Bulk material handling system and chute cleaning apparatus therefor

Abstract

The application discloses a bulk material conveying system and a chute cleaning device thereof, and belongs to the technical field of bulk material transportation. The chute cleaning device is installed on a Y-shaped chute, and the lower end of the Y-shaped three-way pipe of the Y-shaped chute is arranged to discharge materials, and the upper end of the Y-shaped three-way pipe is respectively connected with material receiving hoppers on the two sides. The cleaning device comprises a variable-diameter motor, a material scraping motor and a scraper, the scraper is arranged on the inclined wall of the material receiving hopper and can swing in a clock pendulum mode in a fan-shaped area; the output shaft of the variable-diameter motor penetrates the center of the output shaft of the material scraping motor and drives the scraper to slide along the length direction adaptively. The upper and lower groups of cleaning devices are partially overlapped, effectively eliminating the cleaning blind area and realizing full-area dead-angle-free cleaning of the inner wall of the hopper. The system adopts a hopper cooperating with a side pushing mechanism to automatically complete the inclined discharging, and manual cleaning is not needed, thereby reducing material throwing loss. The conveying, discharging, cleaning and resetting are integrated and automatically linked, thereby reducing labor cost and operation risk, reducing downtime, and significantly improving the port throughput capacity and comprehensive economic benefits.

Description

Technical Field

[0001] This invention belongs to the field of bulk material transportation technology, specifically relating to a bulk material transportation system and its chute cleaning device. Background Technology

[0002] In the transportation of bulk materials such as coal, ore, and grain, ports and bulk cargo terminals widely use belt conveyors in conjunction with chutes to complete material transfer. Y-shaped chutes have become a key component for improving conveying capacity because they can achieve double-sided feeding and centralized discharge.

[0003] However, existing bulk materials exhibit significant differences in moisture and viscosity, making them highly susceptible to adhesion and accumulation on the inner wall of the Y-shaped chute receiving cone. Long-term accumulation reduces the chute's flow cross-section, leading to blockages, spillage, and even system shutdowns. Traditional cleaning methods rely on manual entry into confined spaces or high-altitude operations, resulting in high labor intensity, safety risks, and the inability to perform online cleaning. Methods such as vibratory motors and high-pressure water washing suffer from poor cleaning effectiveness, damage to the chute's base plate, environmental pollution, and high maintenance costs, while also lacking adaptive adjustment capabilities to adapt to different operating conditions. Furthermore, existing conveying, unloading, and cleaning processes are independent, lacking integrated design and unable to achieve simultaneous unloading and self-cleaning operations. Equipment largely relies on manual operation and monitoring, failing to dynamically adjust operating parameters based on material conditions and workload, leading to high labor costs and poor operational continuity, making it difficult to meet the requirements of green and smart port construction. Summary of the Invention

[0004] To address the aforementioned problems in the existing technology, this solution provides a bulk material conveying system and its chute cleaning device.

[0005] The technical solution adopted in this invention is as follows: A chute cleaning device for a bulk material conveying system is installed on a Y-shaped chute. The Y-shaped chute includes a receiving cone and a Y-shaped tee; the lower outlet of the Y-shaped tee is used to discharge bulk material, and the two upper inlets of the Y-shaped tee are respectively connected to a receiving cone. The chute cleaning device includes a variable diameter motor, a scraper motor, and a scraper. The scraper is mounted on the inclined wall of the receiving cone and can swing in a pendulum-like manner in a fan-shaped area to sweep bulk material into a Y-shaped tee. The scraper motor is mounted on the side wall of the receiving cone, and its output shaft is connected to the scraper for transmission and is used to control the swing. The output shaft of the variable diameter motor passes through the center of the output shaft of the scraper motor and is used to control the scraper to slide along its length.

[0006] Optional: The two receiving cones are each equipped with an upper and lower chute cleaning device, and the scraper swing areas of the upper and lower chute cleaning devices partially overlap.

[0007] Optionally: The output shaft of the scraper motor is connected to a T-shaped slider, and the handle end of the scraper is provided with a T-shaped groove, which is parallel to the length direction of the scraper; the T-shaped slider is slidably disposed in the T-shaped groove, and when the T-shaped slider slides along the scraper, it can change the swing center of the scraper.

