Accumulated material cleaning device for material sliding plate of disc pelletizer

Abstract

The invention discloses an accumulated material cleaning device for a material sliding plate of a disc pelletizer. The accumulated material cleaning device comprises a first movement mechanism, a second movement mechanism and a scraper assembly, the first movement mechanism comprises a first gear motor, a first output shaft is connected with a rotary encoder, and a second output shaft is fixed to one end of the large arm assembly so as to drive the large arm assembly to swing back and forth in the horizontal direction. The second movement mechanism comprises a second gear motor, a laser range finder is arranged on the top side of the second gear motor, a first gear is arranged at the shaft end of an output shaft of the second gear, and the first gear, a second gear arranged at the other end of the large arm assembly and a chain arranged outside the second gear and the second gear in a sleeving mode form a chain transmission mechanism. A sliding frame fixedly connected with the chain sleeves the outer side of the big arm assembly, and a laser ranging reflector is arranged at the top of the big arm assembly; the scraper assembly comprises a scraper with a vertically-downward tool bit, and the scraper is fixed to the bottom of the sliding frame. The sliding plate abuts against the plate face of the sliding plate. The device effectively replaces the work of manually cleaning the material sliding plate by using an iron shovel, reduces the working intensity of production workers, improves the qualified rate of green pellets, and improves the production efficiency.

Description

Technical Field

[0001] This invention relates to the field of pellet production control technology, and in particular to a material accumulation cleaning device for the feed plate of a disc pelletizer. Background Technology

[0002] The disc pelletizer is a crucial piece of equipment for manufacturing green pellets. Its working principle is as follows: Material fed into the disc pelletizer, after the addition of appropriate moisture, continuously rolls within an inclined, rotating pelletizing disc to form pellets. Larger pellets, lacking sufficient lift, roll out of the disc pelletizer and fall onto a chute, then roll along the chute into a conveyor belt for transport to the next production stage. Because the initially formed pellets are moist and possess kinetic energy upon landing on the chute, some material adheres to the chute. Over time, this accumulation causes large-area material buildup on the chute, hindering pellet discharge and weakening pellet strength, necessitating timely cleaning.

[0003] Currently, to address the issue of material accumulation on the chute, on-site workers mostly rely on periodic cleaning with hand shovels. However, this method is limited by the intensity of manual labor, resulting in low efficiency and impacting the yield of green pellets. If cleaning is not timely, the rate of moisture evaporation from the accumulated material increases. Furthermore, the location of the chute makes cleaning difficult, and workers are susceptible to injury from the recoil of the shovel, posing a safety risk. Therefore, it is necessary to design an automated material accumulation cleaning device for the disc pelletizing machine chute that can automatically clean the chute without affecting its operational status. Summary of the Invention

[0004] The purpose of this invention is to provide a material accumulation cleaning device for the feed plate of a disc pelletizer that solves the above-mentioned technical problems.

[0005] Therefore, the technical solution of the present invention is as follows:

[0006] A material accumulation cleaning device for a disc pelletizing machine's chute, characterized in that it comprises a first motion mechanism, a second motion mechanism, and a scraper assembly; wherein,

[0007] The first motion mechanism includes a first motion drive mechanism and a boom assembly; the first motion drive mechanism includes a first geared motor; the first output shaft of the first geared motor is connected to a rotary encoder, and its second output shaft is vertically upward; the boom assembly includes a horizontally arranged long arm, one end of which is fixedly connected to the shaft end of the second output shaft of the first geared motor.

[0008] The second motion mechanism includes a second motion drive mechanism, a chain assembly, and a slider assembly. The second motion drive mechanism includes a second geared motor, whose output shaft is horizontally arranged and perpendicular to the second output shaft of the first geared motor. A laser rangefinder is mounted on the top side of the second geared motor, and a first gear is provided at the end of its output shaft. The chain assembly includes a chain and a second gear. The second gear is rotatably mounted at the other end of the long arm, and the chain is sleeved on the outside of the first and second gears to form a chain drive mechanism. The slider assembly includes a sliding frame that is slidably sleeved on the outside of the long arm, which is fixedly connected to the chain, and a laser rangefinder reflector that cooperates with the laser rangefinder is provided on the top.

