Rolling area movable cover door device and rolling area inlet end movable sealing device

Abstract

The utility model provides a rolling area movable cover door device and a rolling area inlet end movable sealing device.The rolling area is covered with a rolling machine cover, the movable cover door device comprises a movable cover door and a door pushing device, and the movable cover door is arranged at an inlet of the rolling machine cover and rotationally connected with an upper sill above the movable cover door; and the door pushing device is arranged on a tipping machine cross beam at the front part of the slag ladle tipping machine. Efficient sealing can be achieved, smoke overflow is reduced, additional operation of operators is avoided due to automatic opening and closing of the blocking door, and firmness and durability are achieved.

Description

Technical Field

[0001] This application relates to the field of solid waste treatment, specifically to a movable gate device for a roller pressing zone and a movable sealing device at the inlet end of the roller pressing zone. Background Technology

[0002] Currently, the main methods for treating steel slag include hot pouring, hot quenching, water quenching, air quenching, roller pressing, and granulation. Among these, hot quenching is increasingly widely used because it can fully dissolve the free calcium oxide and magnesium oxide in the steel slag, eliminating the instability factors of the steel slag. This method is the most effective way to balance the comprehensive utilization, high added value utilization, energy conservation, and environmental protection of steel slag. One aspect of the hot quenching process is the crushing of the steel slag before hot quenching to ensure a thorough dissolution reaction during the process. The crushing process utilizes a slag pot tilter and a roller press. The slag pot tilter pours the molten steel slag through the slag pot into the roller pressing zone, where the roller press crushes the steel slag. Cooling water cools the molten steel slag.

[0003] However, the existing roller pressing area encloses all the equipment inside the hood, and one side cannot be effectively closed, causing smoke and dust to spill out; furthermore, the enclosed hood is too large, so the dust removal air volume is correspondingly increased, and the subsequent dust removal facilities and water treatment facilities are configured too high, which greatly increases the project cost and operating expenses.

[0004] Furthermore, traditional roller pressing equipment requires sealing the outlet of the sealed hood after the tilting machine exits the roller pressing zone to prevent flue gas from escaping. Previously, opening and closing the sealing door required on-site operators to operate an additional jog button, which was inconvenient for them. Moreover, the sealing door was easily damaged by the tilting machine or burned by the high-temperature molten steel slag on the tilting machine, causing many difficulties for on-site operation and maintenance. Utility Model Content

[0005] To at least partially solve the above problems, this application provides a movable cover device for the roller pressing area and a movable sealing device for the inlet end of the roller pressing area, which can achieve efficient sealing and reduce the leakage of smoke and dust. The automatic opening and closing of the sealing door avoids extra operation by the operator and is sturdy and durable.

[0006] The first aspect of this application provides a movable cover device for a roller pressing area, wherein the roller pressing area is covered with a roller press cover, and the movable cover device includes a movable cover and a push door device. The movable cover is disposed at the entrance of the roller press cover and rotatably connected to the upper sill above it; the push door device is disposed on the tilting machine crossbeam at the front of the slag pot tilting machine.

[0007] In an optional embodiment, the inlet end of the roller press cover is provided with an upper sill, which is fixedly connected to the top and sides of the inlet end of the roller press cover, and the movable cover door is rotatably connected to the bottom of the upper sill via hinges.

[0008] In an optional embodiment, the movable door includes a door lifting component disposed on its outer side, the door lifting component being a wedge-shaped component that is narrower at the top and wider at the bottom; the door pushing device is a plate or column fixed and erected on the tilting machine crossbeam, the door pushing device advancing or retracting along the wedge of the door lifting component.

[0009] In an optional embodiment, a physical limiting door suction is provided between the movable cover and the inlet end of the roller press cover. The physical limiting door suction is used to fix the inner wall of the movable cover in the vertical direction when the movable cover falls and closes.

