Online dust removal device for steel rolling guide

Abstract

The invention relates to the technical field of guide dust removal, in particular to a steel rolling guide online dust removal device. An air extractor is arranged at one end of the fixed pipe; the multiple branch pipes are all communicated with the fixed pipe, one end of each branch pipe is provided with a gas guide shell, the gas guide shells are located at outlets of the adjacent guides, sliding plates are slidably connected into the gas guide shells, and the sliding plates are used for blocking part of the branch pipes; the water conveying pipe is installed on the fixed pipe, a plurality of water mist nozzles are arranged in the fixed pipe, and the water mist nozzles in the fixed pipe are all communicated with the water conveying pipe. The branch pipes are semi-blocked through the sliding plate, only the branch pipes at the guide and guard positions where steel plates pass are all opened, the air exhaust strength of the guide and guard positions in the working state is increased, the dust capturing effect of the branch pipes is improved, workshop air pollution is prevented, and normal operation of equipment and health of staff are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of guide guard dust removal, and in particular to an online dust removal device for a steel rolling guide guard. Background Art

[0002] The steel rolling guide is a key device used to guide high-temperature steel to pass through the rollers stably, ensuring that the steel enters and leaves the rollers in the correct path. During the steel rolling process, the high-temperature steel is guided by the guide and discharged from the guide outlet. In this process, the oxide layer on the surface of the steel and the friction between the steel chips and the guide outlet generate a large amount of dust. This dust not only pollutes the workshop environment, but also affects the normal operation of the equipment and the health of employees. For this reason, an exhaust dust removal device is usually used in the existing steel rolling process to deal with the fly ash generated at multiple guide outlets.

[0003] However, during the operation of the existing guide and guard dust removal device, as the steel passes through each guide and guard in turn during the transportation process, the dust generated at the guide and guard outlet will spread rapidly, and the air suction force of the existing dust removal device at the guide and guard outlet is not sufficient to capture all the dust, resulting in some dust spreading into the workshop air, polluting the workshop air, affecting the normal operation of the equipment and the health of employees. Summary of the invention

[0004] In view of the problem that it is difficult for a dust removal device to capture all the dust generated at a guide outlet, the present invention provides an online dust removal device for a steel rolling guide.

[0005] The technical solution is as follows: An online dust removal device for a steel rolling guide, comprising: a fixed pipe, one end of which is provided with an exhaust fan; a plurality of branch pipes, all of which are connected to the fixed pipe, the branch pipes are provided with an air guide shell, the air guide shell is located at the outlet of an adjacent guide, a sliding plate is slidably connected in the air guide shell, and the sliding plate is used to block part of the branch pipe; a water pipe, installed on the fixed pipe; a plurality of steel plate detection mechanisms, the number of which is the same as the number of the branch pipes, which are respectively arranged on the corresponding sliding plates, and are used to prevent the branch pipes from being blocked by the sliding plates only when steel plates are present in the adjacent guide pipes; a plurality of switching mechanisms, the number of which is the same as the number of the branch pipes, which are all arranged in the fixed pipe, and are used to switch different cooling methods according to the size of the airflow in the branch pipes.

[0006] As a preferred embodiment of the present invention, the inner diameter of the branch pipe adjacent to the guide part that contacts the high-temperature steel plate is larger than the inner diameters of the other branch pipes, so as to focus on exhausting and cleaning the guide part that generates a lot of dust.

[0007] As a preferred embodiment of the present invention, the steel plate detection mechanism includes: a swing rod, rotatably connected to the sliding plate, the swing rod is provided with a sliding groove, a U-shaped rod is provided in the air guide shell, and the U-shaped rod slides in the sliding groove of the swing rod; a sliding rod, slidably connected to the lower end of the swing rod, and a first spring is fixed between the sliding rod and the swing rod; a delay component, arranged in the air guide shell, for extending the time for the sliding plate to move and reset.

[0008] As a preferred embodiment of the present invention, the delay assembly includes: a buffer cylinder, fixedly connected in the air guide shell, and filled with hydraulic oil; a sliding straight rod, slidably connected in the buffer cylinder, the sliding straight rod is fixed to the sliding plate, a second spring is fixed between the sliding straight rod and the buffer cylinder, and two through holes are provided on the sliding straight rod, and the through holes of the sliding straight rod are used to delay its moving speed in the buffer cylinder.

[0009] As a preferred embodiment of the present invention, the two through holes on the sliding straight rod are one large and one small, and a one-way valve is provided in the large through hole to enable the sliding plate to move quickly when the blockage of the branch pipe is released, and to move slowly when the blockage of the branch pipe is restored.

[0010] As a preferred embodiment of the present invention, the switching mechanism includes: a fixed shell, fixedly connected to the fixed pipe, the fixed shell is connected to the water pipe, the lower side of the fixed shell is connected to a first nozzle and a second nozzle, the first nozzle is directly opposite to the connection between the branch pipe and the fixed pipe; a sliding bent plate, slidably connected to the fixed shell, the sliding bent plate is provided with two through holes, and the through holes on the sliding bent plate are used to control the connection state of the first nozzle and the second nozzle; a flow rate detection component, arranged in the fixed pipe, for detecting the flow rate of the gas in the branch pipe; a control component, arranged in the fixed pipe, for controlling the movement of the sliding bent plate according to the gas flow rate in the branch pipe.