[0009] The scraper assembly includes a scraper, which is arranged with the scraper head facing vertically downward and is fixed to the bottom of the sliding frame by a scraper connecting rod; the blade of the scraper is set in a direction parallel to the axis of the long arm.

[0010] Furthermore, the sliding frame is symmetrically mounted on the outside of the long arm. At least two top side support wheels, at least two left side support wheels, and at least two right side support wheels are respectively provided at intervals on the top plate, left side plate, and right side plate of the sliding frame. Each support wheel is arranged such that its wheel surface is perpendicular to the adjacent side wall of the long arm, so that the sliding frame can slide back and forth on the long arm.

[0011] Furthermore, the second motion mechanism also includes a caster assembly; the caster assembly includes an adjustable-length connecting rod, the top of which is fixed to the bottom of the other end of the long arm, and the bottom of which is connected to a traveling wheel, the axis of which is parallel to the axis of the long arm.

[0012] Furthermore, the connecting rod consists of a first connecting rod and a second connecting rod. The second connecting rod is sleeved on the outside of the first connecting rod. Both rods have multiple through holes at equal intervals, so that the length of the connecting rod can be adjusted and the length can be fixed by long bolts that are inserted and fixed on the two connecting rods.

[0013] Furthermore, a first limit switch group is installed between the first motion drive mechanism and the boom assembly; the first limit switch group includes a first motion axis origin limit switch, a first motion axis left limit switch and a first motion axis right limit switch, which are arranged at a central interval at one end of the top side of the first geared motor and facing the disc ballering machine; the first limit switch group also includes a first limit sensing block fixed on the long arm, whose setting position is such that during the swing of the long arm from the installation position to the disc ballering machine, it is positioned relative to the three limit switches in turn at the standby position, one boundary of the cleaning area and the other boundary of the cleaning area and emits sensing signals respectively.

[0014] Furthermore, a left safety switch and a right safety switch for the first motion shaft are provided at the other end of the top side of the first geared motor. The two switches are respectively located outside the origin limit switch of the first motion shaft and outside the right limit switch of the first motion shaft, so as to issue a collision signal when the long arm swings to the edge of the chute plate.

[0015] Furthermore, a second limit switch group is installed between the sliding assembly and the boom assembly; the second limit switch group includes a proximal limit switch and a distal limit switch, which are respectively located on both ends of the long boom, so as to issue a collision signal when the sliding frame moves to collide with the proximal limit switch or the distal limit switch.

[0016] Furthermore, a safety contact edge is affixed circumferentially to the lower outer wall of the sliding frame to issue a collision signal when the sliding frame moves to contact other structures.

[0017] Compared with existing technologies, this disc pelletizing machine's chute cleaning device effectively replaces the manual work of cleaning the chute with an iron shovel, reducing the workload of production workers. Moreover, the cleaning effect is more real-time than manual operation, which helps to improve the pass rate of raw pellets and increase production efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram showing the installation position of the material accumulation cleaning device on the chute of the disc pelletizer in an embodiment of the present invention;

[0019] Figure 2 This is a side view of the material accumulation cleaning device for the disc pelletizer chute in an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the material accumulation cleaning device for the disc pelletizer chute in an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the first motion drive mechanism of the material accumulation cleaning device for the disc baller's chute in an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the first and second motion drive mechanisms of the material accumulation cleaning device for the disc baller's chute in an embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the sliding component of the material accumulation cleaning device for the disc pelletizer in an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the caster assembly of the material accumulation cleaning device for the disc baller's chute in an embodiment of the present invention;

[0025] Figure 8This is a schematic diagram of the scraper assembly of the material cleaning device for the disc baller's chute in an embodiment of the present invention. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but the following embodiments are by no means intended to limit the present invention.

[0027] See Figure 1 During the pelletizing process using the disc pelletizer 8, the pelletizing disc rotates, and the particle size of the pellets gradually increases to form pellets. When the pellet size reaches a certain size, it rolls out of the pelletizing disc and falls onto the chute 9. Because the initially formed pellets are moist and have a certain kinetic energy when they fall onto the chute 9, some material sticks to the chute 9 and accumulates over time, causing a large area of ​​material accumulation on the chute 9, which needs to be cleaned in time. Based on this, the disc pelletizer chute accumulation cleaning device of the present invention aims to clean the chute 9 so as not to affect the normal production and discharge of raw pellets in the disc pelletizer when the machine is stopped. The disc pelletizer chute accumulation cleaning device is set in the empty area 10 on the side of the chute 9 away from the disc pelletizer 8.