[0008] Optionally: A long strip cavity is provided at the bottom of the T-shaped slide groove, and the long strip cavity is perpendicular to the T-shaped slide groove; a push-pull rod is eccentrically connected to the output shaft of the variable diameter motor, and the push-pull rod is inserted into the T-shaped slide groove and can drive the scraper to slide along the T-shaped slider.

[0009] A bulk material conveying system includes: Two belt conveyors are mounted on the same support and parallel to each other; hoppers are installed on the conveyor belts of the belt conveyors. Y-shaped chutes are installed between the sides of the ends of two belt conveyors and are used to receive bulk materials from the hoppers. Chute cleaning device; The chute cleaning device is installed on the Y-shaped chute and is used to clean the bulk material in the Y-shaped chute; Two side-pushing mechanisms are respectively located at the ends of the two belt conveyors on the side away from each other, and are used to apply lateral thrust to the hopper to facilitate the discharge of bulk material from the hopper.

[0010] Optionally: The hopper includes a U-shaped outer frame, a sliding bar, and a movable bucket; the sliding bar is slidably disposed on the inner wall of the U-shaped outer frame; the movable bucket is disposed at the bottom of the U-shaped outer frame and is used to carry bulk materials; the unloading end of the movable bucket is connected to the sliding bar so that the movable bucket can extend out of the conveyor belt for unloading; the back end of the movable bucket is translated and lifted under the drive of the side pushing mechanism.

[0011] Optionally: A first side plate is provided at the opening of the U-shaped outer frame near the side push mechanism. The upper end of the first side plate is rotatably connected to the U-shaped outer frame, and the lower end is rotatably connected to the movable bucket. When the side push mechanism applies a lateral thrust to the first side plate, the first side plate is linked to the movable bucket. A second side plate is provided at the opening of the U-shaped outer frame near the Y-shaped chute. The upper end of the second side plate is rotatably connected to the U-shaped outer frame, and the middle part is connected to the first side plate through the first connecting rod. When the first side plate rotates, the second side plate is pushed to flip up through the first connecting rod.

[0012] Optionally: The inner side of the second side plate is connected to an inclined lever via a crossbar. When the lever flips outward with the second side plate, it can carry out the bulk material.

[0013] Optionally: A base is slidably connected below the U-shaped outer frame; magnets are provided at different positions of the U-shaped outer frame (21) and on the base (27), and the magnetic attraction is used to maintain the position of the U-shaped outer frame after sliding. The base is fixed on the conveyor belt, and a lock rod that can be raised and lowered is provided on the first side plate. A tension spring is connected between the lock rod and the first side plate; a bent lock tongue is provided at the lower end of the lock rod, and a T-shaped lock groove is provided on the base. The lock tongue can be hooked into the lock groove; the end of the lock groove has a notch, and the lock tongue can move out of the lock groove from the notch to unlock; a trapezoidal seat is provided at the upper end of the lock rod, and the side push mechanism cooperates with the inclined surface of the trapezoidal seat to drive the lock rod to move upward to unlock; a hanging ear with a hole is provided on the first side plate, and the side push mechanism can connect to the hanging ear and control the movement of the U-shaped outer frame or the first side plate.

[0014] Optional: The side-pushing mechanism includes a side-pushing bracket, the lower end of which is fixed to the belt conveyor and the upper end of which is equipped with a lateral electric push rod. The telescopic end of the lateral electric push rod is fixed with a hanging arm seat. A push hanging arm is rotatably connected to the hanging arm seat. The two push hanging arms are linked by a linkage gear and controlled to rotate by a hanging arm motor. The hook end of the push hanging arm can hook into the cavity of the hanging ear and cooperate with the inclined surface of the trapezoidal seat.

[0015] The beneficial effects of this invention are as follows: 1. The pendulum-type cleaning device in this solution has a scraper that can swing in a fan-shaped pendulum and slide adaptively in the length direction. Combined with the overlapping arrangement of the upper and lower cleaning devices, it eliminates cleaning blind spots and achieves full-area cleaning of the inner wall of the Y-shaped chute receiving cone without dead angles, which greatly improves the port's continuous operation capability.

