Material granulation equipment

Abstract

The present invention provides a material granulation device (10) comprising a tiltable granulation disc (3) rotatably arranged, and a plurality of adjustable scraper modules (7) mountable to the granulation disc (3), where each of the plurality of adjustable scraper modules (7) comprises a blade (16) and is configured to rotate the blade (16) in three angular directions.

Description

Technical Field

[0001] The invention relates to the field of material agglomeration equipment, in particular to material granulation equipment. Background Art

[0002] In mining operations, the fine particles of iron ore in the mine are usually ground using fluxes such as dolomite, magnesite, limestone, etc., and then a certain amount of binder (such as slaked lime, bentonite, organic binder, etc.) is added to agglomerate the fine particles.

[0003] To produce granules, the pre-homogenized mixture is granulated using equipment such as a granulating disk. During the granulation process, the fine particles are agglomerated to form essentially spherical particles.

[0004] Subsequently, the granules are classified by a screen to remove fine powder and coarse material, wherein the fine powder and coarse material are returned to the granulation disk after classification, while the granules classified to the required diameter are sent to the sintering furnace for hardening.

[0005] The granulation equipment can also be used to agglomerate or granulate other materials, such as primary and secondary materials, such as fertilizers, filter dust or other mixtures and waste materials, for better handling and / or to avoid separation.

[0006] The granulation disc usually consists of an inclined rotating disc with a scraper set inside the disc to stabilize the flatness and height of the disc bottom layer and guide the flow of the granulated material. The diameter of the particles can be determined by the rolling and agglomeration process of the particles, coupled with the centrifugal force generated by the rotation of the disc.

[0007] Granulation equipment is known in the art. Document BR112012024643 (B1) discloses a granulation equipment for granulating a granulable material, the equipment comprising at least one granulation disk inclined and rotatable relative to a horizontal plane, the granulation disk being driven by a motor and having at least one bottom and at least one side wall, the bottom and the side wall forming a processing space, the size of the processing space being variable, the effective height of the side wall being also variable, the side wall comprising an inner side wall device and an outer side wall device, wherein the arrangement of the inner side wall device enables it to be adjusted relative to the height of the outer side wall device.

[0008] Document CN207153646(U) discloses a granulation device with an adjustable scraper, which includes a frame and a disc obliquely mounted on the frame; the disc can rotate around its axis. The granulation device also includes a driving mechanism for rotating the disc, and a crossbeam located above the opening of the disc, the crossbeam is fixedly connected to the frame; the crossbeam is hollow and has a coaxial rotating shaft passing through it. Support arms are fixed at both ends of the crossbeam, and a plurality of adjustment holes are provided on the adjustment disk of the support arm; 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 arm. The connecting 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 along the same circumference are provided on the scraper adjustment plate.

[0009] Document CA2411041(C) discloses a trencher device comprising a disc rotatably connected to the device so that when the disc rotates in contact with the ground, a groove can be formed near the back of the disc. A soil cutter has a blade substantially parallel to the back of the disc, and the blade is mounted close to or in contact with the lower back portion near the outer edge of the disc. The soil cutter is connected to the device in an adjustably manner so that the blade of the soil cutter can move inwardly along the back of the disc when the disc wears, while remaining substantially parallel to the back of the disc and close to or in contact with the back of the disc. An agricultural material distribution pipe can be connected to the device so that it moves synchronously with the soil cutter and the soil cutter can be tilted against the surface of the disc.

[0010] Document CN2325105 (Y) discloses a liner for a rotating disc for granulating materials, which is suitable for disc pelletizing machines in metallurgical and sintering industries. The agitator can be used as a liner for the bottom plate. The liner consists of an outer ring liner, an inner ring liner and a center liner. Each part is composed of a plurality of sector liner plates of the same shape, and the liner is provided with a pattern formed by grooves or notches. The grooves can be linear, arc-shaped and prismatic mesh-shaped. The notches can be circular, elliptical, square or triangular.

[0011] It can be seen that none of the devices in the cited literature can facilitate precise control of the scraper movement on the granulating disk, nor can it reduce manual intervention in the operation and maintenance of the granulating disk.