[0010] In an optional embodiment, a first pole of a physical limiting door suction is provided on both sides of the movable cover, and a second pole of a physical limiting door suction is provided on the inner side of the inlet end of the roller press cover. When the first pole and the second pole attract each other, the movable cover is in a vertical state and closes the inlet end of the roller press cover.

[0011] In an optional embodiment, slag baffles are provided on both sides of the slag pot tilting machine, the distance between the outer walls of the two slag baffles is smaller than the distance between the inner walls of the roller press cover, and a high-temperature resistant soft seal is provided between the slag baffles and the roller press cover.

[0012] In an optional embodiment, a slag pot is provided on the slag pot tilter, which is used to pour the molten steel slag in the slag pot into the rolling zone.

[0013] In an optional embodiment, two openings are provided at the inlet ends of the two side walls of the roller press cover so that the tilting machine beam on the slag pot tilting machine does not interfere with the roller press cover when the machine is moving.

[0014] In an optional embodiment, the two openings are sealed with a high-temperature resistant soft sealing material.

[0015] The second aspect of this application also provides a movable sealing device at the entrance end of the roller pressing zone, including the movable gate device of the roller pressing zone.

[0016] This application provides a movable cover device for a roller pressing area. The roller pressing area is covered with a roller press cover. The movable cover device includes a movable cover and a push-door device. The movable cover is located at the entrance of the roller press cover and is rotatably connected to the upper sill above it. The push-door device is located on the tilting machine crossbeam at the front of the slag pot tilting machine. Because the slag pot tilting machine in this application only enters the roller press cover to unload material during the roller pressing interval, dust accumulation on the slag pot tilting machine is avoided. Simultaneously, the inlet end is effectively closed during the roller pressing process, preventing smoke and dust from overflowing. Since it is not necessary to completely cover the slag pot tilting machine and conveying track, the volume of the sealed cover is reduced, thus reducing the dust removal air volume. This lowers the requirements for subsequent dust removal and water treatment facilities, greatly saving project costs and operating expenses. The movable cover door is automatically raised or lowered by the door pushing device. Opening and closing does not require on-site operators to operate the jog button. Moreover, due to the door lifting component, it is not only easy to push the door automatically, but also avoids the door pushing device from directly contacting the movable cover door body, thus preventing the door body from being damaged by the slag pot tilter or burned by the high-temperature molten steel slag on the slag pot tilter, which brings a lot of convenience to on-site operation and maintenance. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the combined enclosed solid material roller pressing system of this application.

[0019] Figure 2 This is an enlarged schematic diagram of the movable cover door and the push door device.

[0020] Figure 3 This is a front view of the movable door.

[0021] Figure 4 This is an enlarged schematic diagram of position 1 of the translation cover.

[0022] Figure 5 This is a side view of position 1 of the translation cover.

[0023] Explanation of markings in the diagram:

[0024] A-Rear end fixed cover, A1-Air duct, A2-Reducing diameter section, A3-Cover body, A4-Notch, A5-Railway, A6-Wheel stop, A8-Railway;

[0025] B-Roller press, B1-Cooling device, B2-Slot 2, B3-Movable cover, B4-Hinge, B5-Roller body, B6-Roller press cover, B7-Roller press crossbeam, B8-Physical limit door catch, B9-Door body lifting component, B10-Card seat 2;

[0026] C-Slag pot tilter, C1-Baffle, C2-Tilter beam, C3-Push door device;

[0027] D-Slag Pot;

[0028] E-roller bed;

[0029] F - Discharge port;

[0030] G-Conveying System;

[0031] H-Transfer cover, H1-Transfer cover body, H2-Wheel pair, H3-Card holder three, H4-Blocking. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] In related technologies, the sealed hood in the roller pressing zone encloses all equipment, but one side cannot be effectively closed, leading to smoke and dust leakage. Furthermore, the hood's excessive size necessitates a correspondingly large dust collection airflow, requiring overly sophisticated dust removal and water treatment facilities, significantly increasing project costs and operating expenses. Additionally, traditional roller pressing devices require sealing the hood outlet after the tilting machine exits the roller pressing zone to prevent smoke leakage. Previously, opening and closing the sealing door required on-site operators to manually operate a jog button, causing inconvenience. Moreover, the sealing door was easily damaged by the tilting machine or burned by the high-temperature molten steel slag on the machine, creating numerous difficulties for on-site maintenance.

