Finishing mill inlet guide slag stopping device and control method thereof

Abstract

The finishing mill inlet guide slag stopping device comprises a steel rolling channel, a receiving hopper is fixedly arranged on the steel rolling channel, a treatment box attached to the side face of the steel rolling channel is arranged at the bottom of one side of the receiving hopper, and a guide hole is formed in the top of the side, close to the receiving hopper, of the treatment box; the bottom of a receiving hopper is obliquely arranged, scale is guided into the treatment box through a guide hole, two rotating plates on one side of a rotating cylinder can be arranged on the two sides of the rotating cylinder respectively, and the number of tensioning assemblies is two, so that the reasonability of up-down movement is improved; in the whole process, materials for neutralization reaction are well saved, the situation that scale affects steel rolling is prevented on the whole, and the purposes of recycling liquid and automatically adding the liquid are achieved through the temperature of production equipment.

Description

Technical Field

[0001] The invention belongs to the technical field of slag blocking at an entrance of a finishing mill, and particularly relates to a guide slag blocking device at an entrance of a finishing mill and a control method thereof. Background Art

[0002] Hot strip rolling is a continuous high-temperature production process. From the tapping temperature of 1200-1250°C, it passes through a series of dephosphorization systems, roughing and finishing mills, and laminar cooling, and the final finished product temperature drops to 550-630°C. The entire production process is mainly affected by controlled rolling and controlled cooling to finally reach the target temperature. The inlet temperature of the hot strip finishing mill is usually 950-1080°C. After continuous rolling in the finishing mill, the final finishing outlet temperature must reach 850-920°C. In this continuous production process, the strip is cooled by turning on the inter-stand cooling water method. The unit equipment is exposed to high temperature conditions for a long time and combines with water vapor, which easily generates a large amount of CaCO2, commonly known as scale, which adheres to the equipment surface. During the rolling process, the scale is affected by the impact force of the strip and the vibration of the rolling mill, and falls off to the upper surface of the strip to form indentation defects. Scale-induced scale defects have a significant impact on the surface quality of the product. Severe indentation causes perforation, resulting in the formation of scrapped strip. The application number is 202111589598.9, and the name of the invention is a slag-blocking device for a finishing mill entrance, including a telescopic unit, wherein the telescopic unit includes a fixed rod, a first hoop, a second hoop, a first telescopic rod, a second telescopic rod, a limiting rod, a spring and a torsion column. The first hoop and the second hoop are coaxially arranged on the fixed rod, one end of the first telescopic rod is connected to the first hoop, and the other end is connected to the limiting rod, one end of the second telescopic rod is connected to the second hoop, and the other end is connected to the limiting rod, the spring is coaxially arranged on the fixed rod and is located between the first hoop and the second hoop, the torsion column is sleeved at one end of the fixed rod, and the equipment above the slag block plate The fallen scale is effectively isolated, which reduces the scale pressure defect. The slag retaining plate itself is made of stainless steel with a smooth surface, which cannot form a large amount of scale, reducing the probability of scale formation. By adding mist nozzle cooling, the deformation of the stainless steel plate under long-term high temperature conditions is avoided, thereby extending the service life. Although this patent solves the problem of scale falling, it is costly to always use vinegar for treatment, and the vinegar cannot be reused once it is neutralized. In addition, the temperature in the working area is high, and the vinegar will evaporate, resulting in a sharp increase in cost. This does not meet actual production needs, and once the evaporated vinegar encounters scale on the surface of the equipment, a layer of substance will form on the surface of the equipment. Summary of the Invention

[0003] The object of the present invention is to provide a finishing mill entrance guide slag blocking device and a control method thereof to solve the above-mentioned problems.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: a slag guide and blocking device at the entrance of a finishing mill, comprising a steel rolling channel, a receiving bucket fixedly provided on the steel rolling channel, a processing box provided at the bottom of one side of the receiving bucket and in contact with the side of the steel rolling channel, a guide hole provided at the top of the processing box on a side close to the receiving bucket, the bottom of the receiving bucket being inclined and guiding scale into the interior of the processing box through the guide hole; A filter plate is fixedly provided on one side of the top of the interior of the treatment box near the guide hole, and the filter plate is used to filter scale. A liquid receiving shell is connected between the bottom of the filter plate and the interior of the treatment box. At least one one-way valve is provided at the bottom of the liquid receiving shell so that the liquid flowing through the filter plate enters the water storage area inside the treatment box through the one-way valve and does not flow back due to the setting of the one-way valve. The bottom end of the processing box is connected to the water storage area with a water pipe, and the water pipe is connected to an adapter through a water pump. One end of the adapter is provided with a nozzle located obliquely above one side of the receiving bucket for spraying a mixture of vinegar and water to increase the adhesion between the scale and the inner wall of the receiving bucket after it falls and to neutralize part of the scale to prevent clogging.

