas distribution pipe 601, the secondary gas distribution pipe 602, the three-level gas distribution pipe 603, four-stage air distribution pipe 604, butterfly valve assembly 2 605, the two-stage air distribution pipe 602 is provided with two and is respectively connected to the other end of the air injection pipe 310 through the first-stage air distribution pipe 601, the two second-stage air distribution pipes 602 are respectively located on both sides of the first-stage air distribution pipe 601, and the center lines of the two are not on the same straight line, the three-stage air distribution pipe 603 is provided with two and is connected to the two second-stage air distribution pipes 602 in a one-to-one correspondence, the four-stage air distribution pipe 604 is provided with a plurality of, the plurality of the four-stage air distribution pipes 604 are arranged in parallel, and one of them The ends are respectively connected to the lower side of the three-level air distribution pipe 603, the butterfly valve assembly 2 605 is arranged on the first-level air distribution pipe 601, and in any adjacent water distribution unit 5 and air distribution unit 6, the three-level water distribution pipe 503 of the water distribution unit 5 and the three-level air distribution pipe 603 of the air distribution unit 6 are arranged in parallel, and the other end of the four-level water distribution pipe 504 of the water distribution unit 5 extends to the top of the three-level air distribution pipe 603 of the air distribution unit 6, and the other end of the four-level air distribution pipe 604 of the air distribution unit 6 extends to the bottom of the three-level water distribution pipe 503 of the water distribution unit 5; The dust suppression spray unit 7 is provided with a plurality of dust suppression spray units 7, and the dust suppression spray unit 7 includes a water hose 701, an air hose 702 and an atomizing nozzle 703. One end of the water hose 701 is connected to the other end of the four-stage water distribution pipe 504, and one end of the air hose 702 is connected to the other end of the four-stage air distribution pipe 604. The other ends of the water hose 701 and the air hose 702 are both connected to the top of the atomizing nozzle 703.

[0023] In this embodiment, the water supply equipment 1 can collect and transport the dirty circulating water used in the steel plant. The dirty circulating water is filtered through the self-cleaning filter 309 to obtain clean water, or the water supply equipment 1 is directly connected to the clean water source to provide water for the host pump station mechanism 3. The clean water is transported through the water injection pipe 308 and stored in the water tank 301. Then, after the clean water is pressurized by the booster pump 302, it is transported to the micro-mist valve group unit 4 through the main water pipe 306. The water diversion and diffusion are controlled by the water distribution unit 5 in the micro-mist valve group unit 4. The compressed air provided by the air supply equipment 2 is injected through the air injection pipe 308. The water and compressed air are transported through the pipe 310, and the gas pressure reducing valve 312 is used to adjust the output flow rate and output pressure of the compressed air. Finally, the dust suppression spray unit 7 realizes the mixing of water and compressed air. The mixed medium of water and compressed air will form water atomized water droplets through the atomizing nozzle 703, and sprayed into the dust escape area during rolling, especially in the dust generation area between the rolling rollers and the strip to form a thicker micro-mist, so that a large amount of dust generated by the rolling operation is wrapped in the water mist, and the water mist and the dust are inelasticly collided, so that the dust is absorbed by the water mist, so as to achieve the purpose of greatly reducing the dust concentration.

[0024] It should be noted that the pressure transmitter 307 is used to detect the water pressure in the main water pipe 306 in real time, that is, the final output pressure of the actual water. If the water pressure is too high, the pressure transmitter 307 will send information to the PIC control module 314, and the PIC control module 314 will open the water control regulating valve 305, and part of the water in the main water pipe 306 will return to the water tank 301 through the auxiliary return pipe 304 to reduce the water pressure. Due to the height difference between the first port 304a and the second port 304b, the water overflowing from the second port 304a will form a resistance with the return water, slowing down the speed of water returning from the second port 304b, and part of the return water will be lifted to the first port 304a and returned to the water tank 301, ensuring that the output flow of water will not suddenly decrease significantly, thereby realizing the gradual regulation of the output flow and output pressure of water, without interrupting the spraying operation and repeatedly adjusting the booster pump 302, ensuring the service life of the booster pump 302, ensuring the stable operation of dust removal, and improving the dust removal efficiency.