[0011] As a preferred embodiment of the present invention, the flow rate detection assembly includes: a support plate installed in the fixed tube, a rotating fan blade is rotatably connected to the support plate, and the rotating fan blade is opposite to the connecting point between the branch tube and the fixed tube; a rotating disk is fixedly connected to the rotating axis of the rotating fan blade, and a plurality of circumferentially distributed sliding blocks are slidably connected in the rotating disk, and a first tension spring is fixedly connected between the sliding block and the rotating disk.

[0012] As a preferred embodiment of the present invention, the control component includes: a first telescopic rod, fixedly connected in the fixed tube, the telescopic end of the first telescopic rod is fixedly connected to the sliding bent plate; a rotating ring, rotatably connected to the rotating disk, the rotating ring and the rotating disk form a cavity, the first telescopic rod is connected to a first conduit, the first conduit is connected to the cavity formed by the rotating ring and the rotating disk, and the cavity formed by the first telescopic rod, the first conduit, the rotating ring and the rotating disk is filled with hydraulic oil; a limit pin, slidably connected to the fixed shell, a third spring is fixedly connected between the limit pin and the fixed shell, a blind hole is provided on the sliding bent plate, and the limit pin limits the sliding bent plate through the blind hole.

[0013] As a preferred embodiment of the present invention, it also includes: a plurality of cleaning mechanisms, the number of which is the same as the number of the branch pipes, all of which are arranged in the fixed pipe, and are used to flush the dust accumulated in the fixed pipe, the cleaning mechanism includes: a fixed column, fixedly connected to the fixed pipe, a guide cavity is arranged in the fixed column, the guide cavity of the fixed column is connected to a second conduit, and the second conduit is connected to the water pipe; a rotating shell, rotatably and slidably connected to the corresponding fixed column, the rotating shell is connected to the guide cavity of the fixed column, and the side wall of the rotating shell is connected to a water curtain nozzle; a fixed bent rod, fixedly connected to the corresponding rotating disk, the fixed bent rod is used to drive the rotating shell to rotate; a synchronization component, arranged in the fixed pipe, and used to control the water curtain nozzles on all the rotating shells to rotate and spray water when there is no steel plate in all the guides.

[0014] As a preferred embodiment of the present invention, the synchronization component includes: a sliding long plate, which is slidably connected to the fixed tube, the sliding long plates in different synchronization components are fixedly connected to each other, a plurality of sliding pins are slidably connected to the fixed tube, a fourth spring is fixedly connected between the sliding pin and the fixed tube, and the sliding pin is used to hinder the movement of the sliding long plate; a plurality of second telescopic rods, the number of which is the same as the number of branch pipes, the telescopic end of the second telescopic rod is connected to the sliding long plate by a second tension spring, the second telescopic rod is connected to the adjacent first telescopic rod by a pipeline, and hydraulic oil is filled in the second telescopic rod; a plurality of fixed bent plates, the number of which is the same as the number of branch pipes, all of which are fixedly connected to the sliding long plate, the sliding long plate and the fixed column are limited to rotate, and a through hole is provided on the fixed bent plate, and the through hole on the fixed bent plate is used to control the communication state of the second conduit.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: 1. The present invention semi-blocks the branch pipe by a sliding plate, and only opens the branch pipe at the guide where the steel plate passes, thereby increasing the air extraction force at the guide in working state, improving the dust capture effect of the branch pipe, preventing air pollution in the workshop, and ensuring the normal operation of the equipment and the health of employees.

[0016] 2. The present invention delays the speed of the sliding plate to resume semi-blocking of the branch pipe by slowly moving the sliding straight rod in the delay assembly in the buffer cylinder to reset, so that the branch pipe can maintain high-speed air extraction for a period of time after leaving the steel plate on the lower side, greatly reducing the diffusion effect of dust generated at the guide and guard, thereby ensuring the stability of the dust removal effect of the device.

[0017] 3. The present invention switches the use status of the first nozzle and the second nozzle by moving the sliding bent plate in the switching mechanism in the fixed shell, and performs targeted spraying on the airflow containing high-temperature dust, thereby improving the cooling and cleaning efficiency of the device for dust.

[0018] 4. The present invention cooperates with the sliding long plate and the fixed bent rod in the cleaning mechanism to enable the water curtain nozzle at the rotating shell to spray a rotating water curtain, thereby completing the focused cleaning of dust attached to the inner wall of the fixed tube, reducing the possibility of dust adsorbing on the inner wall of the fixed tube, and extending the service life of the parts in the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of the parts of the branch pipe and the water pipe of the present invention; Figure 3 It is a cross-sectional view of the parts of the branch pipe and the air guide housing of the present invention; Figure 4 It is a cross-sectional view of the parts of the sliding plate and the swing rod of the present invention; Figure 5 It is a cross-sectional view of the parts of the buffer cylinder and the sliding straight rod of the present invention; Figure 6 It is a three-dimensional structural schematic diagram of the water delivery pipe and the parts of the fixed shell of the present invention; Figure 7 It is a three-dimensional structural schematic diagram of the parts at the first telescopic rod and the first conduit of the present invention; Figure 8 It is a cross-sectional view of the parts of the fixed shell and the sliding bent plate of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the rotating ring and the parts at the first conduit of the present invention; Fig.10 It is a cross-sectional view of the parts of the fixed column and the rotating shell of the present invention; Fig.11 It is a schematic diagram of the three-dimensional structure of the sliding long plate and the parts of the second telescopic rod of the present invention; Fig.12 It is a schematic diagram of the three-dimensional structure of the parts at the sliding long plate and the fixed bent plate of the present invention.

