Device for pelletizing materials

Abstract

The present invention describes a material pelletizing device (10) comprising an inclinable pelletizing disk (3) configured to rotate and a plurality of adjustable scraper modules (7) attachable to the pelletizing disk (3), each adjustable scraper module (7) of the plurality of adjustable scraper modules (7) including a scraper blade (16) and being configured to rotate the scraper blade (16) in three angular directions.

Description

Technical Field

[0001] The present invention relates to the field of devices for agglomerating materials. Specifically, the present invention relates to a device for pelletizing materials.

Background Art

[0002] In mining operations, fine fragments of iron ore from the mine are often crushed, especially with fluxes such as dunite, magnesite, limestone, etc., and subsequently receive a certain amount of binder (e.g., hydrated lime, bentonite, organic binder, etc.) for the purpose of aggregating the fine particles.

[0003] To produce pellets, this pre-homogenized mixture is subjected to a pelletizing process using a device such as a pelletizing disk or plate, where the ultrafine particles are agglomerated to form substantially spherical pellets.

[0004] Subsequently, the pellets are classified on a sieve to remove fine powder and coarse-grained materials. The fine powder and coarse-grained materials, after breaking up, return to the pelletizing disk, and the pellets that have already been classified to the desired diameter are fed into a sintering furnace for respective hardening.

[0005] Pelletizing devices can also be used to agglomerate or pelletize other materials such as primary materials, and even secondary materials such as fertilizers, filter out dust or other mixtures and wastes to provide better handling, and / or avoid separation.

[0006] The pelletizing disk generally comprises a tiltable rotating plate having inside a set of scrapers that stabilize the flatness and height of the lower layer of the disk and guide the flow of the material being pelletized. The diameter of the pellets is defined by the process of rolling and aggregating the particles in combination with the centrifugal force provided by the rotation of the plate.

[0007] Pelletizing devices are known in the prior art. BR112012024643(Bl) discloses a pelletizing device for pelletizing a pelletizable material, the pelletizing device comprising at least one pelletizing disk that is inclined with respect to the horizontal and rotatably provided, the pelletizing disk being driven by a motor device, the pelletizing disk having at least one bottom and at least one side wall, the bottom and the side wall forming a processing space, the size of which is changeable, the effective height of the side wall being changeable, the side wall comprising an inner side wall device and an outer side wall device, wherein the inner side wall device is arranged and its height can be adjusted relative to the outer side wall device.

[0008] Chinese Utility Model Patent No. 207153646 describes a pelletizing device having an adjustable scraper, which consists of a frame and a disk obliquely installed on the frame, the disk being able to rotate about its axis. This device also includes a drive mechanism for rotating the disk, and includes a beam disposed above the disk opening and fixedly connected to the frame, the beam being hollow and having a coaxial rotating shaft passing through the beam. The end of the beam is fixed by a support arm, various adjustment holes are present on the support arm adjustment disk, and two support arms are fixedly connected to the two ends of the rotating shaft respectively. The two support arms are fixedly connected to the two ends of the rotating shaft respectively, and corresponding adjustment holes are provided on the support arms. The connection hole and the adjustment hole can be connected by a pin shaft, a scraper adjustment plate is provided at the lower end of the support arm, and adjustment holes distributed on the same circumference are opened in the scraper adjustment plate.

[0009] Canadian Patent Invention No. 2,411,041 discloses a groove-opening device comprising a disk rotatably fixed to a device, wherein a groove is formed adjacent to the rear surface of the disk when the disk engages the ground. The scraper has a scraper blade oriented substantially parallel to the rear surface of the disk, and the scraper blade is mounted such that the scraper blade is oriented near or in contact with the lower portion of the rear surface adjacent to the outer edge of the disk. The scraper is attached to the device in an adjustable manner such that the scraper blade can move inward along the rear surface of the disk as the disk wears while remaining substantially parallel to and near or in contact with the rear surface of the disk. A distribution tube for agricultural materials can be attached to the device so as to move in conjunction with the scraper, and the scraper can be inclined with respect to the surface of the disk.

[0010] Chinese Utility Model No. 2,325,105 discloses a coating plate for a rotating disk for granulating materials, which is suitable for a disk-ball machine in the metallurgical industry and the sintering industry. A mixer can be used as a coating for the base plate. The lining plate is composed of an outer ring lining plate, an inner ring lining plate, and a central lining plate. Each part is formed by combining a plurality of sector cladding plates having the same shape, and the cladding plate is provided with a pattern formed by grooves or concave depressions. The grooves may be in a network of straight lines, arcs, and prisms. The concave depressions may be circular, elliptical, square, or triangular.