[0016] 2. The system in this solution adopts a design that combines a hopper with a side-push mechanism to automatically unload bulk materials at an angle without the need for manual cleaning, reducing material spillage and loss. The system integrates conveying, unloading, cleaning, and resetting into a fully automatic linkage, eliminating the need for manual cleaning of the chute and hopper. This significantly reduces labor costs, minimizes the risks of working at heights and in confined spaces, greatly reduces downtime, and effectively improves port throughput capacity and economic benefits. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this scheme or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a schematic diagram of the bulk material conveying system in this scheme; Figure 2 This is a side view of the bulk material conveying system in this plan; Figure 3 This is a top view of the bulk material conveying system in this plan; Figure 4This is a schematic diagram of the Y-shaped chute structure; Figure 5 This is a cross-sectional view of the Y-shaped chute. Figure 6 It is a structural diagram showing the assembly of the variable diameter motor, scraper motor, and scraper. Figure 7 It is a structural diagram showing the cooperation between the scraper, the T-shaped slider, and the push-pull rod; Figure 8 This is a schematic diagram of the material hanging area of ​​the scraper; Figure 9 This is a side view of a belt conveyor; Figure 10 This is a diagram showing the state of the U-shaped outer frame being pushed out. Figure 11 This is a diagram showing the state of the active bucket being pushed out; Figure 12 This is a diagram showing the fit between the locking rod and the base; Figure 13 It is a diagram showing the working structure of the push arm and the linkage gear; Figure 14 This is a schematic diagram of the locking bar.

[0019] In the diagram: 1-Belt conveyor; 2-Hopper; 21-U-shaped outer frame; 22-First side plate; 221-Hanging lug; 23-Second side plate; 24-First connecting rod; 25-Pulley; 26-Moving bucket; 27-Base; 271-Locking groove; 28-Sliding bar; 29-Locking rod; 291-Locking tongue; 292-Trapezoidal seat; 293-Tension spring; 210-Magnet; 3-Y-shaped chute ; 31-Receiving cone hopper; 32-Y-shaped tee; 4-Chutter cleaning device; 41-Variable diameter motor; 42-Scraper motor; 43-Scraper; 44-T-shaped chute; 45-T-shaped slider; 46-Push-pull rod; 47-Long strip-shaped cavity; 5-Side push mechanism; 51-Side push bracket; 52-Side electric push rod; 53-Push hanging arm; 54-Hanging arm motor; 55-Linkage gear; 56-Hanging arm seat. Detailed Implementation

[0020] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are only a part of the embodiments, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this solution without creative effort are within the protection scope of this solution.

[0021] Example 1 like Figures 1 to 8As shown, this embodiment designs a chute cleaning device 4 for a bulk material conveying system. The chute cleaning device 4 is installed on the bottom of the Y-shaped chute 3 and close to the wall of the Y-shaped chute 3. It can directly clean the areas of high material accumulation in the chute, reducing the problems of material accumulation and adhesion in dead corners of the chute.

[0022] The Y-shaped chute 3 includes a receiving cone 31 and a Y-shaped tee 32; the lower outlet of the Y-shaped tee 32 is used to discharge bulk material, and the two upper inlets of the Y-shaped tee 32 are respectively connected to a receiving cone 31. This achieves dual-sided feeding and centralized discharge, improving the feeding throughput and conveying efficiency of bulk material.

[0023] The chute cleaning device 4 includes a variable-diameter motor 41, a scraper motor 42, and a scraper 43. The scraper 43 is mounted on the inclined wall of the receiving cone 31 and can swing pendulum-like in a fan-shaped area to sweep bulk material into the Y-shaped tee 32. The scraper motor 42 is mounted on the side wall of the receiving cone 31, and its output shaft is connected to the scraper 43 for transmission and to control the swing. The output shaft of the variable-diameter motor 41 passes through the center of the output shaft of the scraper motor 42 and is used to control the scraper to slide along its length. The coaxial nested arrangement is compact, occupies little space, and avoids interference between multiple mechanisms. It enables independent control of the cleaning action and cleaning radius, taking into account both conventional cleaning and adaptive variable-diameter cleaning needs.