[0025] It should be noted that, since multiple water distribution units 5 are arranged and distributed, and an air distribution unit 6 is arranged between every two of the water distribution units 5, the micro-mist valve group unit 4 can form a mesh spray structure composed of multiple groups of water distribution units 5 and air distribution units 6, thereby achieving a large range of aerosol coverage in the factory building, while ensuring normal mixing of water vapor. In the process of water transferring from the four-level water distribution pipe 504 to the air supply hose 702 and air transferring from the four-level air distribution pipe 604 to the water supply hose 701, the relative position restrictions of the four-level water distribution pipe 504 and the three-level air distribution pipe 603, and the relative position restrictions of the four-level air distribution pipe 604 and the three-level water distribution pipe 503 can reduce the jitter amplitude of each pipeline and extend the service life of the water distribution unit 5 and the air distribution unit 6.

[0026] It should be noted that the butterfly valve assembly 505 includes a manual butterfly valve 505a and a pneumatic butterfly valve 505b, which are used to control the water injection amount of the water distribution unit 5, which can be divided into manual adjustment and remote adjustment; similarly, the butterfly valve assembly 2 605 includes a manual butterfly valve 2 605a and a pneumatic butterfly valve 2 605b, which are used to control the gas injection amount of the gas distribution unit 6.

[0027] The host pump station mechanism 3 further includes a water increase pipe 315 and a pneumatic regulating valve 316. The water increase pipe 315 is arranged on the outside of the water tank 301. One end of the water increase pipe 315 is connected to the side of the water tank 301, and the other end of the water increase pipe 315 is connected to the inside of the booster pump 302. The pneumatic regulating valve 316 is arranged on the water increase pipe 315. The host pump station mechanism 3 is additionally equipped with a water increase pipe 315 to supply or replenish water to the booster pump 302, instead of only pumping water from the input end of the booster pump 302. The pneumatic regulating valve 316 is used to control the conduction or closing of the water increase pipe 315 in real time, and the output flow of water is stably increased according to the dust concentration at the site to ensure sufficient aerosol to treat the dust.

[0028] There are two booster pumps 302 and two wafer-type swing check valves 303, and the other end of the water booster pipe 315 is connected to the inside of the two booster pumps 302 through the diversion pipe 317. The two booster pumps 302 can expand the output pressure control range of water. At the same time, according to the dust situation on site, one or two booster pumps 302 can be selected, or the two booster pumps 302 can be adjusted to form different pressurization effects on water. The combined regulation of the two wafer-type swing check valves 303 can also expand the output flow control range of water.

[0029] The side of the water-increasing pipe 315 is connected to a measuring pipe 318, and a pressure gauge 319 is provided on the measuring pipe 318. The pressure gauge 319 is used to detect the internal pressure state of the water-increasing pipe 315, so that the staff can adjust the opening and closing of the pneumatic regulating valve 316 according to the specific pressure data, control the pressure difference between the water-increasing pipe 315 and the booster pump 302, and thus realize stable and smooth additional water supply.

[0030] The host pump station mechanism 3 further includes a liquid level transmitter 320, a solenoid valve 322 and a liquid pressure reducing valve 323. The liquid level transmitter 320 is provided with an LIC control module 321. The measuring end of the liquid level transmitter 320 is arranged in the water tank 301. The solenoid valve 322 and the liquid pressure reducing valve 323 are arranged on the water injection pipe 308. The solenoid valve 322 is connected to the LIC control module 321 for communication. The liquid level transmitter 320 is used to detect the liquid level in the water tank 301 and confirm the water storage amount in the water tank 301. The liquid level transmitter 320 feeds back the liquid level data in the water tank 320 to the LIC control module 321. The LIC control module 321 adjusts the opening of the solenoid valve 322 according to the liquid level data to ensure that there is enough water storage in the water tank 301 to supply and form aerosol. The liquid pressure reducing valve 323 is used to reduce the water pressure of the water flow so as to form a lower water storage pressure in the water tank 301.