[0011] As can be seen, none of the cited documents describe a device that can provide precise control of the movement of the scraper on the pelletizing disk and reduce human intervention in the operation and maintenance of the disk.

Prior Art Documents

Patent Documents

[0012] [Patent Document 1] BR112012024643(Bl) [Patent Document 2] Specification of Chinese Utility Model No. 207153646 [Patent Document 3] Specification of Canadian Patent Invention No. 2411041 [Patent Document 4] Specification of Chinese Utility Model No. 2325105 [Summary of the Invention] [Problems to be Solved by the Invention]

[0013] An object of the present invention is to provide a material pelletizing device configured to accurately control the movement of a scraper on a pelletizing disk.

[0014] Another object of the present invention is to provide a material pelletizing device capable of reducing human intervention in the operation and maintenance of a pelletizing disk. [Means for Solving the Problems]

[0015] The present invention discloses a material pellet forming device comprising an inclined and rotatable pellet forming disk and a plurality of adjustable scraper modules attachable to the pellet forming disk, each adjustable scraper module of the plurality of adjustable scraper modules including a scraper blade and being configured to rotate the scraper blade in three angular directions. [Brief Description of the Drawings]

[0016] The figure of the material pelletizing device is briefly described as follows.

Figure 1

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DETAILED DESCRIPTION OF THE INVENTION

[0017] The following description is based on a preferred embodiment of the present invention applied to a device for pelletizing materials.

[0018] The present invention provides a material pellet forming device comprising an inclinable and rotatably provided pellet forming disk and a plurality of adjustable scraper modules attachable to the pellet forming disk, each adjustable scraper module of the plurality of adjustable scraper modules includes a scraper blade and is configured to rotate the scraper blade in three angular directions.

[0019] An example of a material pellet forming device is shown in FIG. 1. The material pelletizing device 10 includes a pelletizing disk 3. The inclination of the pelletizing disk 3 is adjustable and it is set to rotate around its own axis during operation.

[0020] The material pelletizing device 10 includes a plurality of adjustable scraper modules 7 attachable to the pelletizing disk 3 and a discharge ramp 4. In this embodiment, the pelletizing disk 3 includes 2 to 10 adjustable scraper modules 7. Preferably, the plurality of adjustable scraper modules 7 includes seven adjustable scraper modules 7.

[0021] In this preferred embodiment, the adjustable scraper module 7 is an electromechanical module that controls the movement of the scraper blade 16 by angle adjustment, which individually controls the height, horizontal and top angle of each scraper blade 16 via a set of linear actuators 12.

[0022] FIG. 2 schematically shows a material pelletizing device 10 having a pedestal 5 for accommodating the adjustable scraper module 7 and attachable to the pelletizing disk 3. Preferably, the pedestal 5 comprises a metal structure with a welded outer shape and can be attached to the pelletizing disk 3 by flanges.

[0023] The pedestal 5 can include a passage for accessing the adjustable scraper module 7. The pedestal 5 is also configured to support the electrical connectors of the adjustable scraper module 7. This pedestal 5 enables an employee to access the adjustable scraper module 7 during maintenance of these components and to guide and position them during replacement.

[0024] Figure 3 schematically shows the discharge lamp 4. The discharge lamp 4 is made of sheet metal, preferably stainless steel, to reduce the adhesion and wear of the material slurry. Further, in its preferred configuration, the discharge lamp 4 is composed of only two metal sheets joined to each other to reduce the number of edges on this component, and as a result, reduce the adhesion points of the material slurry. To prevent the material slurry from adhering to the discharge lamp 4, the screws used to fix the metal sheets must have flat heads.

[0025] To help reduce the adhesion of the material slurry, the discharge lamp 4 includes a motor vibrator 8 installed in the area where the adhesion occurs most. The vibration induced by the electric vibrator 8 on the discharge lamp 4 removes the slurry of the material adhering to the discharge lamp 4 during the pelletization process.

[0026] Figure 4 schematically shows the plate 6 of polymer balls mounted on the metal rod and a plurality of plates 6 attached to the pelletizing disk 3 of the pelletizing device 10.

[0027] Preferably, the bottom wall of the pelletizing disk 3 is covered by a plurality of polymer ball plates 6 mounted with steel bars to reduce the weight of the lower layer of the pelletizing disk 3.