[0012] Purpose of the Invention

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

[0014] Another object of the present invention is to provide a material granulation device which can reduce manual intervention in the operation and maintenance of the granulation disk. Summary of the invention

[0015] The present invention discloses a material granulation device, which comprises a rotatable and tiltable granulation disk, and a plurality of adjustable scraper modules which can be mounted on the granulation disk, wherein each of the plurality of adjustable scraper modules comprises a blade, and is configured to enable the blade to rotate in three angular directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following is a brief description of the material granulation equipment attached:

[0017] Figure 1 It is a schematic diagram of the material granulation equipment;

[0018] Figure 2 is a schematic diagram of a material granulation device, including a frame for mounting an adjustable scraper module;

[0019] Figure 3 It is a schematic diagram of the discharge ramp of the material granulation equipment;

[0020] Figure 4 It is a schematic diagram of a polymer microsphere plate mounted on a metal rod and multiple plates mounted on a granulation disk of a granulation device;

[0021] Figure 5 It is a schematic diagram of an adjustable scraper module of a material granulation equipment;

[0022] Figure 6 It is a schematic diagram of the scraper wear monitoring device.

[0023] Figure 7 It is a schematic diagram of the housing and turntable of the adjustable scraper module of the material granulation equipment;

[0024] Figure 8 It is a schematic diagram of the blade head and blade of the adjustable scraper module of the material granulation equipment;

[0025] Fig. 9 It is a schematic diagram of an adjustable scraper module and a frame of a material granulation equipment;

[0026] Fig.10 is a schematic diagram of a drum screen and deflector element of a material granulation equipment;

[0027] Fig.11 is a schematic diagram of a drum screen of a material granulation equipment; and

[0028] Fig.12 It is a schematic diagram of the material granulation equipment including the maintenance platform. DETAILED DESCRIPTION

[0029] The following describes a preferred embodiment of the present invention applied to a material granulation device.

[0030] The present invention provides a material granulation device, comprising a rotatable and tiltable granulation disk, and a plurality of adjustable scraper modules that can be installed on the granulation disk, each of the plurality of adjustable scraper modules comprising a blade, and being configured to enable the blade to rotate in three angular directions.

[0031] Figure 1 An embodiment of the material granulation device is shown. The material granulation device 10 comprises a granulation disk 3. The inclination of the granulation disk 3 is adjustable, and the granulation disk is configured to rotate around its own axis during operation.

[0032] The material granulation device 10 includes a plurality of adjustable scraper modules 7 that can be mounted on the granulation disk 3 and the discharge ramp 4. In this embodiment, the granulation disk 3 includes 2 to 10 adjustable scraper modules 7. Preferably, the plurality of adjustable scraper modules 7 includes 7 adjustable scraper modules 7.

[0033] In the preferred embodiment, the adjustable scraper module 7 is an electromechanical module that controls the movement of the blade 16 by angle adjustment, and the height, levelness and top angle of each blade 16 are individually controlled by a set of linear actuators 12 .

[0034] Figure 2 Schematically illustrated is a material granulation device 10 with a frame 5 for mounting an adjustable scraper module 7 and connectable to a granulation disk 3. Preferably, the frame 5 comprises a metal structure consisting of welded profiles and can be connected to the granulation disk 3 by means of a flange.

[0035] The frame 5 may include a passage for accessing the adjustable scraper module 7 and be configured to support the electrical connector of the adjustable scraper module 7. This configuration of the frame 5 enables employees to access the adjustable scraper module 7 when maintaining the above components and guide and position them when performing replacement operations.

[0036] Figure 3 Schematic diagram of the discharge ramp 4. The discharge ramp 4 is made of metal plates, preferably stainless steel plates, to reduce slurry adhesion and wear. Further, in its preferred configuration, the discharge ramp 4 is formed by connecting only two metal plates to reduce the number of edges in the component, thereby reducing slurry adhesion points.

[0037] Furthermore, in order to prevent the slurry from forming adhesion points on the discharge ramp 4, the screws used to fix the metal plates must be flat head screws.

[0038] To help reduce slurry adhesion, the discharge ramp 4 includes an electric vibrator 8 installed in the area where adhesion occurs most seriously. During the granulation process, the electric vibrator 8 causes vibrations in the discharge ramp 4, thereby removing slurry adhering to the discharge ramp 4.

[0039] Figure 4 It is a schematic diagram of a polymer microsphere plate 6 mounted on a metal rod and a plurality of plates 6 mounted on a granulation disk 3 of a granulation device 10 .