[0034] Therefore, in a first aspect, this application provides a movable cover device for the roller pressing area, see [link to relevant documentation]. Figure 1 The roller pressing area is equipped with a roller press cover B6. The movable cover device includes a movable cover B3 and a push door device C3. The movable cover B3 is located at the entrance of the roller press cover B6 and is rotatably connected to the upper sill above it. The push door device C3 is located on the tilting machine beam C2 at the front of the slag pot tilting machine C.

[0035] In one embodiment of this application, the inlet end of the roller press cover B6 is provided with an upper sill, which is fixedly connected to the top and both sides of the inlet end of the roller press cover B6, and the movable cover door B3 is rotatably connected to the bottom of the upper sill via a hinge B4.

[0036] In one embodiment of this application, the movable door B3 includes a door lifting component B9 disposed on its outer side, the door lifting component B9 being a wedge-shaped component that is narrower at the top and wider at the bottom; the door pushing device C3 is a plate or column fixed and erected on the tilting machine beam C2, the door pushing device C3 advancing or retracting along the wedge of the door lifting component B9.

[0037] In one embodiment of this application, a physical limiting door suction B8 is provided between the movable cover B3 and the inlet end of the roller press cover B6. The physical limiting door suction B8 is used to fix the inner wall of the movable cover B3 in the vertical direction when the movable cover B3 falls and closes.

[0038] In one embodiment of this application, the movable cover B3 is provided with a first pole of a physical limiting door suction B8 on both sides, and the roller press cover B6 is provided with a second pole of a physical limiting door suction B8 on the inner side of the inlet end. When the first pole and the second pole attract each other, the movable cover B3 is in a vertical state and closes the inlet end of the roller press cover B6.

[0039] In one embodiment of this application, slag baffles C1 are provided on both sides of the slag pot tilting machine C. The distance between the outer walls of the two slag baffles C1 is smaller than the distance between the inner walls of the roller press cover B6, and a high-temperature resistant soft seal is provided between the slag baffles C1 and the roller press cover B6.

[0040] In one embodiment of this application, a slag pot D is provided on the slag pot tilting machine C, and the slag pot tilting machine C is used to pour the molten steel slag in the slag pot D into the rolling zone.

[0041] In one embodiment of this application, two openings B2 are provided at the inlet ends of the two side walls of the roller press cover B6 so that the tilting machine beam C2 on the slag pot tilting machine C does not interfere with the roller press cover B6 when the machine is moving.

[0042] In one embodiment of this application, a high-temperature resistant soft sealing material is installed to seal the notch B2.

[0043] The second aspect of this application also provides a movable sealing device at the entrance end of the roller pressing zone, including the movable gate device of the roller pressing zone.

[0044] As the slag pot tilter C moves along the track into the roller bed, the push-door device C3 on the tilter beam C2 pushes the movable door B3 from the vertical direction to the top. When the slag pot tilter C is pouring the molten steel slag in the slag pot D, the movable door B3 is in the upper position. After the slag pot tilter C exits the roller pressing area, the movable door B3 returns to the vertical state.

[0045] The process of roller pressing using the movable gate device provided in one embodiment of this application is as follows: The slag pot tilter C carries the slag pot D into the roller pressing area, and the side baffles C1 and the cover A3 simultaneously form a blockage. The slag pot tilter C and the slag pot D themselves also form a blockage effect on the roller press cover B6 in the lateral direction. When the push door device C3 is a plate, it further plays a blocking role in the lateral direction. During the process of the slag pot tilter C moving along the track direction into the roller bed E, the push door device C3 on the tilter beam C2 pushes the movable gate B3 from the vertical direction around the hinge B4 to the top, and the slag pot tilter C pours the molten steel slag in the slag pot D onto the roller bed E. At this time, the movable gate B3 is in the upper position.