[0005] Preferably, a steam pipe is provided on the rear side of the top of the processing box and extends out of the outside of the processing box, a fan is provided on the outside of the processing box and one end of the steam pipe cuts into the inside of the fan along the rotation direction of the blades in the fan to drive the blades to rotate by wind force, and an automatic monitoring component is provided in the water storage area inside the processing box, and the automatic monitoring component is connected to the rotating shaft of the fan through a transmission.

[0006] Preferably, the automatic monitoring component includes a rotating plate movably connected to the interior of the processing box through a bearing, and a plurality of rotating drums are fixedly connected to the rotating plate in a circular array. A movable shaft is also provided on the side of the rotating plate close to the processing box, and the movable shaft is slidably connected to the inner wall of the processing box up and down. A transmission shaft is movably connected to the interior of the processing box directly above the movable shaft through a sealed bearing, and a synchronous belt 2 is provided between the transmission shaft and the movable shaft, and a tensioning assembly is also provided on the synchronous belt 2 to cooperate with the up and down movement of the movable shaft.

[0007] Preferably, the tensioning assembly includes a blocking plate that is slidably connected to the inner wall of the processing box, a connecting block is fixedly provided on the blocking plate, one side of the connecting block is movably connected to a tensioning wheel through a bearing and the tensioning wheel rotates synchronously with the synchronous belt 2, a telescopic rod is fixedly provided on the side of the connecting block away from the blocking plate, a spring is provided on the outer side of the telescopic rod, and the tensioning wheel is compressed by the up and down movement of the movable shaft until the compression spring is contracted, and the telescopic rod is fixedly connected to the processing box.

[0008] Preferably, the rotating drum includes a plurality of barrel bodies fixed on the rotating plate, and at least three groups of pouring holes are provided on the barrel body, and the center points of two of the three groups of pouring holes form a vertical straight line with the center of the rotating plate when the barrel body is at the highest point, and the other group is arranged at a position perpendicular to the first two groups of pouring holes and facing away from the rotation direction of the rotating plate.

[0009] Preferably, the central axis of the fan extends out of the outside of the fan and rotates synchronously with the drive shaft through a synchronous belt. A liquid adding box is provided on one side of the processing box, and the liquid adding box and the processing box are connected to each other through a liquid adding hole. The liquid adding hole changes the connection area between the processing box and the liquid adding box due to the movement of the blocking plate, and the liquid adding box is connected to a liquid adding barrel.

[0010] Preferably, the rotating shaft of the fan is also synchronously connected to a reciprocating screw through a synchronous belt. The reciprocating screw passes through the interior of the processing box through a sealed bearing and is placed on the top of the filter plate. The outside of the reciprocating screw is connected to a scraper through a bearing seat, and the scraper corners are fitted with the inner wall of the processing box to form a limit, and the bottom is fitted with the filter plate to form a scraping effect.

[0011] Preferably, a scale storage box is provided on the other side of the processing box, and the scale storage box is communicated with the interior of the processing box for receiving the scale pushed out by the scraper.

[0012] Preferably, a guide top plate is fixedly provided at the bottom end of the receiving bucket for guiding and limiting to prevent the shaking scale from jumping out.