[0040] Preferably, the bottom wall of the granulation disk 3 is covered with a plurality of polymer microsphere plates 6 assembled by steel rods to reduce the weight of the bottom layer of the granulation disk 3 .

[0041] Further, in its preferred configuration, the polymer microspheres constituting the polymer microsphere plate 6 are hollow to reduce the weight of the granulation disk 3, thereby reducing the energy consumption of the granulation device 10. In this preferred configuration, the polymer microspheres are manufactured by an additive manufacturing process, preferably by a three-dimensional printing process, so that multiple rows of polymer microspheres with inserts can be printed on the polymer microsphere plate 6 for assembly into a module. In the most preferred configuration, the insert is composed of a convex insert block and a concave insert groove, which helps to connect the rows of polymer microspheres together.

[0042] In addition to the insert, further, in its preferred structure, the polymer microspheres constituting the polymer microsphere plate 6 include a protrusion with a hole, which is connected to the polymer microsphere and allows the steel rod to pass through, so that each row of polymer microspheres can be connected through the insert and the protrusion with the steel rod passing through, and then the polymer microsphere plate 6 is formed by connecting each row of polymer microspheres in this way, such as Figure 4 shown.

[0043] In its preferred structure, the fixation between the polymer microsphere plate 6 and the bottom wall of the granulation disk 6 is achieved by welding a steel rod to the bottom wall of the granulation disk 6 to ensure that the polymer microsphere plate 6 will not disintegrate during movement.

[0044] Furthermore, in its preferred structure, in order to help fixation and prevent the material from accumulating in the gaps between the polymer microspheres of the polymer microsphere plate 6 and destroying the formation of the material base layer, an expandable filler is used. More specifically, in the process of fixing the polymer microsphere plate 6, polyurethane expansion foam or any other material that can fill the gaps that may exist between the polymer microspheres is used, thereby helping to reduce weight and fix the component on the granulation disk 3.

[0045] In other configurations, the polymer microsphere sheet 6 may be fixed by applying only expansion foam without welding the steel rods to the bottom wall of the pelletizing disk 3, or by other means than those described herein.

[0046] Figure 5 is a schematic diagram of an adjustable scraper module 7 of a material granulation device 10. The adjustable scraper module 7 can be mounted on a granulation disk 3. Each of the plurality of adjustable scraper modules 7 includes a blade 16. Each adjustable scraper module 7 is configured to enable the blade 16 to move in three angular directions.

[0047] Preferably, each adjustable scraper module 7 of the plurality of adjustable scraper modules 7 further comprises three linear actuators 12 connected to a blade 16. The blade 16 comprises a metal structure having a central portion 16' connected to the linear actuator 12, and an elongated lower portion 16" connected to a scraper 17 which is in direct contact with the material on the granulation disc 3.

[0048] The linear actuator 12 may be connected to the electric actuator. In the present embodiment, the linear actuator 12 converts the rotary motion of the electric actuator into a linear motion, thereby adjusting the position of the blade 16. Such position adjustment of the blade 16 is essential for adjusting its height, angle relative to the vertical axis, and angle relative to the horizontal axis, thereby improving the productivity and efficiency of the granulation device 10.

[0049] Since the wear of the scraper 17 when in contact with the material on the granulating disk 3 is uneven, the position adjustment of the blade 16 can also compensate for the wear in a specific area of ​​the scraper 17, thereby extending the service life of the component, thereby reducing the frequency of equipment shutdown and replacement, and improving productivity.

[0050] In order to better understand the uneven wear of the scraper 17, in its preferred configuration, at least two sensors 35 are included for monitoring its wear. Since the wear of the scraper 17 mainly occurs at its ends, the sensors 35 are fixed at each distal end of the scraper 17, such as Figure 6 shown.

[0051] The sensor 35 consists of an electronic circuit capable of changing the impedance when used in conjunction with the scraper 17. Therefore, in order to obtain information about the impedance change, it is necessary to use electronic means to collect impedance-related data, which data can be shared by the electronic control device of the granulation device of the present invention.

[0052] The data from the sensor 35 can be used to realize automatic control, that is, when the scraper 17 wears during operation, the blade position can be corrected by the linear actuator 12. Further, the three linear actuators 12 are supported by a housing 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 the machined elements are fixed by screws or locking pins. Further, in its preferred configuration, the housing 13 also includes an inclined bottom side wall 13' corresponding to the mounting frame 5 thereof, so that the adjustable scraper module 7 can be precisely matched with the frame 5 of the granulating device 10.