[0046] After the slag tilter C exits the roller pressing area, the movable door B3 slowly descends along the push door device C3 via the door lifting component B9, and is physically positioned and attracted by the physical limiting door suction B8, returning to a vertical state. The physical limiting door suction B8 on the outer frame of the movable door B3 prevents the movable door B3 from opening outwards. When the tilter C enters the roller pressing area, the movable door B3 automatically opens and rises, without affecting the slag dumping operation of the tilter C; and when the tilter C finishes dumping the slag and leaves the roller pressing area, the door automatically falls, forming a sealed space, and then roller pressing is performed, sealing the dust generated during the roller pressing process within the sealed space to prevent smoke and dust from overflowing.

[0047] After the movable hood B3 descends to close the roller press hood B6, the roller press B reciprocates within the roller bed E to crush the molten steel slag. After crushing, the slag is pushed to the roller bed discharge port F. Below the discharge port F, there is a storage device G for material storage and transportation. During the roller crushing process, the cooling device B1 sprays water to cool the molten steel slag. The generated flue gas is captured by a combined closed system consisting of the roller press hood B6, the movable hood B3, and the roller bed E, and is then drawn into the subsequent dust removal system.

[0048] In the above process, the slag pot tilting machine C can enter and exit the roller press hood B6 according to a set time interval and duration. Under set conditions (e.g., roller press B is stopped, the flue gas concentration is below a first threshold, and the temperature is below a second threshold), it enters the roller press hood B6, automatically unloads the material (the unloading is completed after a set time), and exits the roller press hood B6. This process can be set by a PLC controller to achieve automated roller pressing. The flue gas concentration and temperature can be measured by sensors, and the duration and frequency can be set by timers. This application focuses on providing a structural composition of a combined closed solid material roller pressing system; therefore, the control process is not described in detail.

[0049] Furthermore, the roller press B has a roller body B5 for roller crushing and a pusher plate (not shown in the figure) for pushing the steel slag, and commercially available equipment can be used.

[0050] The key feature of the above structure is that the slag pot tilter C is set outside the roller press cover B6. It only enters the roller press cover B6 to unload material during the roller pressing process interval, that is, when the roller press B stops. It exits and the roller press cover B6 is sealed before the roller pressing crushing is carried out. This reduces the volume of the roller press cover B6 and also prevents the slag pot tilter C from accumulating ash inside the roller press cover B6.

[0051] The dust removal air volume is reduced accordingly, lowering the requirements for subsequent dust removal and water treatment facilities, thus significantly saving project costs and operating expenses. The movable cover door B3 is automatically raised or lowered by the door pushing device C3, eliminating the need for on-site operators to operate the jog button. Furthermore, the inclusion of the door lifting component B9 facilitates automatic door pushing while preventing the door pushing device C3 from directly contacting the movable cover door body, thus avoiding damage to the door body from the slag pot tilter C or from the high-temperature molten steel slag on the slag pot tilter C, bringing considerable convenience to on-site operation and maintenance.

[0052] The tail end structure of the roller press cover B6 can be of various types. It can be directly set as a regular fixed cover, that is, only the inlet end is equipped with an openable and closing movable cover door device, the other ends are sealed and covered, and an external dust removal device is connected to the top.

[0053] The tail end structure of the roller press cover B6 can also adopt the structure shown in the following embodiment:

[0054] Example 1

[0055] The roller press B is fixed on both sides of the roller press cover B6 to drive the roller press cover B6 to move. The rear end of the roller press cover B6 is fitted with a rear end fixing cover A. The gap between the roller press cover B6 and the rear end fixing cover A is sealed by a sealing device.