[0028] Further, in its preferred configuration, to reduce the weight of the pelletizing disk 3 and as a result, reduce the energy consumption of the pelletizing device 10, the polymer balls constituting the polymer ball plate 6 are hollow. In this preferred configuration, the polymer balls are preferably manufactured by an additive manufacturing process such that the polymer balls are printed in rows having slots for assembling into modules on the polymer ball plate 6. These fixtures, in their most preferred configuration, consist of male and female fixtures that help connect the rows of polymer balls.

[0029] In addition to the fixture, in their preferred configuration, the polymer balls that make up the polymer ball plate 6 are provided with a shelf portion having holes that join the polymer balls and allow the steel bar to pass through, which enables the row of polymer balls to be joined to the steel bar path through both the fixture and the protrusion, and the polymer ball plate 6 is formed through this association of the row of polymer balls (see Figure 4).

[0030] In their preferred configuration, the polymer ball plate 6 is fixed to the bottom wall of the pelletizing disk 6 by welding the steel bar to the bottom wall of the pelletizing disk 6. Welding the steel bar to the bottom wall of the pelletizing disk 6 ensures that the polymer ball plate 6 does not separate during movement.

[0031] In their further preferred configuration, to assist this fixation and prevent the material from accumulating in the space defined between the polymer balls of the polymer ball plate 6 and impairing the formation of the base layer of the material, an expandable adhesive material is applied. More specifically, a foamed expansion layer of PU or any other material that can fill the empty spaces that may exist between the polymer balls during the fixation of the polymer ball plate 6, reduce the weight, and help fix this component next to the pelletizing disk 3 is applied.

[0032] In an alternative configuration, the polymer ball plate 6 can be attached simply by applying an expandable foam without the need to weld the steel bar to the bottom wall of the pelletizing disk 3. The polymer ball plate 6 can be attached to the bottom wall of the pelletizing disk 3 and can be attached by means other than those described in this report.

[0033] Figure 5 schematically shows the adjustable scraper module 7 of the material pelletizing device 10. The adjustable scraper module 7 can be attached to the pelletizing disk 3. Each adjustable scraper module 7 of the plurality of adjustable scraper modules 7 includes a scraper blade 16. Each adjustable scraper module 7 is configured to move the scraper blade 16 in three angular directions.

[0034] Preferably, each adjustable scraper module 7 of the plurality of adjustable scraper modules 7 further comprises three linear actuators 12 coupled to the scraper blade 16. The scraper blade 16 comprises a metal structure having a central portion 16' for attachment to the linear actuator 12 and an elongated lower portion 16" to which the scraping stone 17 is attached and which is in direct contact with the material on the pelletizing disk 3.

[0035] The linear actuator 12 can be coupled to an electric actuator. In this embodiment, the linear actuator 12 converts the rotational movement of the electric actuator into a linear movement for adjusting the position of the scraper blade 16. This adjustment of the position of the scraper blade 16 is essential for adjusting its height, angle with respect to the vertical axis, and angle with respect to the horizontal axis, and can interfere with the productivity and efficiency of the pelletizing device 10.

[0036] Since the wear of the scraping stone 17 placed in contact with the material on the pellet forming disk 3 is not uniform, this adjustment of the position of the scraper blade 16 also makes it possible to compensate for this wear in a specific area of the scraping stone 17, which helps productivity by extending the service life of this component and consequently reducing the frequency of device downtime for replacement.

[0037] To gain a better understanding of the non-uniform wear of the scraping stone 17 in its preferred configuration, the scraping stone comprises at least two sacrificial sensors 35 for monitoring its wear. The sacrificial sensors 35 are fixed at each distal end of the scraping stone 17 since most of the wear on the scraping stone 17 occurs at its ends, as shown in FIG. 6.

[0038] The sacrificial sensor 35 consists of an electronic circuit that can change its impedance when worn together with the scraping stone 17. Therefore, in order to obtain information regarding this impedance change, it is necessary to use an electronic device to collect this data, which can be common to the electronic control device of the platoon running device of the present invention.

[0039] From the data of the sacrificial sensor 35, automatic control can be implemented to correct the position of the scraper blade by the linear actuator 12 when there is wear in the operation of the scraping stone 17. Further, the three linear actuators 12 are supported by the frame 13. The housing 13 is a fixed structural element of the adjustable scraper module 7. Preferably, the housing 13 is made of welded structural steel plates and has machined elements fixed by bolts or lock pins. This housing 13, in its preferred configuration, further comprises a bottom side wall 13' with an angle of 13' corresponding to the rack 5 on which it is installed, which enables an exact fit between the adjustable scraper module 7 of the pelletizing device 10 and the rack 5.