[0028] See Figures 2-8 The material accumulation cleaning device for the disc ballering machine includes a first motion mechanism and a second motion mechanism. The first motion mechanism reciprocates between its installation position and the side of the disc ballering machine 8 adjacent to the chute 9. The second motion mechanism is located at the bottom of the first motion mechanism and has a scraper at its bottom. It can reciprocate on the first motion mechanism to control the scraper to move to any position on the chute 9 for cleaning operations.

[0029] The first motion mechanism consists of a first motion drive mechanism 1 and a boom assembly 3. The first motion drive mechanism 1 includes a first geared motor 1-1, which is specifically a right-angle geared motor. The first output shaft and the second output shaft of the first geared motor 1-1 are respectively arranged vertically downward and vertically upward. The first output shaft is connected to a rotary encoder 1-3 to control the swing amplitude of the boom assembly 3 by real-time acquisition of the number of rotations of the first output shaft. The second output shaft is connected to the end of the boom assembly 3 to drive the boom assembly 3 to swing back and forth in the horizontal direction.

[0030] In this embodiment, the rotating shaft of the rotary encoder 1-3 is fixedly connected to the first output shaft via a coupling, and its housing is fixed to the housing of the first geared motor 1-1 via the encoder bracket 1-4. The first geared motor 1-1 is connected to the platform bracket of the disc ball-making machine 8 via the first bracket 1-2. The first bracket 1-2 is an inverted L-shaped frame, specifically composed of a first horizontal plate and a first vertical plate that are vertically fixedly connected. The first vertical plate is fixedly connected to the platform bracket, and the first horizontal plate is fixedly connected to the motor flange on the top side of the first geared motor 1-1. The second output shaft end of the first geared motor 1-1 passes through a through hole opened at the center of the first horizontal plate to the top of the first horizontal plate to connect with the boom assembly 3, thereby realizing the driving motion of the boom assembly 3.

[0031] The boom assembly 3 includes a horizontally arranged long boom 3-1, one end of which is fixedly connected to the second output shaft of the first geared motor, so as to be driven by the first geared motor 1-1 to perform reciprocating swinging motion.

[0032] In this embodiment, the long arm 3-1 is an I-beam with end plates fixed at both ends, and a connecting flange 3-5 is provided on the bottom surface of the long arm 3-1. It is arranged opposite to the connecting flange provided at the end of the second output shaft of the first reduction motor 1-1. By connecting and fixing the two connecting flanges together, the second output shaft is fixedly connected to one end of the long arm 3-1.

[0033] The second motion mechanism includes a second motion drive mechanism 2, a chain assembly 4, and a slider assembly 5.

[0034] The second motion drive mechanism 2 is located adjacent to the first motion drive mechanism 1, and includes a second reduction motor 2-1 and a first gear 4-2. The second reduction motor 2-1 is fixed to the end of the long arm 3-1, and its output shaft is horizontally arranged on the end of the long arm 3-1 and is perpendicular to the second output shaft of the first reduction motor 1-1. The first gear 4-2 is sleeved and fixed to the end of the output shaft of the second reduction motor 2-1 so as to drive the rotation through the second reduction motor 2-1.

[0035] In this embodiment, the second geared motor 2-1 is fixed to one side of the long arm 3-1 by the second bracket 2-2. Specifically, the second bracket 2-2 is a C-shaped frame, which is composed of an upper horizontal plate, a second vertical plate and a lower horizontal plate connected vertically in sequence and fixed to the end plate of the adjacent end of the long arm 3-1. The motor flange of the second geared motor 2-1 is fixed to the outer side of the second vertical plate, and its output shaft passes through the through hole opened at the center of the second vertical plate to the other side of the second vertical plate.

[0036] A laser rangefinder 2-3 is also installed on the top side of the second geared motor 2-1. It is specifically fixed on the upper horizontal plate of the second bracket 2-2, with the measuring end facing the other end of the long arm 3-1, and its measuring laser beam is kept parallel to the long arm 3-1.

[0037] The chain assembly 4 includes a chain 4-1 and a second gear 4-2; the second gear 4-2 is rotatably mounted at the other end of the long arm, and the chain is sleeved on the outside of the first gear 4-2 and the second gear 4-2, so that the three form a chain drive mechanism.