[0056] In one embodiment of this application, the upper part of the rear wall of the rear fixed cover A is sequentially connected to a tapered pipe section A2 with a gradually decreasing diameter, and then to an external dust removal device.

[0057] In one embodiment of this application, a cooling device B1 is provided on the roller press B. The cooling device B1 includes a water pipe and a nozzle. The water pipe is installed on the roller press beam B7 of the roller press B, with the outlet end connected to the nozzle and the inlet end connected to an external water pipe.

[0058] Furthermore, the number of water pipes and nozzles can be set to 2 to 4 rows, with 1 to 3 nozzles in each row.

[0059] In one embodiment of this application, a cyclone dust removal structure is provided at the position of the rear fixed cover A near the variable diameter section A2, so that the particles in the dust-laden flue gas return to the roller bed E at the bottom of the roller press B through cyclone dust removal and gravity settling.

[0060] In one embodiment of this application, the roller bed E at the bottom of the roller press B is provided with a discharge port F, and a storage device G is provided below the discharge port F for material storage and transportation.

[0061] In one embodiment of this application, the drive device of the roller press B is isolated outside the combined sealing device and moves synchronously with the roller press B and the roller press cover B6.

[0062] In one embodiment of this application, see Figure 2 The outer shape of the roller press cover B6 is inverted U-shaped, and its two side walls are located on the top plane of the two vertical side plates of the roller bed E in the roller pressing area; the rear fixed cover A includes a cover body A3, which is also inverted U-shaped, with its two side walls located on the top plane of the two vertical side plates of the roller bed E in the roller pressing area; in the cross-sectional direction, the cover body A3 is located inside the roller press cover B6; a notch A4 is provided in the middle of the two side walls of the cover body A3, and the notch A4 is sealed with a high-temperature resistant soft sealing material; the notch A4 is used to prevent interference between the roller press B and the cover body A3.

[0063] In one embodiment of this application, the roller press cover B6 is mounted on the roller press beam B7 of the roller press B and moves synchronously with the movement of the roller press B. The side walls of the roller press cover B6 and the rear end fixing cover A are located on the top plane of the two vertical side plates of the roller bed E in the roller pressing zone, with a small gap between them. This small gap is sealed using a high-temperature soft seal. Exemplarily, the seal is fixed to the bottom of the side walls of the roller press cover B6 and the side walls of the rear end fixing cover A, respectively, and moves and seals the top plane of the two vertical side plates of the roller bed E.

[0064] In one embodiment of this application, the sealing device includes a high-temperature resistant soft sealing material for sealing, specifically, the gap between the cover A3 and the roller press cover B6 is sealed with the high-temperature resistant soft sealing material. The fixed cover A3 and the roller press cover B6 are fitted together in order of size from the inside out, and the gap between the covers is sealed by the high-temperature resistant soft sealing material to achieve a sealing effect. Exemplarily, the seal is fixed to the inner wall of the roller press cover B6, and moves along the outer wall of the fixed cover A3 as the roller press cover B6 moves, sealing the gap.

[0065] In one embodiment of this application, slag baffles C1 are provided on both sides of the slag pot tilting machine C. The distance between the outer walls of the two slag baffles C1 is smaller than the distance between the inner walls of the roller press cover B6, and a high-temperature resistant soft seal is provided between the slag baffles C1 and the roller press cover B6. Exemplarily, this seal is fixed to the outside of the slag baffles C1, and moves along the inner wall of the roller press cover B6 as the slag baffles C1 move, sealing the gap between the slag baffles C1 and the roller press cover B6.

[0066] In this application, the dust is sealed in a closed space by the combined sealing of the roller press cover B6, its inlet end movable cover device, and the rear fixed cover A. The dust-laden flue gas in the closed space is drawn to the external dust removal device for dust removal treatment through the air duct A1. At the same time, the roller pressing area cooling device cools the molten steel slag by spraying water.