[0053] Thus, when the adjustable scraper module 7 needs to be replaced or initially installed, it is lifted by a lifting device and placed on the frame 5 , so that the inclined bottom side wall 13 ′ of the housing 13 helps to install and position the adjustable scraper module 7 on the frame 5 .

[0054] In addition to the inclined bottom side wall 13', the housing 13 of the adjustable scraper module 7 also includes a side lock 13" with a spring pin, which is configured to be embedded in the ear 5' on the frame 5, such as Fig. 9 As shown, when the adjustable scraper module 7 needs to be replaced as a whole, the actual connection and separation of the adjustable scraper module and the frame 5 can be achieved.

[0055] Figure 7 It is a schematic diagram of the housing 13 and the turntable 14 of the adjustable scraper module 7 of the material granulation equipment. Figure 8 Schematic diagram of the blade head 15 and blade 16 of the adjustable scraper module 7 of the material granulation device 10, in which the quick locking mechanism is emphasized.

[0056] The blade 16 of each adjustable scraper module 7 in the plurality of adjustable scraper modules 7 can be connected to the cutter head 15, wherein the cutter head 15 can be pivotally connected to the turntable 14. In this embodiment, the cutter head 15 is a movable component for supporting the blade 16 to perform an adjustment movement of the blade top angle.

[0057] Furthermore, the turntable 14 is a movable part for providing height and tilt control and is connected to the cutter head 15 of the housing 13, thereby allowing the cutter head 15 to perform angular movement. The cutter head 15 of the housing 13 and the central part 16' of the blade 16 both include a quick locking mechanism, through which the blade 16 of the adjustable scraper module 7 can be easily replaced when the scraper 17 is worn.

[0058] In its preferred configuration, the quick locking mechanism is composed of a male and female wedge-shaped joint, so that the cutter head 15 includes a wedge-shaped tapered groove 30, and the central portion 16' of the blade 16 includes a boss corresponding to the tapered groove 30 of the cutter head 15. Further, in its preferred configuration, the quick locking mechanism also includes a side hook 31, which is arranged in the central portion 16' of the blade 16 and corresponds to the side boss 32 of the cutter head 15, ensuring locking when the embedded assembly is completed.

[0059] The side hook 31 is provided with a spring mechanism 33 associated with a lifting ring 34 of the central portion 16 ′ of the blade 16 , so that when the blade 16 is lifted by the lifting ring 34 for replacement, the side hook 31 moves and separates from the side boss 32 of the cutter head 15 , thereby allowing the blade 16 to slide vertically relative to the cutter head 15 and the male and female joints to be released, so that the blade 16 can be quickly and practically removed for replacement, as Figure 8 shown.

[0060] Likewise, when a new blade 16 is to be installed, it is only necessary to insert the boss of the central portion 16' into the tapered groove 30 of the cutter head 15, so that it can be embedded and locked by the side hooks 31 under the action of gravity.

[0061] In other configurations, the quick locking mechanism may consist of elements other than the male and female connectors and the lock with the side hooks 31, the only essential requirement being that the blade 16 can be connected or disconnected from the cutter head 15 so that the scraper 17 can be replaced after it has worn.

[0062] In its preferred configuration, the linear actuator 12 of the adjustable scraper module 7 of the material granulation device 10 includes a communication module, through which the linear actuator can be remotely actuated and adjusted in real time, so that the position of the blade 16 can be remotely changed in a control room or a local panel equipped with a human-machine interface (HMI). Further, in its preferred configuration, the linear actuator 12 includes a built-in sensor that can identify the current position of the blade 16 and the condition of each linear actuator 12, for example, including but not limited to temperature, current, vibration, torque, etc., so that the failure of these components can be quickly identified.

[0063] Since the linear actuator 12 includes a communication module for remote control, the blade 16 can be remotely controlled in real time in a control room or other locations through the adjustable scraper module 7 of the material granulation device 10 .