[0040] In this way, when it is necessary to replace the adjustable scraper module 7 or perform its initial installation, it is lifted by lifting the device and positioned on the stand 5. As a result, the angled bottom side wall 13' of the housing 13 is useful when fitting the adjustable scraper module 7 and positioning it next to the diesel 5.

[0041] In addition to the angled bottom side wall 13', the housing 13 of the adjustable scraper module 7 is provided with a side latch 13" having a spring pin configured to fit into the eyelet 5' of the support on the diesel 5, as shown in FIG. 9. This enables the association and actual separation of the adjustable scraper module 7 with the diesel 5 when it is necessary to replace the adjustable scraper module 7 entirely.

[0042] FIG. 7 shows a schematic view of the housing 13 and the table 14 of the adjustable scraper module 7 of the pelletizing device material. FIG. 8 shows the head 15 and the scraper blade 16 of the adjustable scraper module 7 of the material pelletizing device 10, emphasizing the quick lock mechanism.

[0043] The scraper blade 16 of each adjustable scraper module 7 of the plurality of adjustable scraper modules 7 can be coupled to the head 15, and the head 15 can be pivotally coupled to the table 14. In this embodiment, the head 15 is a movable component that supports the scraper blade 16 to perform the top angle adjustment movement of the scraper blade.

[0044] Furthermore, the table 14 is a movable component that provides height and tilt control and couples the head 15 to the housing 13, which enables the angular movement of the head 15. The head 15 of the housing 13 and the central portion 16' of the scraper blade 16 are provided with a quick lock mechanism that enables easy replacement of the scraper blade 16 of the adjustable scraper module 7. It is easy to replace the scraper blade 16 of the adjustable scraper module 7 when the scraper stone 17 wears out.

[0045] In its preferred configuration, this quick lock mechanism consists of a groove-shaped wedge fit such that the head 15 has a wedge-shaped conical slot 30 and the central portion 16' of the scraper blade 16 has a protrusion corresponding to the conical slot 30 of the head 15. In a further preferred configuration, the quick lock mechanism also includes a side hook 31 disposed on the central portion 16' of the scraper blade 16, which corresponds to the side ear portion 32 of the head 15 and ensures locking when the engagement is completed.

[0046] These side hooks 31 are equipped with a spring mechanism 33 associated with the lifting eye 34 of the central portion 16' of the scraper blade 16. As a result, when the scraper blade 16 is lifted by the lifting eye 34 for its replacement, the side hooks 31 are moved and separated from the side projections 32 of the head 15, allowing the scraper blade 16 to slide vertically with respect to the head 15, removing the male and female fittings, and enabling a quick and practical separation of the scraper blade 16 for replacement (see Figure 8).

[0047] Similarly, when it is necessary to install a new scraper blade 16, it is sufficient for the projection of its central portion 16' to be inserted into the conical slot 30 of the head 15, and as a result, gravity causes the fitting and locking occurs via the lateral hooks 31.

[0048] In an alternative configuration, the quick-lock mechanism may include elements other than the male and female fittings and the side hook locks 31, and it is only essential that the scraper blade 16 can be separated and associated with the head 15 for replacement after wear of the scraping stone 17.

[0049] The linear actuators 12 of the adjustable scraper module 7 of the material pellet forming device 10, in their preferred configurations, include a communication module that enables them to be operated and adjusted remotely and in real time, which allows the position of the scraper blade 16 to be remotely adjusted and changed in the control room or on a local panel equipped with an HMI (Human-Machine Interface). Further, these linear actuators 12, in their preferred configurations, further include built-in sensors that enable the identification of the current position of the scraper blade 16, as well as the respective states of the linear actuators 12, including but not limited to temperature, current, vibration, torque, etc. This enables the quick identification of faults in these components.

[0050] In this way, the adjustable scraper module 7 of the material pelletizing device 10 includes a communication module for remote control of the linear actuator 12, so that the scraper blade 16 can be remotely and real-time controlled in the control room or another location.

[0051] Figure 10 shows the roller screen 20 and the deflector element 9 of the material pelletizing device 10. The deflector element 9 comprises a frame 18 coupled to a deflector plate 19 adjustable by an adjustment mechanism 26. These deflector plates 19, in their preferred configuration, are provided with a non-stick material coating layer that is essential for preventing the accumulation of material on their contact surfaces and thus enhancing the efficiency of the pellet distribution process. The structure 18 of the deflector element 9 also includes lifting eyes 18' dispersed on the deflector element 9 to enable lifting of the device when it needs to be removed for maintenance.