[0020] The accompanying drawings are marked as: 1-fixed pipe, 2-vacuum fan, 3-branch pipe, 4-air guide shell, 5-sliding plate, 6-water pipe, 201-swing rod, 202-sliding rod, 301-buffer cylinder, 302-sliding straight rod, 401-fixed shell, 402-first nozzle, 403-second nozzle, 404-sliding bent plate, 501-support plate, 502-rotating fan blades, 503-rotating disk, 504-sliding block, 601-first telescopic rod, 602-rotating ring, 603-first conduit, 604-limiting pin, 701-fixed column, 702-second conduit, 703-rotating shell, 704-fixed bent rod, 801-sliding long plate, 802-sliding pin, 803-second telescopic rod, 804-fixed bent plate. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1 -Attached Fig.12 , the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0022] Example 1: In the existing steel rolling process, high-temperature steel passes through multiple guides in sequence, and the dust removal device simultaneously extracts air at the outlets of multiple guides, resulting in the dust removal device being unable to capture all the dust generated by the steel at the guide outlets, causing the dust generated at the guide outlets to diffuse into the workshop air, affecting the normal operation of the equipment and the health of employees.

[0023] A steel rolling guide online dust removal device, please refer to the attached Figure 1 -Attached Figure 4As shown, it includes: a fixed pipe 1, one end of which is provided with an air extractor 2; a plurality of branch pipes 3, all of which are connected to the fixed pipe 1, and the branch pipe 3 is provided with an air guide shell 4, and the air guide shell 4 is located at the outlet of the adjacent guide, and a sliding plate 5 is slidably connected in the air guide shell 4, and the sliding plate 5 is used to block part of the branch pipe 3; a water pipe 6, which is installed on the fixed pipe 1; a plurality of steel plate detection mechanisms, the number of which is the same as the number of branch pipes 3, which are respectively arranged on the corresponding sliding plates 5, and are used to prevent the branch pipe 3 from being blocked by the sliding plates 5 only when there are steel plates in the adjacent guide; a plurality of switching mechanisms, the number of which is the same as the number of branch pipes 3, and are all arranged in the fixed pipe 1, and are used to switch the branch pipe 3 according to the number of steel plates in the branch pipe 3. The size of the airflow switches different cooling modes. First, the inner diameter of the branch pipe 3 adjacent to the guide part in contact with the high-temperature steel plate is larger than the inner diameter of the other branch pipes 3, which is used to focus on vacuuming and cleaning the guide part that generates a lot of dust. The steel plate detection mechanism includes: a swing rod 201, which is rotatably connected to the sliding plate 5, and a slide groove is provided on the swing rod 201. A U-shaped rod is provided in the air guide shell 4, and the U-shaped rod slides in the slide groove of the swing rod 201; a sliding rod 202, which is slidably connected to the lower end of the swing rod 201, and a first spring is fixed between the sliding rod 202 and the swing rod 201; a delay component, which is provided in the air guide shell 4, and is used to extend the time for the sliding plate 5 to move and reset.

[0024] In the above scheme, the problem that it is difficult for the dust removal device to capture all the dust generated at the outlet of each guide is solved; a control panel is provided on one side of the fixed pipe 1 (which is an existing mechanism, not shown in the figure), the number of branch pipes 3 is the same as the number of guides, and the number of branch pipes 3 in the device can be adjusted according to the number of guides in the existing steel rolling process, and a rolling mill is provided on the right side of each guide (which is an existing device for rolling steel, not shown in the figure), and the inlet of the rolling mill is located below the air guide shell 4. The number of branch pipes 3 in the device is The amount is set to three, the air pump 2 is located at the left end of the fixed pipe 1, and a water storage pipe is provided at the connection between the air pump 2 and the fixed pipe 1, which is used to store the water flowing at the bottom of the fixed pipe 1 to prevent the water from entering the air pump 2. The leftmost guide is the first to contact the high-temperature steel. The inner diameter of the leftmost branch pipe 3 is the largest. The water delivery pipe 6 is externally connected to a water pump (an existing mechanism, not shown in the figure, used to continuously inject water into the water delivery pipe 6). The water pump and the air pump 2 are electrically connected to the control panel. The connection between the branch pipe 3 and the fixed pipe 1 is located above and below the fixed pipe 1. The middle part of the direction is formed by water mist to cool the high-temperature dust, and a water flow carrying dust is formed at the bottom of the fixed pipe 1. The dust generated at each guide passes through the air guide shell 4, the branch pipe 3 and the fixed pipe 1 with the air flow, and is collected at the exhaust fan 2. When there is no steel passing through the guide, the sliding plate 5 blocks half of the flow area of ​​the gas in the branch pipe 3. Initially, all the branch pipes 3 are half-blocked by the sliding plate 5. When steel passes through a certain guide, the sliding plate 5 at that location releases the blocking of the branch pipe 3, and the flow rate of the gas in the branch pipe 3 at that location increases. The flow rate of the gas in the branch pipe 3 is greater than the flow rate of the gas in the branch pipe 3 when all the branch pipes 3 are blocked. In the process of the steel passing through multiple guides in sequence, the steel is only in contact with one guide at the same time. When one branch pipe 3 is opened, the other branch pipes 3 are in a semi-blocked state, and the flow rate of the gas in the other branch pipes 3 is reduced. At this time, the flow rate of the gas in the branch pipe 3 in the semi-blocked state is less than the flow rate of the gas in the branch pipe 3 when all the branch pipes 3 are blocked, which enhances the capture effect of the dust generated at the guide outlet, reduces the pollution of the dust to the workshop environment, and ensures the life and health of the staff.