[0024] Two receiving cone hoppers 31 are each equipped with an upper and lower chute cleaning device 4, and the swing areas of the scrapers 43 of the upper and lower chute cleaning devices 4 partially overlap. This eliminates the cleaning blind spots present in single-layer cleaning, achieving full-area cleaning without dead corners on the inner wall of the cone hopper, and significantly improving the cleaning coverage and cleaning effect.

[0025] The output shaft of the scraper motor 42 is connected to a T-shaped slider 45. The handle end of the scraper 43 is provided with a T-shaped groove 44, which is parallel to the length direction of the scraper 43. The T-shaped slider 45 is slidably disposed in the T-shaped groove 44. When the T-shaped slider 45 slides along the scraper 43, it can change the swing center of the scraper 43.

[0026] The bottom of the T-shaped groove 44 is provided with an elongated cavity 47, which is perpendicular to the T-shaped groove 44. A push-pull rod 46 is eccentrically connected to the output shaft of the variable diameter motor 41. The push-pull rod 46 is inserted into the T-shaped groove 44 and can drive the scraper 43 to slide along the T-shaped slider 45. The eccentric push-pull rod 46, in conjunction with the elongated cavity 47, can convert the rotational motion of the variable diameter motor 41 into the linear reciprocating sliding motion of the scraper 43, realizing the dynamic adjustment of the position of the scraper 43. The structure is simple and highly adaptable.

[0027] In this embodiment, the working process of the chute cleaning device 4 is as follows: 1. When the scraper motor 42 operates, it drives the T-shaped slider on the output shaft to rotate synchronously. The T-shaped slider is engaged in the T-shaped groove at the end of the scraper 43 handle, thereby driving the entire scraper 43 to swing in a pendulum-like fan-shaped motion around the T-shaped slider as the swing center on the inclined surface of the receiving cone 31. This sweeps the bulk material adhering to and accumulated on the inner wall of the cone into the Y-shaped tee below, completing the routine cleaning. At the same time, by partially overlapping the swing areas of the scrapers 43 of the upper and lower sets of chute cleaning devices 4, the entire area of ​​the receiving cone 31 can be cleaned.

[0028] 2. When the variable diameter motor 41 starts, its output shaft passes through the center hole of the output shaft of the scraper motor 42, enabling the variable diameter motor 41 to drive the eccentrically connected push-pull rod 46 to reciprocate. The push-pull rod 46 moves within the elongated groove cavity 47, thereby pulling or pushing the scraper 43 to slide along the length of the T-shaped slider. When the position of the scraper 43 changes, its own swing center shifts accordingly, and the cleaning radius and swing trajectory are adjusted synchronously to achieve variable diameter cleaning.

[0029] 3. When the two work together, the scraper motor 42 is responsible for the oscillating and sweeping of the scraper 43, and the variable diameter motor 41 dynamically adjusts the effective working stroke of the scraper 43. The two work together to complete the comprehensive and adaptive cleaning of the material accumulated in the receiving cone 31, so that the possible cleaning dead corners (M area) of the upper and lower chute cleaning devices 4 can be cleaned, and the area of ​​the fan-shaped cleaning is also larger, realizing the pendulum-type cleaning between the handle end of the scraper 43 and the receiving cone 31.

[0030] Example 2 like Figures 1 to 14 As shown, this embodiment designs a bulk material conveying system, including a belt conveyor 1, a Y-shaped chute 3, a side-pushing mechanism 5, and a chute cleaning device 4 as described in Embodiment 1, to realize fully automated operation of bulk material conveying, unloading, and cleaning, thereby improving overall operation efficiency.

[0031] Two belt conveyors 1 are mounted on the same support and are parallel to each other; hoppers 2 are installed on the conveyor belts of belt conveyors 1. The dual belts enable synchronous feeding from both sides, significantly improving the bulk material conveying capacity.