[0052] Furthermore, in its further preferred configuration, the structure 18 of the deflector element 9 is fixed by a pivoting mechanism, so that it is possible to perform a pivoting movement by lifting with its lifting eyes 18', which prevents the entire deflector element 9 from being removed for maintenance on this device. In this way, through this pivoting mechanism, it is possible to change the orientation of the structure 18 from horizontal to vertical without the need for complete removal, facilitating maintenance and access to other components of the deflector element 9.

[0053] Preferably, the deflector element 9 is configured to move the deflector plate 19 in a direction transverse to the flow of material, pivot the deflector plate 19, and adjust both their position and their angulation with respect to the horizontal axis. The adjustment mechanism 26, in its preferred configuration, consists of a spindle assembly 26' that passes through trolleys 26" and is supported by bearings on the frame 18 of the deflector element 9 to move the deflector plate 19 longitudinally, with a set of 26" spindles and 26" trolleys for each deflector plate 19 to ensure independent movement of each deflector plate 19 with respect to the other.

[0054] In its further preferred configuration, the trolleys 26" are fixed to its structure and move linearly by wheels supported on the structure 18 of the deflector element 9, so that when driven by the spindles 26', these supported wheels guide the trolleys 26" along with the deflector plate 19 along the structure 18. In an alternative configuration, the 26" trolleys can be guided by components other than wheels mounted on the 18" frame, such as linear guides.

[0055] Each movement of the trolleys 26" of the deflector plate 19 is independent, i.e., each is moved by the linear actuator 12 and the spindle 26', so that in their preferred configuration they have a protection mechanism. A programmed collision that prevents them from colliding during operation. Such a collision protection mechanism can be a physical barrier in an alternative configuration.

[0056] This deflector element 9 is essential for dispersing the pellet flow before the pellets enter the roller screen 20 in order to ensure efficient screening and greater uniformity of wear on the roller 22 of the roller screen 20. The adjustment mechanism 26 of the deflector element 9 is also driven by a linear actuator 12 that can be remotely operated to adjust both the position and the orientation of the deflector plate 19. In addition to the adjustment mechanism 26, the deflector element 9 also comprises two angular actuators 12' associated with each deflector plate 19 for adjusting its angular position (see Figure 10).

[0057] In this way, it is possible to position the deflector plate 19 by means of the adjustment mechanism 26 and the angular actuators 12' such that they contact the pellets emerging from the discharge ramp 4 of the pelletizing disk 3 and disperse the pellets uniformly onto the roller sieve 20.

[0058] Preferably, the material pelletizing device 10 further comprises a roller sieve 20 including a plurality of rollers 22. Even more preferably, the plurality of rollers 22 are coated to reduce wear and adhesion of the material as it passes over the surface of the rollers 22.

[0059] In this embodiment, the roller 22 is coupled to a roller bearing 23, and a roller distance adjustment element 25 is coupled between the roller bearings 23.

[0060] The roller distance adjustment element 25 is configured to adjust the distance between the surfaces of the rollers 22. Figure 11 shows a schematic view of the roller sieve 20 of the material pelletizing device 10.

[0061] Furthermore, Figure 12 shows the access platform 28 of the material pelletizing device 10. Preferably, the access platform 28 is arranged adjacent to the roller screen 20 to enable access to the side region of the roller screen 20 where maintenance and assembly of the roller screen 20 can be carried out.

[0062] The present invention is advantageous in that the material pelletizing device 10 provides accurate control of the movement of the scraper blade 16 on the pelletizing disk 3 in three angular directions by the operation of the adjustable scraper module 7.

[0063] Furthermore, by providing automatic control of the adjustable scraper module 7, the present invention reduces human intervention in the operation and maintenance of the pelletizing disk 3.

[0064] Another advantage of the present invention is to increase the reliability level of components with a shorter mean time to failure and reduce the mean time for repairing the components of the pelletizing device 10.

[0065] In this way, the present invention enhances the overall availability of the pelletizing disk 3 while maintaining higher performance, resulting in an increase in productivity of up to 5% in the pelletizing operation. This also strengthens the fact that the present invention is not limited to the configurations / embodiments described above.