[0025] Working process: During the steel rolling process, when this device is used to perform dust removal operation on the guide guard, the high-temperature steel is transported from left to right. The high-temperature steel is first transported into the first guide guard. The first guide guard guides the high-temperature steel into the rolling mill on its right. The first rolling mill rolls the steel. When the first rolling mill completes rolling of the steel, the steel is transported into the second guide guard. The second guide guard guides the high-temperature steel into the second rolling mill. The second rolling mill rolls the steel. When the second rolling mill completes rolling of the steel, the steel is transported into the third guide guard. The third guide guard guides the high-temperature steel into the third rolling mill. After the third rolling mill rolls the steel, this device completes the rolling of one steel. Through the step-by-step operation of the three rolling mills, During rolling, the steel is processed into the initially set specifications. When the high-temperature steel is about to enter the first guide, the control panel starts the vacuum pump 2 and the water pump, and the outside gas enters the fixed pipe 1 through the air guide shell 4 and the branch pipe 3. At this time, the lower ends of all the branch pipes 3 are half-blocked by the sliding plate 5, and the water pump continuously injects water into the water pipe 6. Taking the first guide on the far left as an example, when the high-temperature steel moves out from the exit of the guide, the steel contacts and pushes the swing rod 201 to swing counterclockwise (from front to back). The swing rod 201 pushes the sliding plate 5 to the left with the U-shaped rod as the fulcrum, and the lower end of the branch pipe 3 is completely opened. The flow rate of the gas at the branch pipe 3 is greatly accelerated, and the remaining branch pipes 3 are all in a semi-closed state, and the flow rate of the gas in the remaining branch pipes 3 is reduced.

[0026] When the steel contacts and pushes the swing rod 201 to swing, the steel pushes the sliding rod 202 into the swing rod 201, and the sliding rod 202 compresses the first spring connected to it. As the high-temperature steel passes through the guide, a large amount of dust will be generated at the outlet of the guide. The air guide shell 4 guides the gas into the branch pipe 3, and the airflow brings the dust generated at the outlet of the guide into the fixed pipe 1 through the branch pipe 3. The switching mechanism sprays water mist on the dust brought into the fixed pipe 1 by the branch pipe 3 to cool it down. The water mist gathers into a water flow at the bottom of the fixed pipe 1. The airflow carrying the high-temperature dust is also cooled by the water mist during its movement in the fixed pipe 1, and is finally collected at the vacuum pump 2. The water flow containing dust in the fixed pipe 1 enters Into the water storage pipe, when the steel is completely moved out of the guide, the steel plate contacts the next guide, and there is still a branch pipe 3 that is not blocked. The delay component slowly pushes the sliding plate 5 to reset, and the sliding plate 5 drives the swing rod 201 to swing and reset. The sliding rod 202 extends from the swing rod 201 and resets under the elastic force of the connected first spring. During the resetting of the sliding plate 5, the gas flow rate in the branch pipe 3 gradually becomes the same as the gas flow rate in other branch pipes 3 in the semi-blocked state. The switching mechanism sprays fine water mist on the low-speed airflow brought into the fixed pipe 1 by the branch pipe 3 to remove the room-temperature dust particles in the low-speed airflow, thereby ensuring the cooling effect and distinguishing different dusts.

[0027] After the steel has passed through all the guides, all the branch pipes 3 return to a semi-blocked state. At this time, the air flow speed in all the branch pipes 3 returns to its initial state. The switching mechanism sprays water mist, and the water mist forms a water flow to carry away the dust accumulated at the bottom of the fixed pipe 1. With the continuous transportation of the steel, the three branch pipes 3 repeat the above-mentioned blocking and opening operations in turn until all the steel processing is completed. Finally, the operator turns off the water pump and the vacuum pump 2 through the control panel and cleans the fixed pipe 1. At this point, all parts have returned to their initial positions.

[0028] Please refer to the attached Figure 3 -Attached Figure 5 As shown, the delay component includes: a buffer cylinder 301, which is fixed in the air guide housing 4, and hydraulic oil is filled in the buffer cylinder 301; a sliding straight rod 302, which is slidably connected in the buffer cylinder 301, and the sliding straight rod 302 is fixed to the sliding plate 5. A second spring is fixed between the sliding straight rod 302 and the buffer cylinder 301, and two through holes are arranged on the sliding straight rod 302. The through holes of the sliding straight rod 302 are used to delay its moving speed in the buffer cylinder 301. The two through holes on the sliding straight rod 302 are one large and one small, and a one-way valve is arranged in the large through hole, which is used to make the sliding plate 5 move quickly when the blockage of the branch pipe 3 is released, and move slowly when the blockage of the branch pipe 3 is restored.

[0029] In the above scheme, the purpose is to delay the restoration of the blocking state of branch pipe 3 after the high-temperature steel leaves the guide outlet, so that branch pipe 3 can remain fully open for a period of time, greatly reducing the diffusion effect of dust generated at the guide, and ensuring the stability of the dust removal effect of the device; the one-way valve in the large through hole of the sliding straight rod 302 only allows the hydraulic oil on its left side to flow to the right side.