[0013] A control method for a slag guard device at an inlet of a finishing mill, comprising the following specific steps: Step 1: Use a collecting bucket to collect scale that falls from the surface of the equipment to prevent it from falling directly onto the rolled steel. Then use a water pump to suck the vinegar-water mixture and spray it onto the inclined surface of the collecting bucket to contact the scale. Step 2: Separate the circulation, the outflowing scale and liquid mixture will flow through the inclined surface to the filter plate and be filtered out by the filter plate. The water pipe set on the treatment box is connected to the adapter through the water pump. One end of the adapter is provided with a nozzle placed obliquely above the side of the receiving bucket for spraying the mixture of vinegar and water to achieve recycling. Step 3: Clean and use steam to drive the fan to rotate. The fan shaft is synchronously connected to a reciprocating screw through a synchronous belt. The reciprocating screw passes through the inside of the processing box through a sealed bearing and is placed on the top of the filter plate. The outside of the reciprocating screw is connected to a scraper through a bearing seat. The scraper corners fit against the inner wall of the processing box to form a limit, and the bottom fits against the filter plate to form a scraping effect. Step 4: Monitoring. Utilizing the multiple pouring holes on the automatic monitoring assembly, when the vinegar-water mixture inside the processing box is sufficiently high, the resistance to the overall upward movement of the automatic monitoring assembly includes the liquid inside the multiple barrel bodies. When the vinegar-water mixture inside the processing box decreases, the pouring holes can be used to completely pour out the liquid inside the barrel body that has rotated out of the liquid surface during the rotation process, thereby reducing the mass of the entire automatic monitoring assembly and thus reducing the resistance to the upward movement of the automatic monitoring assembly. When the liquid level is too low, the overall mass of the automatic monitoring assembly decreases too much, and the elastic force of the spring pushes the tensioning wheel and the blocking plate to move, thereby pulling the rotating drum upward as a whole. Step 5: Automatic liquid replenishment. When the blocking plate is moved, it will be removed from the liquid adding hole, that is, the blockage of the liquid adding hole will be slowly removed to connect the liquid adding box and the processing box to achieve the purpose of automatic liquid adding.

[0014] The technical effects and advantages of the present invention are as follows: by utilizing multiple pouring holes on the automatic monitoring assembly, when the vinegar-water mixture inside the processing box is sufficient, the resistance to the upward movement of the automatic monitoring assembly as a whole includes the liquid inside the multiple barrel bodies. When the vinegar-water mixture inside the processing box decreases, the pouring holes can be used to completely pour out the liquid inside the barrel body that has rotated out of the liquid surface during rotation, reducing the mass of the entire automatic monitoring assembly and thus reducing the resistance to the automatic monitoring assembly's upward movement. When the liquid level is too low, the overall mass of the automatic monitoring assembly decreases too much, and the elastic force of the spring pushes the tensioning wheel and the blocking plate to move, thereby pulling the entire rotating drum upward. When the blocking plate is moved, it is removed from the liquid addition hole, gradually removing the blockage of the liquid addition hole, connecting the liquid addition box and the processing box, thereby achieving the purpose of automatic liquid addition. During this process, two rotating plates can be provided on one side of the rotating drum, one on each side of the rotating drum, and two tensioning assemblies can be provided to increase the rationality of upward and downward movement. The entire process effectively saves materials for the neutralization reaction and effectively prevents scale from affecting steel rolling. The temperature of this production equipment is utilized to achieve the purpose of liquid recycling and automatic addition. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 is a side view of the present invention; Figure 3 This is a schematic diagram of the water pipe connection of the present invention; Figure 4 This is a schematic diagram of the internal structure of the processing box of the present invention; Figure 5 For the present invention Figure 4 A partial enlarged view of the middle part; Figure 6 It is a schematic diagram of the three-dimensional structure of the automatic monitoring component of the present invention; Figure 7 It is a side view of the automatic monitoring component of the present invention.