[0032] The hopper 2 includes a U-shaped outer frame 21, a sliding bar 28, and a movable bucket 26. The sliding bar 28 is slidably mounted on the inner wall of the U-shaped outer frame 21. The movable bucket 26 is located at the bottom of the U-shaped outer frame 21 and is used to carry bulk materials. The discharge end of the movable bucket 26 is connected to the sliding bar 28 so that the movable bucket 26 can extend beyond the conveyor belt for unloading. The back end of the movable bucket 26 is moved horizontally and lifted under the drive of the side pushing mechanism 5. The combined unloading action of bucket horizontal movement and lifting can achieve tilted unloading, more thorough material discharge, and effectively reduce material residue inside the hopper 2.

[0033] A first side plate 22 is provided at the opening of the U-shaped outer frame 21 near the side push mechanism 5. The upper end of the first side plate 22 is rotatably connected to the U-shaped outer frame 21, and the lower end is rotatably connected to the movable bucket 26. When the side push mechanism 5 applies a lateral thrust to the first side plate 22, the first side plate 22 is linked to the movable bucket 26.

[0034] A second side plate 23 is provided at the opening of the U-shaped outer frame 21 near the Y-shaped chute 3. The upper end of the second side plate 23 is rotatably connected to the U-shaped outer frame 21, and the middle part is connected to the first side plate 22 through the first connecting rod 24. When the first side plate 22 rotates, it pushes the second side plate 23 upward through the first connecting rod 24. The first connecting rod 24 realizes the linkage rotation of the two side plates, and the synchronous movement of the two side plates can be completed by a single power drive.

[0035] An inclined lever 25 is connected to the inner side of the second side plate 23 via a crossbar. When the lever 25 flips outward with the second side plate 23, it can carry out the bulk material. The lever 25 flips synchronously with the second side plate 23, which can actively move the material in the hopper 2, assist the material to be discharged quickly, reduce the unloading load of the movable bucket 26, and improve the unloading efficiency.

[0036] A base 27 is slidably connected below the U-shaped outer frame 21; magnets 210 are provided at different positions of the U-shaped outer frame 21 and the base 27. When the U-shaped outer frame slides in or out relative to the base, the base can magnetically attract the magnets at two different positions of the U-shaped outer frame, thereby maintaining the position of the U-shaped outer frame 21 after sliding with the base; the base 27 is fixed on the conveyor belt.

[0037] The first side plate 22 is provided with a lifting and sliding locking rod 29, and a tension spring 293 is connected between the locking rod 29 and the first side plate 22; the lower end of the locking rod 29 is provided with a bent locking tongue 291, and the base 27 is provided with a T-shaped locking groove 271, the locking tongue 291 can be hooked into the locking groove 271; the end of the locking groove 271 has a notch, and the locking tongue 291 can move out of the locking groove 271 from the notch to unlock.

[0038] The upper end of the locking rod 29 is provided with a trapezoidal seat 292. The side push mechanism 5 engages with the inclined surface N of the trapezoidal seat 292 to drive the locking rod 29 to move upward to unlock. The first side plate 22 is provided with a hanging ear 221 with a hole. The side push mechanism 5 can connect to the hanging ear 221 and control the movement of the U-shaped outer frame 21 or the first side plate 22.

[0039] Y-shaped chute 3 is set between the sides of the ends of the two belt conveyors 1; and is used to receive bulk materials sent out by hopper 2; the materials on both sides are centrally collected and conveyed, improving the overall conveying capacity of the system.

[0040] The chute cleaning device 4 is installed on the Y-shaped chute 3 and is used to clean the bulk materials in the Y-shaped chute 3. Equipped with a dedicated cleaning device, it can clean the residual materials in the chute in real time, realize the simultaneous unloading and cleaning, avoid the material residue from clumping and clogging the chute, and ensure the long-term continuous and stable operation of the system.

[0041] Two side-pushing mechanisms 5 are respectively located on the side away from each other at the ends of the two belt conveyors 1, and are used to apply lateral thrust to the hopper 2 so as to facilitate the discharge of bulk material in the hopper 2.