[0030] Working process: When the high-temperature steel pushes the swing rod 201 to swing counterclockwise (from front to back), the swing rod 201 pushes the sliding plate 5 to slide to the left, and the sliding plate 5 pushes the sliding straight rod 302 to move into the buffer cylinder 301. The sliding straight rod 302 compresses the second spring connected to it, and the hydraulic oil on the left side of the large through hole of the sliding straight rod 302 flows to the right side through the one-way valve and the small through hole. When the swing rod 201 swings to the limit, it remains motionless. When the sliding rod 202 loses contact with the steel, the sliding straight rod 302 is elastic under the elasticity of the second spring connected to it. Under the action of force, the sliding plate 5 is pushed to move to the right and reset. The hydraulic oil on the right side of the sliding straight rod 302 only flows to the left side through the small through hole, so that the sliding plate 5 slowly moves and resets. The branch pipe 3 maintains high-speed air extraction for a period of time to reduce the diffusion range of dust at the guide. When the branch pipe 3 is half-blocked by the sliding plate 5, the low-speed extraction operation will still be performed to prevent excessive negative pressure in the fixed pipe 1 while purifying the air in the workshop. When the sliding straight rod 302 moves and resets, the sliding plate 5 and the swing rod 201 are reset, and all parts are restored to their initial positions.

[0031] Please refer to the attached Figure 6 -Attached Fig. 9 As shown, the switching mechanism includes: a fixed shell 401, which is fixedly connected to the fixed pipe 1, the fixed shell 401 is connected to the water pipe 6, the lower side of the fixed shell 401 is connected to the first nozzle 402 and the second nozzle 403, the first nozzle 402 is directly opposite to the connection between the branch pipe 3 and the fixed pipe 1; a sliding bent plate 404, which is slidably connected to the fixed shell 401, and two through holes are provided on the sliding bent plate 404, and the through holes on the sliding bent plate 404 are used to control the first nozzle 402 and the second nozzle 403. 3; a flow rate detection component, arranged in the fixed pipe 1, for detecting the flow rate of the gas in the branch pipe 3; a control component, arranged in the fixed pipe 1, for controlling the movement of the sliding curved plate 404 according to the flow rate of the gas in the branch pipe 3, the flow rate detection component comprises: a support plate 501, installed in the fixed pipe 1, a rotating fan blade 502 is rotatably connected to the support plate 501, and the rotating fan blade 502 is directly opposite to the connection between the branch pipe 3 and the fixed pipe 1; a rotating disk 503, fixedly connected to the rotating fan The rotating shaft of the leaf 502 is slidably connected to a plurality of sliding blocks 504 distributed in the circumferential direction in the rotating disk 503, and a first tension spring is fixedly connected between the sliding block 504 and the rotating disk 503. The control component includes: a first telescopic rod 601, which is fixedly connected to the fixed tube 1, and the telescopic end of the first telescopic rod 601 is fixedly connected to the sliding bent plate 404; a rotating ring 602, which is rotatably connected to the rotating disk 503, and the rotating ring 602 and the rotating disk 503 form a cavity, and the first telescopic rod 601 is connected to the first telescopic rod 601. A conduit 603, the first conduit 603 is connected to the cavity formed by the rotating ring 602 and the rotating disk 503, and the cavity formed by the first telescopic rod 601, the first conduit 603, the rotating ring 602 and the rotating disk 503 is filled with hydraulic oil; a limit pin 604 is slidably connected to the fixed shell 401, a third spring is fixedly connected between the limit pin 604 and the fixed shell 401, and a blind hole is provided on the sliding bent plate 404, and the limit pin 604 limits the sliding bent plate 404 through the blind hole.

[0032] In the above scheme, it is intended to solve the problem that if one branch pipe 3 is not blocked by the sliding plate 5, after the flow velocity of the gas in the other half-blocked branch pipe 3 is reduced, the water mist sprayed by the first nozzle 402 will enter the branch pipe 3 with a low gas flow velocity, causing dust to be adsorbed on the inner wall when flowing in the branch pipe 3, and the flow path of the gas in the branch pipe 3 will be blocked after a long time of work; the first nozzle 402 is located on the right side of the second nozzle 403, and the water spray port of the first nozzle 402 is directly opposite to the connection between the branch pipe 3 and the fixed pipe 1, and the second nozzle 4 03 is a refined water mist nozzle, and the second nozzle 403 sprays refined water mist, which reduces the moving distance of the water mist and enhances the effect of water mist on removing and cooling dust in the airflow. When the branch pipe 3 is blocked by the sliding plate 5, the corresponding fixed shell 401 is connected to the second nozzle 403 through the through hole of the sliding bent plate 404. The gas flow rate in the branch pipe 3 is detected by rotating the fan blades 502, and the working states of the first nozzle 402 and the second nozzle 403 are switched, so that different types of dust are cooled in a targeted manner, thereby improving the dust removal efficiency of the device.