[0038] In this embodiment, a third support 4-3 is provided at the other end of the long arm 3-1. The third support 4-3 is a C-shaped frame, which is composed of an upper horizontal plate, a third vertical plate and a lower horizontal plate that are vertically fixedly connected in sequence and fixed to the adjacent end plate. A bearing seat 4-4 with a rotating bearing inside is installed on the third vertical plate. A gear shaft is inserted and fixed in the center hole of the rotating bearing. The second gear 4-2 is sleeved and fixed to the other end of the gear shaft so that it can rotate freely. The first gear 2-4 and the second gear 4-2 are the same size and are set in a way that they are at the same height and coplanar. Correspondingly, a strip-shaped through hole is opened longitudinally on the end plate at both ends of the long arm 3-1 so that the two ends of the chain 4-1 pass through two strip-shaped through holes respectively and are sleeved on the outside of the first gear 2-4 and the second gear 4-2 to form a chain drive mechanism.

[0039] In practical applications, the first gear 2-4 serves as the driving gear, driven to rotate by the second reduction motor 2-1, while the second gear 4-2 is the driven gear. The two gears work together to drive the chain 4-1 to rotate reciprocally.

[0040] The sliding assembly 5 is slidably mounted on the long arm 3-1 to reciprocate along the length of the long arm 3-1. Specifically, the sliding assembly 5 includes a sliding frame 5-1, which is sleeved on the outside of the long arm 3-1 and arranged symmetrically on both sides. Two top side support wheels 5-4, two left side support wheels 5-2, and two right side support wheels are respectively spaced apart on the top plate, left side plate, and right side plate of the sliding frame 5-1. Each support wheel is arranged such that its wheel surface abuts perpendicularly against the adjacent side wall of the long arm 3-1 to provide stable support between the sliding frame 5-1 and the long arm 3-1. At the same time, the sliding frame 5-1 can slide back and forth on the long arm 3-1; two chain buckles 5-3 are provided on each of the two ends of the top of the sliding frame 5-1 to fix the sliding frame 5-1 to the chain 4-1 through the two chain buckles 5-3, so that the sliding frame 5-1 can move back and forth on the long arm 3-1 with the chain 4-1; a laser rangefinder reflector 5-5 is vertically fixed on the top surface of the sliding frame 5-1, and its surface is set opposite to the laser rangefinder 2-3, so that the laser rangefinder 2-3 can use the laser rangefinder reflector 5-5 to collect the displacement changes of the sliding component 5.

[0041] As another preferred technical solution of this embodiment, in order to further control the swing amplitude of the long arm 3-1, a first limit switch group is installed between the first motion drive mechanism 1 and the large arm assembly 3. Specifically, the first limit switch group includes a first motion axis origin limit switch 1-7, a first motion axis left limit switch 1-6, and a first motion axis right limit switch 1-5. The three are arranged in a centrally spaced manner from the installation position of the long arm 3-1 to the disc ball-forming machine 8 at one end of the top side of the first reduction motor 1-1 (that is, one end of the top surface of the first horizontal plate). The first limit switch group also includes a first limit sensing block 3-4 fixed on the long arm 3-1. Its setting position is adapted to the above three limit switches so that when the long arm 3-1 swings from the installation position to the disc ball-forming machine 8, the first limit sensing block 3-4 can sequentially be aligned with the three limit switches and emit a sensing signal.

[0042] Specifically, in combination Figure 1 As shown, when the first limit sensor block 3-4 is aligned with the first motion axis origin limit switch 1-7, the long arm 3-1 is in the standby position; when the first limit sensor block 3-4 is aligned with the first motion axis left limit switch 1-6, the long arm 3-1 is located at one side boundary of the cleaning area on the chute 9, that is, it begins to enter the cleaning area; when the first limit sensor block 3-4 is aligned with the first motion axis right limit switch 1-5, the long arm 3-1 is located at the other side boundary of the cleaning area on the chute 9 and is adjacent to the disc baller.

[0043] In this embodiment, each limit switch specifically adopts a slot-type photoelectric sensor. That is, when the boom assembly 3 moves above any limit switch, the photoelectric switch is triggered and the electrical signal is closed.