[0064] Fig.10is a schematic diagram of a drum screen 20 and a deflector element 9 of a material granulation device 10. The deflector element 9 comprises a frame 18 connected to an adjustable deflector plate 19 by an adjustment mechanism 26. In its preferred configuration, the deflector plate 19 is provided with a non-stick material coating, which is essential to prevent the accumulation of material on its contact surface, thereby improving the efficiency of the granule distribution process. The frame 18 of the deflector element 9 also comprises lifting ears 18' distributed therein, so that the device can be lifted when it is necessary to dismantle the device for maintenance.

[0065] Furthermore, in its preferred configuration, the frame 18 of the deflector element 9 is fixed by a pivot mechanism so that the pivoting movement can be achieved by lifting it by its lifting lugs 18', thereby avoiding the need to remove the entire deflector element 9 when performing maintenance on the device. In this way, by means of the pivot mechanism, the orientation of the frame 18 can be changed from horizontal to vertical without having to completely remove it, thereby facilitating maintenance and inspection of other components of the deflector element 9.

[0066] Preferably, the deflector element 9 is configured to move the deflector plate 19 in the transverse direction of the material flow and to pivot the deflector plate 19 so as to adjust its position and angle relative to the horizontal axis. In its preferred configuration, the adjustment mechanism 26 comprises a spindle assembly 26' which passes through a trolley 26" and is supported by bearings in the frame 18 of the deflector element 9 so as to move the deflector plate 19 in the longitudinal direction, each deflector plate comprising a set of spindles 26' and trolleys 26" to ensure that each deflector plate 19 moves independently relative to the other deflector plates.

[0067] Furthermore, in its preferred configuration, the trolley 26" achieves its linear movement by means of wheels fixed to its structure and supported by the frame 18 of the deflector element 9, so that, driven by the spindle 26', these supported wheels guide the trolley 26" to move along the frame 18 together with the deflector plate 19. In other configurations, in addition to the wheels supported on the frame 18, the trolley 26" can also be guided by other components, such as linear guides.

[0068] Since each of the trailers 26" of the deflector 19 moves independently, that is, each trailer is driven by the linear actuator 12 and the spindle 26', in its preferred configuration, these trailers are programmed with a collision protection mechanism that prevents them from colliding during operation. In other configurations, this collision protection mechanism can be a physical barrier.

[0069] The deflector element 9 is essential for distributing the particle flow before it enters the drum screen 20, in order to ensure screening efficiency and to make the wear of the drum 22 of the drum screen 20 more uniform. The adjustment mechanism 26 of the deflector element 9 is also actuated by the linear actuator 12, which can be remotely actuated to adjust the position and angle of the deflector plate 19. In addition to the adjustment mechanism 26, the deflector element 9 also includes two angle actuators 12', which are associated with each deflector plate 19 to adjust its angular position, such as Fig.10 shown.

[0070] In this way, the deflector plate 19 can be positioned by the adjustment mechanism 26 and the angle actuator 12 ′ so as to contact the outflowing particles from the discharge ramp 4 of the granulation disk 3 , so that the particles are evenly distributed on the drum screen 20 .

[0071] Preferably, the material granulation device 10 further comprises a drum screen 20 composed of a plurality of drums 22. More preferably, the plurality of drums 22 are all provided with a coating to reduce abrasion and adhesion of the material when passing through the surface thereof.

[0072] In the present embodiment, the roller 22 is connected to the roller bearings 23 , and the roller gap adjusting element 25 is installed between the roller bearings 23 .

[0073] The roller spacing adjustment element 25 is used to adjust the distance between the surfaces of the roller 22 . Fig.11 Schematic diagram of a drum screen 20 of a material granulation device 10 .

[0074] Furthermore, Fig.12 is a schematic diagram of an inspection platform 28 of the material granulation device 10. Preferably, the inspection platform 28 is arranged adjacent to the drum screen 20 to allow access to the side area of ​​the drum screen 20 so as to perform maintenance and assembly on the drum screen 20.

[0075] The advantage of the present invention is that the material granulation device 10 can accurately control the movement of the blade 16 on the granulation disk 3 in three angular directions by actuating the adjustable scraper module 7 .

[0076] Furthermore, the present invention reduces manual intervention in the operation and maintenance of the granulation disk 3 by providing automatic control of the adjustable scraper module 7 .

[0077] Another advantage of the present invention is that it improves the reliability level of components, prolongs the mean time between failure of components of the pelletizing apparatus 10, and shortens the mean time between repairs thereof.