[0033] Working process: when the steel is moved out from the exit of the guide, taking the leftmost branch pipe 3 as an example, the sliding plate 5 removes the shielding of the branch pipe 3, and the airflow carrying the high-temperature dust enters the fixed pipe 1 through the branch pipe 3. The gas flow rate in the branch pipe 3 is greater than the gas flow rate in the other branch pipes 3. The airflow in the branch pipe 3 drives the rotating blades 502 and the rotating disk 503 to rotate. The four sliding blocks 504 in the rotating disk 503 move away from each other under the action of centrifugal force. The sliding blocks 504 stretch the first tension spring connected to them, and the hydraulic oil in the rotating disk 503 enters the first guide tube 603 through the first guide tube 604. In a telescopic rod 601, the telescopic end of the first telescopic rod 601 extends out and pushes the sliding bent plate 404 to move to the left, and the blind hole of the sliding bent plate 404 pushes the limit pin 604 to move downward, and the limit pin 604 moves downward and compresses the connected third spring, and the limit of the sliding bent plate 404 is released, the fixed shell 401 is connected to the first nozzle 402, the second nozzle 403 is closed, and the water pipe 6 injects water into the fixed shell 401, and the first nozzle 402 sprays water mist on the airflow from the branch pipe 3 entering the fixed pipe 1, so as to cool down the high-temperature dust entering the fixed pipe 1.

[0034] When the steel plate is moved out of the guide, the sliding plate 5 gradually resumes blocking the branch pipe 3, and the blocking of the branch pipe 3 at the next guide is released, thereby increasing the gas flow rate in the branch pipe 3 at the next guide. During the process of gradually restoring the semi-blocking of the branch pipe 3, the gas flow rate in the branch pipe 3 gradually decreases, and the rotation speed of the rotating blade 502 and the rotating disk 503 decreases. The four sliding blocks 504 are all close to each other under the tension of the connected first tension spring, and the hydraulic oil in the first guide tube 603 flows in the opposite direction. The telescopic end of the first telescopic rod 601 contracts and drives the sliding bent plate 404 to move rightward and reset. When the sliding bent plate 4 04 After the blind hole is aligned with the limit pin 604, the limit pin 604 is reinserted into the blind hole of the sliding bent plate 404 under the tension of the connected first tension spring, the first nozzle 402 is closed, and the second nozzle 403 is turned on. The second nozzle 403 sprays out refined water mist. When all branch pipes 3 are half-blocked, the gas flow rate in the branch pipe 3 returns to the initial state. At this time, the gas flow rate in the branch pipe 3 is greater than the gas flow rate in the remaining branch pipes 3 when one branch pipe 3 is not blocked. The first nozzle 402 is turned on, and the above operation is repeated continuously until the rolling of all steel products is completed and all parts are restored to their initial positions.

[0035] Example 2: Based on Example 1, please refer to the attached Figure 2 , Attachment Figure 6 and attached Fig.10 -Attached Fig.12As shown, it also includes: a plurality of cleaning mechanisms, the number of which is the same as the number of branch pipes 3, all of which are arranged in the fixed pipe 1, and are used to flush the dust accumulated in the fixed pipe 1, and the cleaning mechanism includes: a fixed column 701, which is fixedly connected to the fixed pipe 1, and a guide cavity is arranged in the fixed column 701, and the guide cavity of the fixed column 701 is connected to the second conduit 702, and the second conduit 702 is connected to the water pipe 6; a rotating shell 703, which is rotatably and slidably connected to the corresponding fixed column 701, and the rotating shell 703 is connected to the guide cavity of the fixed column 701, and the side wall of the rotating shell 703 is connected to the water curtain nozzle; a fixed bent rod 704, which is fixedly connected to the corresponding rotating disk 503, and the fixed bent rod 704 is used to drive the rotating shell 703 to rotate; a synchronization component, which is arranged in the fixed pipe 1, and is used to control the water curtain nozzles on all rotating shells 703 to rotate and spray water when there is no steel plate in all guides, and the synchronization component includes: a sliding A long plate 801 is slidably connected in the fixed tube 1. The sliding long plates 801 in different synchronous components are fixedly connected to each other. A plurality of sliding pins 802 are slidably connected in the fixed tube 1. A fourth spring is fixedly connected between the sliding pin 802 and the fixed tube 1. The sliding pin 802 is used to hinder the movement of the sliding long plate 801. A plurality of second telescopic rods 803, the number of which is the same as the number of branch pipes 3. The telescopic ends of the second telescopic rods 803 are connected to the sliding long plate 801 through a second tension spring. The second telescopic rod 803 is connected to the adjacent first telescopic rod 601 through a pipeline. The second telescopic rod 803 is filled with hydraulic oil. A plurality of fixed bent plates 804, the number of which is the same as the number of branch pipes 3, are all fixedly connected to the sliding long plate 801. The sliding long plate 801 and the fixed column 701 are limited for rotation. A through hole is provided on the fixed bent plate 804. The through hole on the fixed bent plate 804 is used to control the connection state of the second conduit 702.

[0036] In the above scheme, the cleaning intensity of the auxiliary dust on the inner wall of the fixed pipe 1 is further improved to prevent excessive dust accumulation on the inner wall of the fixed pipe 1 and hinder the smooth flow of gas in the fixed pipe 1; the resistance of the sliding long plate 801 limited by the multiple sliding pins 802 is greater than the maximum tension of the second tension spring at the telescopic end of the single second telescopic rod 803, so that the sliding long plate 801 can only move when all the telescopic ends of the second telescopic rods 803 are retracted, and the through hole on the fixed bent plate 804 is initially misaligned with the second conduit 702, and no water flows in the second conduit 702. The number of sliding pins 802 and the second telescopic rod 803 in the device is set to three. The sliding long plate 801 is limited by the sliding pins 802, so that when no steel plates pass through all the guides, the rotating shell 703 rotates and the water curtain nozzle on it sprays a water curtain, and the fixed pipe 1 is cleaned intensively to avoid excessive dust adhering to the inner wall of the fixed pipe 1, which causes corrosion to the fixed pipe 1, thereby reducing the service life of the fixed pipe 1.