[0044] Furthermore, considering the small size of the chute 9, its entire surface needs cleaning. Therefore, the initial standby position of the long arm 3-1, which is also the inner edge of the chute, is such that the positions of the left limit switch 1-6 and the origin limit switch 1-7 of the first motion axis are basically coincident. When the long arm 3-1 begins to swing, the left limit switch 1-6 of the first motion axis aligns with the first limit sensing block 3-4 and sends a sensing signal. The right limit switch 1-5 of the first motion axis is set on the inner edge of the chute near the disc pelletizer 8 so that when the long arm 3-1 is about to contact the disc pelletizer 8, the right limit switch 1-5 of the first motion axis aligns with the first limit sensing block 3-4 and sends a sensing signal. In other embodiments, when the size of the chute 9 is larger, only a portion of the chute 9 needs cleaning due to the passage of pellets. In this case, the positions of the left limit switch 1-6 and the origin limit switch 1-7 of the first motion axis are more spaced apart.

[0045] As another preferred technical solution in this embodiment, a first motion axis left safety switch 1-8 and a first motion axis right safety switch 1-9 are also provided on the top side of the first reduction motor 1-1 (that is, on the other end of the top surface of the first horizontal plate). These two switches are respectively located outside the first motion axis origin limit switch and outside the first motion axis right limit switch 1-5, to safely limit the swing amplitude of the long arm 3-1. Specifically, during the swing of the long arm 3-1 towards its installation position, the induction signal emitted by the first motion axis origin limit switch 1-7 should be triggered first, followed by the collision signal emitted by the first motion axis left safety switch 1-8; similarly, during the swing of the long arm 3-1 towards the disc ball-making machine 8, the induction signal emitted by the first motion axis right limit switch 1-5 should be triggered first, followed by the collision signal emitted by the first motion axis right safety switch 1-9.

[0046] In this embodiment, both the left safety switch 1-8 and the right safety switch 1-9 of the first motion axis are collision switches, which emit a collision signal through collision contact, thereby controlling the first reduction motor 1-1 to cut off power and stop movement, so as to avoid the long arm 3-1 swinging too much and bumping into the on-site facilities.

[0047] As a preferred technical solution of this embodiment, in order to prevent the sliding frame 5-1 from moving beyond the set range on the long arm, a second limit switch group is installed between the sliding component 5 and the large arm component 3. Specifically, the second limit switch group includes a near-end limit switch 3-2 and a far-end limit switch 3-3, which are respectively set on both ends of the long arm 3-1 to limit the movement limit position of the sliding frame 5-1 at both ends of the long arm 3-1. Specifically, the near-end limit switch 3-2 is set on the long arm 3-1 adjacent to the first reduction motor 1-1 to issue a collision signal when the sliding frame 5-1 moves to collide with the near-end limit switch 3-2; the far-end limit switch 3-3 is set on the long arm 3-1 adjacent to the second gear 4-2 to issue a collision signal when the sliding frame 5-1 moves to the far-end limit switch 3-3, and reversely control the second reduction motor 2-1 to cut off the power to stop the movement, so as to avoid the sliding frame 5-1 moving too far and colliding with other mechanisms of the disc baller's chute material cleaning device. In this embodiment, the near-end limit switch 3-2 and the far-end limit switch 3-3 are specifically ball-bearing rocker arm type limit switches.

[0048] As a preferred technical solution of this embodiment, a safety contact edge 5-6 is attached circumferentially on the lower outer wall of the sliding frame 5-1. It serves as a pressure-sensitive sensor. When the sliding frame 5-1 moves to contact other structures, the safety contact edge 5-6 emits a collision signal due to pressure changes, which in turn controls the second reduction motor 2-1 to cut off power and stop the movement. This prevents the sliding frame 5-1 from moving too far and colliding with other mechanisms of the material accumulation cleaning device of the disc ballering machine's chute.

[0049] The material accumulation cleaning device of the disc baller also includes a caster assembly 6, which specifically includes an adjustable-length connecting rod. Its top end is located at the bottom of the other end of the long arm, and its bottom end is connected to a traveling wheel 6-3. The axis of the traveling wheel is parallel to the axis of the long arm, so that when the long arm 3-1 swings, its other end can be kept horizontal by the traveling wheel 6-3 supported at its bottom. At the same time, the traveling wheel 6-3 moves on the chute 9 with the swinging motion.