[0031] A manual ball valve 324 is provided on the water injection pipe 308, and a branch pipe 325 is connected to the side of the water injection pipe 308 and located between the manual ball valve 324 and the solenoid valve 322. A float valve 326 is provided at the end of the branch pipe 325 away from the water injection pipe 308 and is located in the water tank 301. The water supply equipment 2 is connected to one end of the air injection pipe 308 through a manual ball valve 5 337. A manual ball valve 2 327 is provided on the auxiliary return pipe 304, and a manual ball valve 4 336 is provided on the air injection pipe 310. Manual ball valve 1 324 allows operators to manually adjust the water delivery of the water injection pipe 308, and cooperates with the use of the solenoid valve 322 to adjust the water delivery status. The branch pipe 325 is an additional water injection pipe to ensure the water storage capacity inside the water tank 301. At the same time, the float valve 326 can be opened or closed according to the liquid level in the water tank 301, thereby distinguishing the solenoid valve 322 that needs to be detected and started by the equipment, and realizing another kind of automatic water replenishment; manual ball valve 2 327 allows operators to manually adjust the water flow in the auxiliary return pipe 304, and cooperates with the use of the water control regulating valve 305 to ensure the stable execution of the water reflux treatment; manual ball valve 4 336 is used to manually adjust the air flow in the water injection pipe 308 to quickly adapt to the on-site conditions.

[0032] The host pump station mechanism 3 also includes a drainage manifold 328, a drainage branch pipe 1 329, a drainage branch pipe 2 330, a drainage branch pipe 3 331, a drainage branch pipe 4 332, a spring-loaded safety valve 333, and a manual ball valve 334. One end of the drainage branch pipe 1 329 and the drainage branch pipe 2 330 is connected to the side of the water tank 301, and the other end of the drainage branch pipe 1 329 and the drainage branch pipe 2 330 is connected to the side of the drainage manifold 328. The high end of the drainage branch pipe 1 329 The height is greater than the height of one end of the drainage branch pipe 2 330, the manual ball valve 334 is arranged on the drainage branch pipe 2 330, the self-cleaning filter 309 is provided with a filter discharge valve 335, the filter discharge valve 335 is connected to the side of the drainage manifold 328 through the drainage branch pipe 331, the water injection pipe 308 and the drainage manifold 328 are connected to each other through the drainage branch pipe 4 332, and the spring safety valve 333 is arranged on the drainage branch pipe 4 332.

[0033] The drainage branch pipe 1 329 and the drainage branch pipe 2 330 are both used to discharge the water in the water tank 301, wherein the drainage branch pipe 1 329 is used to prevent the water storage in the water tank 301 from being too much, thereby ensuring the normal backflow of water in the main water pipe 306, and the drainage branch pipe 2 330 is used to completely discharge the water in the water tank 301, and the manual ball valve 334 is used to control the conduction or closing of the drainage branch pipe 2 330 to prevent the water tank 301 from being contaminated by scale due to long-term water accumulation; the drainage branch pipe 3 331 is used to discharge the accumulated water inside the self-cleaning filter 309, and the filter discharge valve 335 set inside the self-cleaning filter 309 controls the conduction or closing of the drainage branch pipe 3 331; the drainage branch pipe 4 332 is used to discharge the accumulated water inside the water injection pipe 308, and the conduction or closing of the drainage branch pipe 4 332 is controlled by the spring-type safety valve 333; the drainage confluence pipe 328 is used to collect and discharge the accumulated water.

[0034] It also includes a medicine barrel 8, a medicine delivery pipe 9 and a medicine pump 10. The medicine barrel 8 is connected to the main water delivery pipe 306 through the medicine delivery pipe 9, and the medicine pump 10 is arranged on the medicine delivery pipe 9. The medicine barrel 8 is used to store medicine that can strongly adsorb dust, and pump the medicine into the main water delivery pipe 306 through the medicine delivery pipe 9 and the medicine pump 10 to achieve a better dust removal effect.

[0035] The water distribution unit 5 further includes a drainage branch pipe 506 and a drainage valve 507. The end of the drainage branch pipe 506 is connected to the primary water distribution pipe 501. The drainage valve 507 is arranged on the drainage branch pipe 506. The gas distribution unit 6 further includes an exhaust branch pipe 606 and an exhaust valve 607. The end of the exhaust branch pipe 606 is connected to the primary air distribution pipe 601. The exhaust valve 607 is arranged on the exhaust branch pipe 606. The drainage branch pipe 506 is used to discharge part of the water being input into the water distribution unit 5. By adjusting the opening of the drainage valve 507, the output flow rate and output pressure of the water can be manually reduced. Similarly, the exhaust branch pipe 606 is used to discharge part of the water being input into the gas distribution unit 6. By adjusting the opening of the exhaust valve 607, the output flow rate and output pressure of the air can be manually reduced, thereby realizing the adaptive mixing of water vapor and achieving a good aerosol spray effect.