[0016] In the figure: 1. Steel rolling channel; 2. Processing box; 3. Inclined surface; 4. Guide top plate; 5. Scale storage box; 6. Automatic monitoring component; 601. Drive shaft; 602. Spring; 603. Telescopic rod; 604. Synchronous belt 2; 605. Tensioner; 606. Blocking plate; 607. Connecting block; 608. Rotating drum; 6081. Barrel body; 6082. Dumping hole; 609. Rotating plate; 7. Receiving bucket; 8. Water pipe; 9. Water pump; 10. Adapter; 11. Liquid receiving shell; 12. Filter plate; 13. Nozzle; 14. Liquid adding box; 15. Liquid adding hole; 16. Steam pipe; 17. Moving shaft; 18. Synchronous belt 1; 19. Fan; 20. Reciprocating screw; 21. One-way valve; 22. Scraper; 23. Guide hole; 24. Mounting groove. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] The present invention provides Figures 1 to 7 The slag guide and blocking device for the entrance of a finishing mill shown in the figure comprises a steel rolling channel 1, a receiving bucket 7 is fixedly provided on the steel rolling channel 1, a processing box 2 is provided at the bottom of one side of the receiving bucket 7 and is in contact with the side of the steel rolling channel 1, a guide hole 23 is provided on the top of the processing box 2 on the side close to the receiving bucket 7, the bottom of the receiving bucket 7 is inclined and scale is guided into the interior of the processing box 2 through the guide hole 23; A filter plate 12 is fixedly provided on one side of the top of the interior of the treatment box 2 near the guide hole 23, and the filter plate 12 is used to filter scale. A liquid receiving shell 11 is connected between the bottom of the filter plate 12 and the interior of the treatment box 2. At least one one-way valve 21 is provided at the bottom of the liquid receiving shell 11 so that the liquid flowing through the filter plate 12 enters the water storage area inside the treatment box 2 through the one-way valve 21 and does not flow back due to the setting of the one-way valve 21. The bottom end of the processing box 2 is connected to the water storage area with a water pipe 8, and the water pipe 8 is connected to the adapter 10 through a water pump 9. One end of the adapter 10 is provided with a nozzle 13 placed obliquely above the side of the receiving bucket 7 for spraying a mixture of vinegar and water to increase the adhesion between the scale and the inner wall of the receiving bucket 7 after it falls and to neutralize part of the scale to prevent clogging.

[0019] Specifically, a steam pipe 16 is provided on the rear side of the top of the processing box 2 and the steam pipe 16 extends out of the outside of the processing box 2. A fan 19 is provided on the outside of the processing box 2 and one end of the steam pipe 16 cuts into the inside of the fan 19 along the rotation direction of the blades in the fan 19 to use wind force to drive the blades to rotate. An automatic monitoring component 6 is provided in the water storage area inside the processing box 2, and the automatic monitoring component 6 is connected to the rotating shaft of the fan 19 through a transmission.

[0020] Specifically, the automatic monitoring component 6 includes a rotating plate 609 that is movably connected to the interior of the processing box 2 through a bearing, and a plurality of rotating drums 608 are fixedly connected to the rotating plate 609 in a circular array. A movable shaft 17 is also provided on the side of the rotating plate 609 close to the processing box 2, and the movable shaft 17 is slidably connected to the inner wall of the processing box 2 up and down. A transmission shaft 601 is movably connected to the interior of the processing box 2 directly above the movable shaft 17 through a sealed bearing, and a synchronous belt 2 604 is provided between the transmission shaft 601 and the movable shaft 17, and a tensioning assembly is also provided on the synchronous belt 2 604 to cooperate with the up and down movement of the movable shaft 17.

[0021] Specifically, the tensioning assembly includes a blocking plate 606 that is slidably connected to the inner wall of the processing box 2, and a connecting block 607 is fixedly provided on the blocking plate 606. A tensioning wheel 605 is movably connected to one side of the connecting block 607 through a bearing, and the tensioning wheel 605 rotates synchronously with the synchronous belt 2 604. A telescopic rod 603 is fixedly provided on the side of the connecting block 607 away from the blocking plate 606. A spring 602 is provided on the outside of the telescopic rod 603, which uses the up and down movement of the movable shaft 17 to pull and compress the tensioning wheel 605 until the compression spring 602 contracts. The telescopic rod 603 is fixedly connected to the processing box 2.

[0022] Specifically, the rotating drum 608 includes a plurality of barrel bodies 6081 fixed on the rotating plate 609, and at least three groups of pouring holes 6082 are provided on the barrel body 6081. The center points of two of the three groups of pouring holes 6082 form a vertical straight line with the center of the rotating plate 609 when the barrel body 6081 is at the highest point of the group, and the other group is arranged at a position perpendicular to the first two groups of pouring holes 6082 and facing away from the rotation direction of the rotating plate 609.