[0067] Because the drive unit of the roller press B in this application is isolated from the combined enclosed solid material roller pressing system and moves synchronously with the roller press B and the roller press cover B6, dust accumulation on the drive unit of the roller press B is avoided, which helps protect the equipment and extend its service life. Furthermore, since the slag pot tilter only enters the roller press cover B6 to unload material during the roller pressing interval, dust accumulation on the slag pot tilter is also avoided. At the same time, both ends are effectively closed during the roller pressing process to prevent smoke and dust from overflowing. Since it is not necessary to completely cover the slag pot tilter C and the conveying track, the volume of the enclosed cover is reduced, and the dust removal air volume is correspondingly reduced. The requirements for subsequent dust removal facilities and water treatment facilities are also reduced, which greatly saves project costs and operating expenses.

[0068] The movable cover door B3 is automatically raised or lowered by the door pushing device C3. Opening and closing does not require on-site operators to operate the jog button. Moreover, due to the door lifting component B9, it is not only easy to push the door automatically, but also avoids the door pushing device from directly contacting the movable cover door B3 body. This prevents the door body from being damaged by the slag pot tilter C or burned by the high-temperature molten steel slag on the slag pot tilter C, which brings a lot of convenience to on-site operation and maintenance.

[0069] Example 2

[0070] In this embodiment 2, in order to extend the length of the sealed area of ​​the roller pressing zone, to facilitate the containment and processing of more solid materials, and to allow the roller press B to have more space for roller pressing, a translation cover H can be further provided at the tail of the roller press cover B6.

[0071] In one embodiment of this application, a translational cover H is provided at the connection position between the cover A3 and the roller press cover B6. The cover A3 is in the shape of an inverted U, and its two side walls are located on the top plane of the two vertical side plates of the roller bed E. In the cross-sectional direction, the translational cover H is located outside the cover A3 and inside the roller press cover B6. A track A8 is provided on the top of the cover A3, and a wheel pair H2 is provided at the bottom of the top panel of the translational cover H to drive it to move along the track A8.

[0072] In one embodiment of this application, the two side walls of the cover A3 are located on the top plane of the two vertical side plates of the roller bed E.

[0073] In one embodiment of this application, the gap between the cover A3, the translation cover H, and the roller press cover B6 is sealed with a high-temperature resistant soft sealing material.

[0074] In one embodiment of this application, wheel stops A6 are provided at both the front and rear of the track A8 to physically limit the translation cover H.

[0075] In one embodiment of this application, a clamping bracket 3 H3 and a clamping bracket 2 B10 are provided between the translation cover H and the roller press cover B6, and the translation cover H is given a moving force by the interaction of the clamping bracket 3 H3 and the clamping bracket 2 B10.

[0076] In one embodiment of this application, both the card holder 3 H3 and the card holder 2 B10 are L-shaped and are clamped together. The first horizontal arm of the card holder 3 H3 is fixed to the bottom of the top panel of the translation cover H, and the second vertical arm is disposed on the side away from the translation cover H. The first horizontal arm of the card holder 2 B10 is fixed to the top of the top panel of the roller press cover B6, and the second vertical arm is disposed on the side close to the translation cover H and is in contact with the second vertical arm of the card holder 3 H3.

[0077] The translation cover H is placed on track A8 via wheelset H2. Driving force is applied to the roller press cover B6 by the roller press beam B7 of the roller press B. The interaction of mounting brackets H3 and B10 applies a pushing and pulling force to the translation cover H, thus enabling its unpowered translation. The fixed cover A3, translation cover H1, and roller press cover B6 are fitted together from the inside out, and the gaps between the covers are sealed with high-temperature resistant soft sealing material to achieve a tight seal.