Claims

1. An efficient rolling mill water vapor mixed micro mist dust removal system, characterized by: Included are: Water supply equipment, used to provide water; Air supply equipment, used to provide compressed air; The main engine pump station mechanism includes a water tank, a booster pump, a wafer-type swing check valve, an auxiliary return pipe, a water control regulating valve, a main water delivery pipe, a pressure transmitter, a water injection pipe, a self-cleaning filter, an air injection pipe, a support, a gas pressure reducing valve, and a base. The water tank is arranged on the upper surface of the base, the booster pump is installed on the top of the water tank, the input end of the booster pump is located in the water tank, the output end of the booster pump is connected to the main water pipe through a clamp-type swing check valve, the auxiliary return pipe is provided with a first port, a second port and a third port, the first port and the second port are respectively connected to the side of the water tank, the height of the first port is greater than the height of the second port, the height of the second port is equal to the height of the third port, the third port is connected to the main water pipe through a water control regulating valve, the pressure transmitter is arranged on the main water pipe, and the pressure transmitter is provided with a PIC control module which is communicatively connected with the water control regulating valve. One end of the water injection pipe is connected to the water supply equipment, the other end of the water injection pipe is arranged in the water tank, the self-cleaning filter is arranged on the water injection pipe, the gas injection pipe is arranged on the base through the support, one end of the gas injection pipe is connected to the gas supply equipment, and the gas pressure reducing valve is arranged on the gas injection pipe; A micro-mist valve assembly unit, the micro-mist valve assembly unit includes a plurality of water distribution units and a plurality of gas distribution units, the plurality of water distribution units are arranged in an array, and an gas distribution unit is arranged between every two of the water distribution units, the water distribution unit includes a primary water distribution pipe, a secondary water distribution pipe, a tertiary water distribution pipe, a quaternary water distribution pipe, and a butterfly valve assembly. The secondary water distribution pipe is provided with two and is respectively connected to the main water supply pipe through the primary water distribution pipe. The two secondary water distribution pipes are respectively located on both sides of the primary water distribution pipe, and the center lines of the two are not on the same straight line. The tertiary water distribution pipe is provided with two and is connected to the two secondary water distribution pipes in a one-to-one correspondence. The quaternary water distribution pipe is provided with a plurality of, and the plurality of the quaternary water distribution pipes are arranged in parallel, and one end thereof is respectively connected to the upper side of the tertiary water distribution pipe. The butterfly valve assembly is arranged on the primary water distribution pipe, and the gas distribution unit includes a primary gas distribution pipe, a secondary gas distribution pipe, a tertiary ... An air distribution pipe, a four-stage air distribution pipe, and a second butterfly valve assembly. The two-stage air distribution pipes are provided with two and are respectively connected to the other end of the air injection pipe through the first-stage air distribution pipe. The two second-stage air distribution pipes are respectively located on both sides of the first-stage air distribution pipe, and the center lines of the two are not on the same straight line. The three-stage air distribution pipes are provided with two and are connected to the two second-stage air distribution pipes one by one. The four-stage air distribution pipes are provided with multiple ones, and the multiple four-stage air distribution pipes are arranged in parallel, and one end thereof is respectively connected to the lower side of the three-stage air distribution pipe. The second butterfly valve assembly is arranged on the first-stage air distribution pipe. In any adjacent water distribution unit and air distribution unit, the three-stage water distribution pipe of the water distribution unit and the three-stage air distribution pipe of the air distribution unit are arranged in parallel, and the other end of the four-stage water distribution pipe of the water distribution unit extends to the top of the three-stage air distribution pipe of the air distribution unit, and the other end of the four-stage air distribution pipe of the air distribution unit extends to the bottom of the three-stage water distribution pipe of the water distribution unit. A dust suppression spray unit, wherein a plurality of dust suppression spray units are provided, and the dust suppression spray unit comprises a water hose, an air hose and an atomizing nozzle, wherein one end of the water hose is connected to the other end of the four-stage water distribution pipe, and one end of the air hose is connected to the other end of the four-stage air distribution pipe, and the other ends of the water hose and the air hose are both connected to the top of the atomizing nozzle.