[0050] In this embodiment, the connecting rod consists of a first connecting rod 6-1 and a second connecting rod 6-2. A flange is welded to the top end of the first connecting rod 6-1, which is then fixedly connected to the third horizontal plate of the second gear bracket 4-3 by bolts. The second connecting rod 6-2 is sleeved on the outside of the first connecting rod 6-1. Multiple through holes are evenly spaced on both rods, allowing the length of the connecting rod to be adjusted. The length is fixed by long bolts that pass through and fix the first connecting rod 6-1 and the second connecting rod 6-2. The traveling wheel 6-3 is fixed to the bottom end of the second connecting rod 6-4 by a wheel frame.

[0051] See Figure 8 The material cleaning device for the disc baller also includes a scraper assembly 7, which specifically includes a scraper 7-1, which is set with the blade facing vertically downward and is fixed to the bottom surface of the sliding frame 5-1 by a vertically set scraper connecting rod 7-2; wherein, the scraper 7-1 is set in the same direction as the traveling wheel 6-3, and its blade abuts against the chute 9.

[0052] In this embodiment, a flange is welded and fixed to the top of the scraper connecting rod 7-2, and it is fixed to the sliding frame 5-1 by bolts passing through the flange; the bottom end of the scraper connecting rod 7-2 is connected to the scraper 7-1 by bolts; the distance between the scraper connecting rod 7-2 and the long arm 3-1 and the chute 9 is adapted to ensure that the scraper 7-1 abuts against the surface of the chute 9.

[0053] In practical applications, when the scraper 7-1 swings to the cleaning area with the long arm 3-1, its blade just cuts the material accumulated on the chute 9, cutting off the sticky material; then, as the scraper 7-1 moves with the sliding frame 5-1, it performs a partial scraping action on the material that has been cut into multiple pieces; the two actions work together to effectively scrape off the material accumulated on the chute 9.

[0054] In practical applications, the first geared motor 1-1, rotary encoder 1-3, second geared motor 2-1, laser rangefinder 2-9, first motion axis origin limit switch 1-7, first motion axis left limit switch 1-6, first motion axis right limit switch 1-5, first motion axis left safety switch 1-8, first motion axis right safety switch 1-9, near-end limit switch 3-2, far-end limit switch 3-3, and safety contact edge 5-6 of the material cleaning device for the disc ball forming machine are all connected to a control device to realize the cleaning process; wherein, the control device can be, but is not limited to, a PLC.

[0055] The working principle of the material accumulation cleaning device for the disc pelletizing machine's chute is described below.

[0056] The long arm 3-1 swings under the drive of the first reduction motor 1-1. During the swing, the traveling wheels 6-3 of the caster assembly 6 slide and support the material conveyor 9, providing support. The different states of the swing stroke are monitored by the first motion axis origin limit switch 1-7, the first motion axis left limit switch 1-6, the first motion axis right limit switch 1-5, and the first motion axis left safety switch 1-8. The extreme positions of the swing stroke are limited by the first motion axis right limit switch 1-5 and the first motion axis left limit switch 1-6. Each time a designated cleaning area is cleaned, the reciprocating swing motion of the designated cleaning area is controlled by measuring the swing angle through the rotary encoder 1-3.

[0057] At the same time, the second reduction motor 2-1 drives the first gear 2-4 to rotate, so as to drive the sliding frame 5-1 to reciprocate on the long arm 3-1 through the chain transmission mechanism; wherein, the extreme position of the reciprocating movement of the sliding frame 5-1 is limited by the near end limit switch 3-2 and the far end limit switch 3-3; each time the designated cleaning area is cleaned, the radial movement conversion control within the designated cleaning area is realized by measuring the displacement change of the laser rangefinder 2-9 relative to the laser rangefinder reflector 5-5.

[0058] In actual operation, each movement of the material accumulation cleaning device on the chute 9 of the disc pelletizing machine drives the scraper assembly 7 to scrape off the accumulated material on the chute 9. Since only the scraper 7-1 partially contacts the chute 9, and according to the actual operation on site, the scraper 7-1 has little impact on the pellet feeding process and can be ignored. Therefore, it is not necessary to stop the disc pelletizing machine 8 when cleaning the chute 9.