[0023] Specifically, the central axis of the fan 19 extends out of the outside of the fan 19 and rotates synchronously with the drive shaft 601 through a synchronous belt 18. A liquid adding box 14 is provided on one side of the processing box 2, and the liquid adding box 14 and the processing box 2 are connected to each other through a liquid adding hole 15. The liquid adding hole 15 changes the connection area between the processing box 2 and the liquid adding box 14 due to the movement of the blocking plate 606, and the liquid adding box 14 is connected to a liquid adding barrel.

[0024] Working principle: Example 1: The scale falling from the surface of the equipment is collected by the receiving bucket 7 to prevent the scale from falling directly on the rolled steel. Then, the vinegar-water mixture is sucked by the water pump 9 and sprayed onto the inclined surface of the receiving bucket 7 to contact the scale. First, the scale is prevented from being shaken out by the shaking of the equipment and the liquid is used to increase the adhesion between the scale and the inner wall of the receiving bucket 7 after it falls. Second, the flow of the liquid can quickly drive the scale to flow out to prevent accumulation. The outflowing scale and the mixture of liquid will flow through the inclined surface 3 to the filter plate 12 and be filtered out by the filter plate 12, which can achieve the removal of scale and avoid relying entirely on vinegar to remove scale. The waste caused by neutralization is eliminated, and the one-way valve 21 is used to guide the vinegar-water mixture to the automatic monitoring component 6. Since the processing box 2 is tightly fitted with the steel rolling channel 1, and the temperature of the steel rolling moving inside the steel rolling channel 1 is above 500 degrees for a long time, water vapor will be generated inside. The steam pipe 16 is used to guide the water vapor to drive the rotating shaft of the fan 19 to rotate, and the synchronous belt 18 and the moving shaft 17 are used to rotate the automatic monitoring component 6. The multiple pouring holes 6082 opened on the automatic monitoring component 6 can be used to automatically monitor the entire component 6 when the vinegar-water mixture inside the processing box 2 is sufficient. The resistance to movement is composed of the liquid inside the barrel body 6081. When the vinegar-water mixture inside the processing box 2 is reduced, the liquid inside the barrel body 6081 that has rotated out of the liquid surface can be completely poured out by the setting of the pouring hole 6082 during the rotation process, thereby reducing the mass of the entire automatic monitoring component 6 and thus reducing the resistance to the upward movement of the automatic monitoring component 6. When the liquid level is too low, the overall mass of the automatic monitoring component 6 is reduced too much, and the elastic force of the spring 602 will push the tensioning wheel 605 and the blocking plate 606 to move, thereby pulling the rotating drum 608 upward as a whole, and when moving the blocking plate 606, At that time, the blocking plate 606 will be withdrawn from the liquid adding hole 15, that is, the blocking connection of the liquid adding hole 15 will be slowly removed, and the purpose of automatic liquid adding is formed between the liquid adding box 14 and the processing box 2. During this period, two rotating plates 609 on one side of the rotating drum 608 can be provided, which are respectively placed on both sides of the rotating drum 608, and the tensioning components are also provided with two to increase the rationality of the up and down movement. The whole process has achieved a good saving of the material for the neutralization reaction and has also played a good role in preventing the scale from affecting the steel rolling. In addition, the temperature of this production equipment is used to realize the purpose of recycling the liquid and automatically adding the liquid. Embodiment 2: Specifically, the rotating shaft of the fan 19 is also synchronously connected to the reciprocating screw 20 through the synchronous belt three. The reciprocating screw 20 passes through the interior of the processing box 2 through a sealed bearing and is placed on the top of the filter plate 12. The outer side of the reciprocating screw 20 is connected to a scraper 22 through a bearing seat, and the corners of the scraper 22 are fitted with the inner wall of the processing box 2 to form a limit, and the bottom is fitted with the bottom of the filter plate 12 to form a scraping effect.

[0025] Specifically, a scale storage box 5 is provided on the other side of the processing box 2 . The scale storage box 5 is communicated with the interior of the processing box 2 and is used to receive the scale pushed out by the scraper 22 .

[0026] Specifically, a guide top plate 4 is fixedly provided at the bottom end of the receiving bucket 7 for guiding and limiting to prevent the shaking scale from jumping out.