[0037] Working process: when the gas flow rate in the branch pipe 3 is accelerated, the rotation speed of the rotating blade 502 is accelerated, the telescopic end of the first telescopic rod 601 is extended, and part of the hydraulic oil in the first telescopic rod 601 enters the adjacent second telescopic rod 803 through the pipeline, and the telescopic end of the second telescopic rod 803 is contracted, and the second tension spring connected to the telescopic end of the second telescopic rod 803 is stretched. Since the sliding pin 802 limits the sliding long plate 801, the sliding long plate 801 does not move. When all the branch pipes 3 are half-covered by the sliding plate 5, the gas flow rate in the branch pipe 3 returns to the initial state. At this time, the gas flow rate in the branch pipe 3 is greater than the gas flow rate in the remaining branch pipes 3 when one branch pipe 3 is not blocked, and the rotation of all the rotating blades 502 is The movement speed is fast, and the above operation is repeated. The telescopic ends of all the second telescopic rods 803 are retracted at the same time. The tension of the second tension springs connected to the telescopic ends of all the second telescopic rods 803 is greater than the resistance of the sliding long plate 801 limited by all the sliding pins 802. The sliding long plate 801 pushes the sliding pin 802 to move forward. The sliding pin 802 compresses the connected fourth spring. The sliding long plate 801 drives the rotating shell 703 and the fixed bent plate 804 to move forward. The through hole on the fixed bent plate 804 is connected to the second conduit 702. The water in the water pipe 6 is sprayed out by the water curtain nozzle through the second conduit 702, the guide cavity of the fixed column 701 and the rotating shell 703, and the fixed bent rod 704 always rotates with the rotating disk 503.

[0038] When the rotating shell 703 moves forward, the fixed curved rod 704 drives the rotating shell 703 to rotate continuously, and the water curtain sprayed by the water curtain nozzle focuses on flushing the fixed pipe 1 through circumferential rotation to remove the dust attached to the inner wall of the fixed pipe 1. After the steel appears in the guide again, the blocking of the branch pipe 3 at the guide is released, the gas flow rate in the branch pipe 3 increases, and the remaining branch pipes 3 are still not in a semi-blocked state, and the gas flow rate in the remaining branch pipes 3 decreases. The telescopic end of the second telescopic rod 803 pushes the sliding long plate 801 to reset through the tension spring, and the sliding pin 802 moves downward and resets under the elastic force of the connected fourth spring. The second conduit 702 is blocked, the rotating shell 703 loses contact with the fixed curved rod 704, the rotating shell 703 stops rotating and the water curtain nozzle on it stops spraying water, and all parts are restored to their initial positions.

[0039] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the contents of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that technicians in the relevant technical field can understand and use the present invention well. As long as they do not deviate from the structure of the invention or exceed the protection scope of the present invention, they should fall within the protection scope of the present invention.

Claims

1. An online dust removal device for steel rolling guide, characterized in that: include: A fixed pipe (1), wherein an air pump (2) is provided at one end of the fixed pipe (1); A plurality of branch pipes (3) are all connected to the fixed pipe (1); the branch pipes (3) are provided with an air guide housing (4); the air guide housing (4) is located at the outlet of an adjacent guide; a sliding plate (5) is slidably connected inside the air guide housing (4); the sliding plate (5) is used to block part of the branch pipe (3); A water delivery pipe (6) installed on the fixed pipe (1); a plurality of steel plate detection mechanisms, the number of which is the same as the number of the branch pipes (3), which are respectively arranged on the corresponding sliding plates (5) and are used to prevent the branch pipes (3) from being blocked by the sliding plates (5) only when a steel plate exists in an adjacent guide; A plurality of switching mechanisms, the number of which is the same as the number of the branch pipes (3), are arranged in the fixed pipe (1) and are used to switch different cooling modes according to the size of the airflow in the branch pipe (3); The steel plate detection mechanism comprises: A swing rod (201) is rotatably connected to the sliding plate (5), a sliding groove is provided on the swing rod (201), a U-shaped rod is provided in the air guide housing (4), and the U-shaped rod slides in the sliding groove of the swing rod (201); A sliding rod (202) is slidably connected to the lower end of the swing rod (201), and a first spring is fixedly connected between the sliding rod (202) and the swing rod (201); A time delay component is arranged on the air guide housing (4) and is used to prolong the time for the sliding plate (5) to move and reset.

2. The on-line dust removal device for steel rolling guide according to claim 1 is characterized in that: First, the inner diameter of the branch pipe (3) adjacent to the guide part in contact with the high-temperature steel plate is larger than the inner diameters of the other branch pipes (3), so as to focus on exhausting and cleaning the guide part where much dust is generated.

3. The on-line dust removal device for rolling steel guide according to claim 1 is characterized in that: The delay component comprises: A buffer cylinder (301) is fixedly connected to the air guide housing (4), and hydraulic oil is filled in the buffer cylinder (301); A sliding straight rod (302) is slidably connected in the buffer cylinder (301); the sliding straight rod (302) is fixedly connected to the sliding plate (5); a second spring is fixedly connected between the sliding straight rod (302) and the buffer cylinder (301); two through holes are provided on the sliding straight rod (302); the through holes of the sliding straight rod (302) are used to slow down the moving speed of the sliding straight rod in the buffer cylinder (301).