Claims

1. A device for cleaning the material accumulated on the feed table of a disc pelletizer, characterized in that, The first motion mechanism, the second motion mechanism and the scraper assembly are included. The first motion mechanism includes a first motion driving mechanism and a large arm assembly; the first motion driving mechanism includes a first speed reducer motor; a rotary encoder is connected to the first output shaft of the first speed reducer motor, and the second output shaft is vertically upward; the large arm assembly includes a horizontally arranged long arm, one end of which is fixedly connected to the second output shaft of the first speed reducer motor. The second motion mechanism includes a second motion driving mechanism, a chain assembly and a sliding block assembly; the second motion driving mechanism includes a second speed reducer motor, the output shaft of which is horizontally arranged and perpendicular to the second output shaft of the first speed reducer motor, and a laser range finder is arranged on the top side of the second speed reducer motor, and the output shaft end of the second speed reducer motor is provided with a first gear; the chain assembly includes a chain and a second gear; the second gear is rotatably arranged at the other end of the long arm, and the chain is sleeved outside the first gear and the second gear to form a chain transmission mechanism; the sliding block assembly includes a sliding frame which is slidably sleeved outside the long arm and is fixedly connected with the chain, and the top of the sliding frame is provided with a laser ranging reflector which cooperates with the laser ranging finder. The scraper assembly includes a scraper which is arranged with the scraper head vertically downward and is fixed to the bottom of the sliding frame through a scraper connecting rod; the setting direction of the blade of the scraper is parallel to the axis direction of the long arm.

2. The pan cake balling machine apron build-up cleaning device of claim 1 wherein, The sliding frame is symmetrically sleeved outside the long arm, and at least two top side support wheels, at least two left side support wheels and at least two right side support wheels are respectively and freely rotatably arranged on the top plate, the left side plate and the right side plate of the sliding frame, each support wheel is arranged with its wheel surface vertically abutting the adjacent side wall surface of the long arm, so that the sliding frame can reciprocally slide on the long arm.

3. The pan cake balling machine apron build-up cleaning device of claim 1 wherein, The second motion mechanism further includes a caster assembly; the caster assembly includes a length-adjustable connecting rod, the top end of which is fixed to the bottom of the other end of the long arm, and the bottom end of which is connected with a walking wheel, the axis direction of the walking wheel is parallel to the axis direction of the long arm.

4. A device for cleaning the build-up of material from the apron of a disc balling machine according to claim 3, characterised in that, The connecting rod is composed of a first connecting rod and a second connecting rod, the second connecting rod is sleeved outside the first connecting rod, a plurality of through holes are respectively and equally spaced on the rod bodies of the two connecting rods, so that the length of the connecting rod can be adjusted, and the length is fixed by a long bolt fixed on the two connecting rods.

5. The pan cake balling machine apron build-up cleaning device of claim 1 wherein, A first limit switch set is installed between the first motion driving mechanism and the large arm assembly; the first limit switch set includes a first motion axis origin limit switch, a first motion axis left limit switch and a first motion axis right limit switch, which are centrally and spacedly arranged at one end of the top side of the first speed reducer motor and towards the direction of the disc ball making machine; the first limit switch set further includes a first limit sensing block fixed on the long arm, which is arranged at a position capable of sequentially being opposite to the three limit switches at standby position, one side boundary of the cleaning area and the other side boundary of the cleaning area respectively and sending sensing signals in the process of swinging the long arm from the installation position to the disc ball making machine.

6. The pan cake balling machine apron build-up cleaning device of claim 1 wherein, A first motion axis left safety switch and a first motion axis right safety switch are further arranged at the other end of the top side of the first speed reducer motor, which are respectively arranged at positions outside the first motion axis origin limit switch and outside the first motion axis right limit switch, so as to send a collision signal when the long arm swings to the positions about to collide with the two side edges of the material sliding plate.

7. The pan cake balling machine apron build-up cleaning device of claim 1 wherein, A second limit switch set is installed between the sliding assembly and the large arm assembly; the second limit switch set includes a proximal limit switch and a distal limit switch, which are respectively arranged at the two ends of the long arm, so as to send a collision signal when the sliding frame moves to collide with the proximal limit switch or the distal limit switch.

8. The pan cake balling machine apron build-up cleaning device of claim 1 wherein, A safety touch edge is attached to the lower side outer wall of the sliding frame in a circumferential direction, so as to send a collision signal when the sliding frame moves to contact other structures.

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