[0027] The rotation of the fan 19 shaft drives the reciprocating screw 20 to rotate, thereby driving the scraper 22 to reciprocate on the filter plate 12, thereby continuously cleaning the scale filtered on the filter plate 12 until it is pushed to the scale storage box 5 for storage and further treatment of the scale, which greatly saves the cost of neutralization reaction to treat the scale and increases the utilization efficiency.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A slag-blocking device for a finishing mill entrance, comprising a steel rolling channel (1), wherein a receiving bucket (7) is fixedly provided on the steel rolling channel (1), and characterized in that: A processing box (2) is provided at the bottom of one side of the receiving bucket (7) and is fitted with the side of the steel rolling channel (1). A guide hole (23) is provided at the top of the processing box (2) on the side close to the receiving bucket (7). The bottom of the receiving bucket (7) is inclined and scale is introduced into the interior of the processing box (2) through the guide hole (23). A filter plate (12) is fixedly provided on one side of the top of the interior of the treatment box (2) near the guide hole (23), and the filter plate (12) is used to filter scale. A liquid receiving shell (11) is connected between the bottom of the filter plate (12) and the interior of the treatment box (2). At least one one-way valve (21) is provided at the bottom of the liquid receiving shell (11), so that the liquid flowing through the filter plate (12) enters the water storage area inside the treatment box (2) through the one-way valve (21) and does not flow back due to the setting of the one-way valve (21); The bottom end of the processing box (2) is connected to the water storage area and is connected to a water pipe (8). The water pipe (8) is connected to an adapter (10) through a water pump (9). One end of the adapter (10) is provided with a nozzle (13) which is located obliquely above one side of the receiving bucket (7) and is used to spray a mixture of vinegar and water to improve the adhesion between the scale and the inner wall of the receiving bucket (7) after it falls off and to neutralize a part of the scale to prevent clogging.

2. The slag blocking device for the finishing mill entrance according to claim 1, characterized in that: A steam pipe (16) is provided on the rear side of the top of the processing box (2), and the steam pipe (16) extends outside the processing box (2). A fan (19) is provided outside the processing box (2), and one end of the steam pipe (16) cuts into the inside of the fan (19) along the rotation direction of the blades in the fan (19), using wind force to drive the blades to rotate. An automatic monitoring component (6) is provided in the water storage area inside the processing box (2), and the automatic monitoring component (6) is connected to the rotating shaft of the fan (19) by transmission.

3. The slag blocking device for the finishing mill entrance according to claim 2, characterized in that: The automatic monitoring component (6) includes a rotating plate (609) movably connected to the inside of the processing box (2) through a bearing, and a plurality of rotating drums (608) are fixedly connected to the rotating plate (609) in a circular array. A moving shaft (17) is also provided on the side of the rotating plate (609) close to the processing box (2), and the moving shaft (17) is slidably connected to the inner wall of the processing box (2) in an up-and-down manner. A transmission shaft (601) is movably connected to the inside of the processing box (2) directly above the moving shaft (17) through a sealed bearing, and a synchronous belt (604) is provided between the transmission shaft (601) and the moving shaft (17), and a tensioning component is also provided on the synchronous belt (604) to cooperate with the up-and-down movement of the moving shaft (17).

4. The slag blocking device for the finishing mill entrance according to claim 3, characterized in that: The tensioning assembly includes a blocking plate (606) slidably connected to the inner wall of the processing box (2), a connecting block (607) is fixedly provided on the blocking plate (606), a tensioning wheel (605) is movably connected to one side of the connecting block (607) through a bearing, and the tensioning wheel (605) rotates synchronously with the second synchronous belt (604), a telescopic rod (603) is fixedly provided on the side of the connecting block (607) away from the blocking plate (606), a spring (602) is sleeved on the outer side of the telescopic rod (603), and the tensioning wheel (605) is pulled and compressed by the up and down movement of the movable shaft (17) until the compression spring (602) contracts, and the telescopic rod (603) is fixedly connected to the processing box (2).

5. The slag blocking device for the finishing mill entrance according to claim 4, characterized in that: The rotating drum (608) includes a plurality of barrel bodies (6081) fixed on a rotating plate (609), and at least three groups of pouring holes (6082) are provided on the barrel body (6081). The center points of two of the three groups of pouring holes (6082) form a vertical straight line with the center point of the rotating plate (609) when the barrel body (6081) is at its highest point, and the other group is arranged at a position perpendicular to the first two groups of pouring holes (6082) and facing away from the rotation direction of the rotating plate (609).