Claims

1. An inclinable and rotatable pelletizing disk (3), and A plurality of adjustable scraper modules (7) attachable to the pelletizing disk (3), each adjustable scraper module (7) of the plurality of adjustable scraper modules (7) including a scraper blade (16) and being configured to rotate the scraper blade (16) in three angular directions, the plurality of adjustable scraper modules (7). A material pelletizing device (10), characterized by comprising the same.

2. The plurality of adjustable scraper modules (7) comprises 2 to 10 of the adjustable scraper modules (7), each adjustable scraper module (7) of the plurality of adjustable scraper modules (7) further comprising three linear actuators (12) coupled to the scraper blade (16), the three linear actuators (12) being coupled to an electric actuator and the three linear actuators (12) being supported by a housing (13), the device (10) according to claim 1.

3. The scraper blade (16) of each adjustable scraper module (7) of the plurality of adjustable scraper modules (7) is coupled to a head (15), and the head (15) is pivotally coupled to a table (14), the device (10) according to claim 1 or 2.

4. The coupling between the scraper blade (16) and the head (15) is effected by a quick-lock mechanism consisting of male and female fixtures, the device (10) according to claim 3.

5. The quick-locking mechanism comprises a wedge-shaped conical slot (30) disposed on the head (15) for forming the male and female fixtures, and a protrusion on the scraper blade (16) corresponding to the conical slot (30), and further comprises a side hook (31) on the scraper blade (16) corresponding to a side protrusion (32) disposed on the head (15), the device (10) according to claim 4.

6. The side hook (31) is equipped with a spring mechanism (33) associated with a lifting eye (34), and the lifting eye (34) is arranged on the scraper blade (16) to move the side hook (31) when the scraper blade (16) is lifted using the lifting eye (34). The device (10) according to claim 5, characterized in that.

7. The device (10) further comprises a rack (5) attachable to the pelletizing disk (3), and the rack (5) is configured to accommodate the plurality of adjustable scraper modules (7). The device (10) according to claim 1 or 2, characterized in that.

8. The housing (13) of the adjustable scraper module (7) is provided with an angled bottom side wall (13') having an angle corresponding to the angle of the gantry (5) for fitting and accommodating the adjustable scraper module (7) on the gantry (5). The device (10) according to claim 7, characterized in that. For fitting and accommodating the adjustable scraper module (7) on the gantry (5), it has an angle (13') corresponding to the angle of the gantry (5).

9. The housing (13) is provided with a side latch (13") having a spring pin, and the spring pin is configured to enter an eyebolt (5') arranged on the gantry (5) to effect the fixing between these components. The device (10) according to claim 8, characterized in that.

10. The device (10) further comprises a discharge lamp (4), and the discharge lamp (4) is provided with at least one motor vibrator (8). The device (10) according to any one of claims 1 to 3, characterized in that.

11. The pelletizing disk (3) is provided with a bottom wall covered by a plurality of polymer ball plates (6). The device (10) according to any one of claims 1 to 3, characterized in that.

12. The polymer ball plate (6) is composed of hollow polymer balls manufactured by an additive manufacturing process, which are associated using male and female fixtures and steel bars to form the polymer ball plate (6). The device (10) according to claim 11, characterized in that.

13. The device (10) further comprises a deflector element (9) including a structure (18) coupled to a deflector plate (19) adjustable longitudinally by an independent adjustment mechanism (26) driven by a linear actuator (12), characterized in that the device (10) according to any one of claims 1 to 3.

14. The deflector element (9) further comprises an angle actuator (12') associated with the deflector plate (19) for adjusting the angle of the deflector plate (19), enabling independent adjustment for each deflector plate (19), characterized in that the device (10) according to claim 13.

15. The linear actuator (12) and the angle actuator (12') are provided with a communication module enabling them to be remotely operated and controlled, characterized in that the device (10) according to any one of claims 1 to 14.

16. The device (10) further comprises a roller screen (20) including a plurality of rollers (22), characterized in that the device (10) according to any one of claims 1 to 3.

17. The roller (22) is coupled to a roller bearing (23), and a roller distance adjustment element (25) is coupled between the roller bearings (23), characterized in that the device (10) according to claim 16.

18. The roller bearing (23) is fixed to the upper part of the roller screen (20) by a lower fixed bar, characterized in that the device (10) according to claim 17.

19. The device (10) further comprises an access platform (28) adjacent to the roller screen (20), characterized in that the device (10) according to any one of claims 1 to 17.

20. The device (10) further comprises a sacrificial sensor (35) coupled to the scraping stone (17), characterized in that the device (10) according to any one of claims 1 to 18.

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