2. The high-efficiency rolling mill water-steam mixed micro-mist dust removal system according to claim 1 is characterized by: The host pump station mechanism also includes a water increase pipe and a pneumatic regulating valve. The water increase pipe is arranged on the outside of the water tank, one end of the water increase pipe is connected to the side of the water tank, and the other end of the water increase pipe is connected to the inside of the booster pump. The pneumatic regulating valve is arranged on the water increase pipe.

3. The high-efficiency rolling mill water-steam mixed micro-mist dust removal system according to claim 2 is characterized by: The booster pumps and the wafer-type swing check valves are provided with two, and the other end of the water booster pipe is connected to the inside of the two booster pumps through a diversion pipe.

4. The high-efficiency rolling mill water-steam mixed micro-mist dust removal system according to claim 2 or 3 is characterized in that: The side of the water increase pipe is connected with a measuring pipe, and the measuring pipe is provided with a pressure measuring gauge.

5. The high-efficiency rolling mill water-steam mixed micro-mist dust removal system according to claim 1 is characterized by: The host pump station mechanism also includes a liquid level transmitter, a solenoid valve and a liquid pressure reducing valve. The liquid level transmitter is provided with an LIC control module. The measuring end of the liquid level transmitter is arranged in a water tank. The solenoid valve and the liquid pressure reducing valve are arranged on a water injection pipe. The solenoid valve is communicatively connected with the LIC control module.

6. The high-efficiency rolling mill water-steam mixed micro-mist dust removal system according to claim 5 is characterized by: A manual ball valve 1 is provided on the water injection pipe, a branch pipe is provided on the side of the water injection pipe and is connected between the manual ball valve 1 and the solenoid valve, a float valve is provided at the end of the branch pipe away from the water injection pipe and is located in the water tank, the water supply equipment is connected to one end of the air injection pipe through a manual ball valve 5, a manual ball valve 2 is provided on the auxiliary return pipe, and a manual ball valve 4 is provided on the air injection pipe.

7. The high-efficiency rolling mill water-steam mixed fine mist dust removal system according to claim 1 is characterized by: The host pump station mechanism also includes a drainage manifold, a drainage branch pipe 1, a drainage branch pipe 2, a drainage branch pipe 3, a drainage branch pipe 4, a spring-loaded safety valve, and a manual ball valve 3. One end of the drainage branch pipe 1 and the drainage branch pipe 2 are connected to the side of the water tank, and the other ends of the drainage branch pipe 1 and the drainage branch pipe 2 are connected to the side of the drainage manifold. The height of one end of the drainage branch pipe 1 is greater than the height of one end of the drainage branch pipe 2. The manual ball valve 3 is arranged on the drainage branch pipe 2. A filter discharge valve is arranged in the self-cleaning filter. The filter discharge valve is connected to the side of the drainage manifold through the drainage branch pipe 3. The water injection pipe and the drainage manifold are interconnected through the drainage branch pipe 4. The spring-loaded safety valve is arranged on the drainage branch pipe 4.

8. The high-efficiency rolling mill water-steam mixed micro-mist dust removal system according to claim 1 is characterized by: It also includes a medicine barrel, a medicine delivery tube and a medicine extraction pump. The medicine barrel is connected to the main water delivery pipe through the medicine delivery tube, and the medicine extraction pump is arranged on the medicine delivery tube.

9. The high-efficiency rolling mill water-steam mixed micro-mist dust removal system according to claim 1 is characterized by: The water distribution unit also includes a drainage branch pipe five and a drainage valve. The end of the drainage branch pipe five is connected to the primary water distribution pipe, and the drainage valve is arranged on the drainage branch pipe five. The gas distribution unit also includes an exhaust branch pipe and an exhaust valve. The end of the exhaust branch pipe is connected to the primary gas distribution pipe, and the exhaust valve is arranged on the exhaust branch pipe.

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