6. The slag blocking device for the finishing mill entrance according to claim 5, characterized in that: The central axis of the fan (19) extends out of the outside of the fan (19) and rotates synchronously with the transmission shaft (601) through a synchronous belt (18). A liquid adding box (14) is provided on one side of the processing box (2), and the liquid adding box (14) and the processing box (2) are connected to each other through a liquid adding hole (15). The liquid adding hole (15) is changed by the movement of the blocking plate (606) to change the connection area between the processing box (2) and the liquid adding box (14). The liquid adding box (14) is externally connected to a liquid adding barrel.

7. The slag blocking device for the finishing mill entrance according to claim 6, characterized in that: The rotating shaft of the fan (19) is also synchronously connected to a reciprocating screw (20) through a synchronous belt. The reciprocating screw (20) passes through the interior of the processing box (2) through a sealed bearing and is placed on the top of the filter plate (12). The outer side of the reciprocating screw (20) is connected to a scraper (22) through a bearing seat, and the edges and corners of the scraper (22) are in contact with the inner wall of the processing box (2) to form a limit, and the bottom is in contact with the filter plate (12) to form a scraping effect.

8. The slag blocking device for the finishing mill entrance according to claim 7, characterized in that: A scale storage box (5) is provided on the other side of the processing box (2); the scale storage box (5) is connected to the interior of the processing box (2) and is used to receive scale pushed out by the scraper (22).

9. The slag blocking device for the finishing mill entrance according to claim 1, characterized in that: A guide top plate (4) is also fixedly provided at the bottom of the receiving bucket (7) for guiding and limiting to prevent the shaking scale from jumping out.

10. A control method for a finishing mill entrance guide and slag blocking device, applicable to the finishing mill entrance guide and slag blocking device according to claim 7, characterized in that: The specific steps are as follows: Step 1: Receive and use the receiving bucket (7) to receive the scale that falls from the surface of the equipment to prevent the scale from falling directly on the rolled steel, and then use the water pump (9) to suck the vinegar-water mixture and spray it onto the inclined surface of the receiving bucket (7) to contact the scale; Step 2: Separate the circulation, the outflowing scale and liquid mixture will flow through the inclined surface (3) to the filter plate (12) and be filtered by the filter plate (12), and the water pipe (8) provided on the processing box (2) is connected to the adapter (10) through the water pump (9), and one end of the adapter (10) is provided with a nozzle (13) placed on the upper side of the receiving bucket (7) for spraying the mixture of vinegar and water to achieve recycling; Step 3: Cleaning, using steam to drive the fan (19) to rotate, the rotating shaft of the fan (19) is synchronously connected to the reciprocating screw (20) through the synchronous belt, the reciprocating screw (20) passes through the inside of the processing box (2) through the sealed bearing and is placed on the top of the filter plate (12), the outer side of the reciprocating screw (20) is connected to the scraper (22) through the bearing seat, and the edges and corners of the scraper (22) are in contact with the inner wall of the processing box (2) to form a limit, and the bottom is in contact with the filter plate (12) to form a scraping effect; Step 4: Monitoring and utilizing the plurality of pouring holes (6082) provided on the automatic monitoring component (6) can be used to monitor the resistance to the overall upward movement of the automatic monitoring component (6) when the vinegar-water mixture inside the processing box (2) is sufficient. The resistance includes the liquid inside the plurality of barrel bodies (6081). When the vinegar-water mixture inside the processing box (2) decreases, the pouring holes (6082) can be used to completely pour out the liquid inside the barrel body (6081) that has rotated out of the liquid surface during the rotation process, thereby reducing the mass of the entire automatic monitoring component (6) and thus reducing the resistance to the upward movement of the automatic monitoring component (6). When the liquid level is too low, the overall mass of the automatic monitoring component (6) is reduced too much, and the elastic force of the spring (602) will push the tension wheel (605) and the blocking plate (606) to move, thereby pulling the rotating drum (608) to move upward as a whole. Step 5: Automatic liquid replenishment. When the blocking plate (606) is moved, the blocking plate (606) is removed from the liquid adding hole (15), that is, the blockage of the liquid adding hole (15) is slowly removed to connect the liquid adding box (14) and the processing box (2) to achieve the purpose of automatic liquid replenishment.

Images