[0078] Specifically, see Figure 1The right side of the translation cover H is connected to the second bracket B10 and the roller press cover B6 via a bracket three H3. The gap between the left side of the translation cover H and the cover body A3 is sealed with a high-temperature resistant soft sealing material. For example, the seal can be fixed on the left side of the translation cover H, and the seal extends towards the cover body A3. When the translation cover H moves, the seal H4 moves on the cover body A3, sealing the gap. The combination of the third bracket H3 and the second bracket B10 serves as a seal, and a seal can be further fixed on the right side of the translation cover H, and this seal extends upwards towards the roller press cover B6, closing the gap between the translation cover H and the roller press cover B6.

[0079] Furthermore, the cooling device can reduce the water volume during water spraying to maximize the utilization of the residual heat from the molten steel slag.

[0080] The translation cover H is a supplement to the sealed length of the roll pressing zone. If there is enough space, the translation cover H can be omitted.

[0081] For high-temperature soft sealing of various gaps in this application, please refer to [reference needed]. Figure 2 Schematic diagram of the sealing structure numbered H4.

[0082] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A movable cover device for a roller pressing zone, wherein the roller pressing zone is covered by a roller press cover (B6), characterized in that, The movable cover device includes a movable cover (B3) and a push-door device (C3). The movable cover (B3) is located at the entrance of the roller press cover (B6) and is rotatably connected to the upper sill above it. The push-door device (C3) is located on the tilting machine beam (C2) at the front of the slag pot tilting machine (C).

2. The movable cover device for the roller pressing zone according to claim 1, characterized in that, The roller press cover (B6) has an upper sill at its inlet end, which is fixedly connected to the top and sides of the inlet end of the roller press cover (B6). The movable cover door (B3) is rotatably connected to the bottom of the upper sill via a hinge (B4).

3. The movable cover device for the roller pressing zone according to claim 1, characterized in that, The movable door (B3) includes a door lifting component (B9) disposed on its outer side, the door lifting component (B9) being a wedge-shaped component that is narrower at the top and wider at the bottom; the door pushing device (C3) is a plate or column fixed and erected on the tilting machine crossbeam (C2), the door pushing device (C3) advancing or retracting along the wedge of the door lifting component (B9).

4. The movable cover device for the roller pressing zone according to claim 1, characterized in that, A physical limiting door catch (B8) is provided between the movable cover (B3) and the inlet end of the roller press cover (B6). The physical limiting door catch (B8) is used to fix the inner wall of the movable cover (B3) in the vertical direction when the movable cover (B3) falls and closes.

5. The movable cover device for the roller pressing zone according to claim 4, characterized in that, The movable cover (B3) is provided with the first pole of the physical limiting door suction (B8) on both sides, and the roller press cover (B6) is provided with the second pole of the physical limiting door suction (B8) on the inner side of the inlet end. When the first pole and the second pole attract each other, the movable cover (B3) is in a vertical state and closes the inlet end of the roller press cover (B6).

6. The movable cover device for the roller pressing zone according to claim 1, characterized in that, The slag pot tilting machine (C) is equipped with slag baffles (C1) on both sides. The distance between the outer walls of the two slag baffles (C1) is smaller than the distance between the inner walls of the roller press cover (B6). A high-temperature resistant soft seal is provided between the slag baffles (C1) and the roller press cover (B6).

7. The movable cover device for the roller pressing zone according to claim 1, characterized in that, The slag pot tilter (C) is equipped with a slag pot (D), and the slag pot tilter (C) is used to pour the molten steel slag in the slag pot (D) into the rolling zone.

8. The movable cover device for the roller pressing zone according to claim 1, characterized in that, The roller press cover (B6) has two openings (B2) at the inlet ends of its two side walls so that the tilting machine beam (C2) on the slag pot tilting machine (C) does not interfere with the roller press cover (B6) when the machine is moving.

9. A movable cover device for a roller pressing zone according to claim 8, characterized in that, The opening (B2) is sealed with a high-temperature resistant soft sealing material.

10. A movable sealing device at the inlet end of a roller pressing zone, characterized in that, Includes the movable cover device for the roller pressing area as described in any one of claims 1 to 9.

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