[0078] In this way, the present invention increases the overall availability of the pelletizing disc 3 while maintaining its high performance, thereby increasing the productivity of the pelletizing operation by up to 5%. It should also be noted that the present invention is not limited to the specific pelletizing configuration / embodiment described above.

Claims

1. A material granulation device (10), Features ,include: a rotatably arranged tiltable granulation disc (3), and A plurality of adjustable scraper modules (7) can be mounted on the granulation disk (3), wherein each adjustable scraper module (7) comprises a blade (16) and is configured to enable the blade (16) to rotate in three angular directions.

2. The device (10) according to claim 1, Features The plurality of adjustable scraper modules (7) include 2 to 10 adjustable scraper modules (7), each of the plurality of adjustable scraper modules (7) further includes three linear actuators (12) connected to the blade (16), wherein: The three linear actuators (12) are connected to the electric actuator and supported by a housing (13).

3. The device (10) according to claim 1 or 2, Features The blade (16) of each adjustable scraper module (7) among the plurality of adjustable scraper modules (7) is connected to a cutter head (15), wherein the cutter head (15) is connected to a turntable (14) in a pivotable manner.

4. The device (10) according to claim 3, characterized in that The connection between the blade (16) and the cutter head (15) is achieved through a quick locking mechanism, which consists of a male and a female wedge-shaped joint.

5. The device (10) according to claim 4, Features The quick locking mechanism is composed of a wedge-shaped conical groove (30) arranged on the cutter head (15) and a boss corresponding to the conical groove (30) arranged on the blade (16) to form the male and female joint, and the quick locking mechanism also includes a side hook (31) arranged on the blade (16) and corresponding to the side boss (32) on the cutter head (15).

6. The device (10) according to claim 5, Features The side hook (31) is provided with a spring mechanism (33) associated with a lifting ring (34) on the blade (16) so as to move the side hook (31) when the blade (16) is lifted by the lifting ring (34).

7. The device (10) according to any one of claims 1 to 2, Features The device further comprises a frame (5) connectable to the granulation disk (3), wherein the frame (5) is used to mount a plurality of adjustable scraper modules (7).

8. The device (10) according to claim 7, Features The housing (13) of the adjustable scraper module (7) comprises an inclined bottom side wall (13'), the angle of which corresponds to the angle of the frame (5) so that the adjustable scraper module (7) can be embedded and installed on the frame (5).

9. The device (10) according to claim 8, Features The housing (13) includes a side lock (13") with a spring pin, which is configured to be embedded in a hanging ear (5') on the frame (5) and fix between these components.

10. The device (10) according to any one of claims 1 to 3, Features The device further comprises a discharge ramp (4), wherein: The discharge ramp (4) comprises at least one electric vibrator (8).

11. The device (10) according to any one of claims 1 to 3, Features The granulation disk (3) includes a bottom wall covered with a plurality of polymer microsphere plates (6).

12. The device (10) according to claim 11, Features The polymer microsphere plate (6) is composed of hollow polymer microspheres manufactured by an additive manufacturing process, and is formed by connecting convex and concave inserts and steel rods.

13. The device (10) according to any one of claims 1 to 3, Features The device further comprises a deflector element (9) comprising a frame (18) connected to a deflector plate (19) which is longitudinally adjustable by an independent adjustment mechanism (26) driven by the linear actuator (12).

14. The device (10) according to claim 13, Features The deflector element (9) further comprises an angle actuator (12') associated with the deflector plates (19) to adjust their angle, thereby allowing independent adjustment of each deflector plate (19).

15. The device (10) according to any one of claims 1 to 14, Features The linear actuator (12) and the angular actuator (12') include a communication module, through which the linear actuator and the angular actuator can be remotely actuated and controlled.

16. The device (10) according to any one of claims 1 to 3, Features The device also includes a drum screen (20), which includes a plurality of drums (22).

17. The device (10) according to claim 16, Features , the roller (22) is connected to the roller bearing (23), wherein, A roller spacing adjustment element (25) is connected between the roller bearings (23).

18. The device (10) according to claim 17, Features The drum bearing (23) is fixed to the upper part of the drum screen (20) through a lower fixing rod.

19. The device (10) according to any one of claims 1 to 17, Features The device also includes a maintenance platform (28) adjacent to the drum screen (20).

20. The device (10) according to any one of claims 1 to 18, Features , the device also includes a sensor (35) connected to the scraper (17).

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