4. The on-line dust removal device for rolling steel guide according to claim 3 is characterized in that: The two through holes on the sliding straight rod (302) are one large and one small, and a one-way valve is arranged in the large through hole, which is used to enable the sliding plate (5) to move quickly when the blockage of the branch pipe (3) is released, and to move slowly when the blockage of the branch pipe (3) is restored.

5. The on-line dust removal device for rolling steel guide according to claim 1 is characterized in that: The switching mechanism comprises: A fixed shell (401) is fixedly connected to the fixed pipe (1), the fixed shell (401) is connected to the water pipe (6), the lower side of the fixed shell (401) is connected to a first nozzle (402) and a second nozzle (403), and the first nozzle (402) is directly opposite to the connection point between the branch pipe (3) and the fixed pipe (1); A sliding bent plate (404) slidably connected to the fixed shell (401), the sliding bent plate (404) being provided with two through holes, the through holes on the sliding bent plate (404) being used to control the connection state between the first nozzle (402) and the second nozzle (403); A flow rate detection component, arranged in the fixed pipe (1) and used to detect the flow rate of the gas in the branch pipe (3); A control component is arranged in the fixed pipe (1) and is used to control the movement of the sliding curved plate (404) according to the gas flow rate in the branch pipe (3).

6. The on-line dust removal device for rolling steel guide according to claim 5 is characterized in that: The flow rate detection component comprises: A support plate (501) is installed in the fixed tube (1), and a rotating blade (502) is rotatably connected to the support plate (501), and the rotating blade (502) is directly opposite to the connection point between the branch tube (3) and the fixed tube (1); The rotating disk (503) is fixedly connected to the rotating shaft of the rotating fan blade (502), and a plurality of sliding blocks (504) distributed in the circumferential direction are slidably connected inside the rotating disk (503), and a first tension spring is fixedly connected between the sliding blocks (504) and the rotating disk (503).

7. The on-line dust removal device for rolling steel guide according to claim 6 is characterized in that: The control component comprises: A first telescopic rod (601) is fixedly connected inside the fixed tube (1), and a telescopic end of the first telescopic rod (601) is fixedly connected to the sliding curved plate (404); a rotating ring (602) rotatably connected to the rotating disk (503); the rotating ring (602) and the rotating disk (503) form a cavity; the first telescopic rod (601) is connected to a first conduit (603); the first conduit (603) is connected to the cavity formed by the rotating ring (602) and the rotating disk (503); and the cavity formed by the first telescopic rod (601), the first conduit (603), the rotating ring (602) and the rotating disk (503) is filled with hydraulic oil; A limit pin (604) is slidably connected to the fixed shell (401); a third spring is fixedly connected between the limit pin (604) and the fixed shell (401); a blind hole is provided on the sliding bent plate (404); and the limit pin (604) limits the sliding bent plate (404) through the blind hole.

8. The on-line dust removal device for rolling steel guide according to claim 7 is characterized in that: include: A plurality of cleaning mechanisms, the number of which is the same as the number of the branch pipes (3), are arranged in the fixed pipe (1) and are used to flush dust accumulated in the fixed pipe (1). The cleaning mechanisms include: A fixed column (701) is fixedly connected to the fixed pipe (1), a flow guide cavity is provided in the fixed column (701), the flow guide cavity of the fixed column (701) is connected to a second conduit (702), and the second conduit (702) is connected to the water delivery pipe (6); A rotating shell (703) is rotatably and slidably connected to the corresponding fixed column (701), the rotating shell (703) is in communication with the flow guide cavity of the fixed column (701), and the side wall of the rotating shell (703) is in communication with a water curtain nozzle; A fixed curved rod (704) is fixedly connected to the corresponding rotating disk (503), and the fixed curved rod (704) is used to drive the rotating shell (703) to rotate; A synchronization component is arranged in the fixed pipe (1) and is used to control the water curtain nozzles on all the rotating shells (703) to rotate and spray water when there are no steel plates in all the guides.

9. The on-line dust removal device for rolling steel guide according to claim 8 is characterized in that: The synchronization component includes: A sliding long plate (801) is slidably connected in the fixed tube (1), the sliding long plates (801) in different synchronization components are fixedly connected to each other, a plurality of sliding pins (802) are slidably connected in the fixed tube (1), a fourth spring is fixedly connected between the sliding pin (802) and the fixed tube (1), and the sliding pin (802) is used to prevent the sliding long plate (801) from moving; a plurality of second telescopic rods (803), the number of which is the same as the number of the branch pipes (3); the telescopic ends of the second telescopic rods (803) are connected to the sliding long plate (801) via a second tension spring; the second telescopic rods (803) are connected to the adjacent first telescopic rods (601) via a pipeline; and the second telescopic rods (803) are filled with hydraulic oil; A plurality of fixed bent plates (804), the number of which is the same as the number of the branch pipes (3), are all fixedly connected to the sliding long plate (801), the sliding long plate (801) and the fixed column (701) are limitedly rotated, and a through hole is provided on the fixed bent plate (804), and the through hole on the fixed bent plate (804) is used to control the connection state of the second conduit (702).

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