[0042] The side-pushing mechanism 5 includes a side-pushing bracket 51, the lower end of which is fixed to the belt conveyor 1, and a side electric push rod 52 is installed at the upper end. The telescopic end of the side electric push rod 52 is fixed to a hanging arm seat 56. A push hanging arm 53 is rotatably connected to the hanging arm seat 56. The two push hanging arms 53 are linked by a linkage gear 55 and controlled to rotate by a hanging arm motor 54. The hook end of the push hanging arm 53 can hook into the cavity of the hanging ear 221 and cooperate with the inclined surface of the trapezoidal seat 292.

[0043] The working process of the bulk material conveying system is as follows: 1. Bulk materials are loaded into hopper 2 at the beginning of belt conveyor 1. Hopper 2 moves with the conveyor belt to the end of belt conveyor 1 and corresponds to the Y-shaped chute.

[0044] It enables automated and continuous conveying of bulk materials. The hopper 2 is precisely aligned with the unloading position of the chute along the belt, with high positioning accuracy, which provides a foundation for stable and accurate unloading and ensures continuous assembly line operation.

[0045] 2. The hanging arm motor 54 operates, driving the two side push-hanging arms 53 to rotate synchronously relative to each other via the linkage gear 55. This causes the hook ends of the push-hanging arms 53 to insert into the hanging ear 221 holes of the first side plate 22. The lateral electric push rod 52 pushes the U-shaped outer frame 21 to slide horizontally relative to the base 27, causing a magnet on the U-shaped outer frame 21 to disengage from the magnet 210 on the base 27. When the locking tongue 291 moves horizontally with the locking rod 29 to the notch at the end of the locking groove 271, another magnet on the U-shaped outer frame 21 and the magnet 210 on the base 27 attract each other, keeping the U-shaped outer frame 21 in a horizontally slid-out state relative to the base 27. Then, the push-hanging arms 53 continue to rotate, causing the hook ends of the push-hanging arms 53 to press against the inclined surface of the trapezoidal seat 292. The trapezoidal seat 292, pressed by the inclined surface of the push-hanging arms 53, converts the lateral thrust into an upward lifting force. Under the action of the lifting force, the locking rod 29 slides upward along the first side plate 22, and the tension spring 293 is stretched and stores force. The locking tongue 291 moves upward synchronously with the locking rod 29 and disengages from the notch of the T-shaped locking groove 271 of the base 27, releasing the mechanical lock between the U-shaped outer frame and the base 27. The final position of the locking tongue 291 is higher than the inner bottom surface of the U-shaped outer frame 21, allowing the first side plate 22 to rotate relative to the U-shaped outer frame.

[0046] The synchronously linked push-hanging arm 53 ensures precise docking and uniform force distribution. Magnetic positioning can stably maintain the outer frame's sliding state and prevent displacement during unloading. The inclined force conversion structure enables smooth unlocking, and the spring storage provides power for subsequent reset. The unlocking process is smooth and impact-free, effectively protecting the mechanical structure and improving the equipment's service life and operational stability.

[0047] 3. The lateral electric actuator 52 pushes the hanging arm seat 56 forward, and pushes the first side plate 22 of the hopper 2 through the two push arms 53. The first side plate 22 is pushed inward by the lateral force of the push arms 53, and rotates inward around its upper hinge point. At the same time, the first connecting rod 24 is displaced with the rotation of the first side plate 22, and pushes the second side plate 23 forward, so that the second side plate 23 flips up and outward around its upper hinge point. The rotation speed of the second side plate 23 is faster than that of the first side plate 22, so that the deflector plate 25 pushes the bulk material in the hopper 2 outward, thereby reducing the feeding pressure of the movable bucket 26. Subsequently, the lower end of the first side plate 22 drives the movable bucket 26, so that the movable bucket 26 slides out of the U-shaped outer frame under the guidance of the sliding bar 28, while the bucket back end of the movable bucket 26 is raised. The unloading end of the movable bucket 26 extends out of the conveyor belt and tilts to dump the bulk material outward.

[0048] The dual side plates rotate in sequence, working in conjunction with the active material feeding plate 25 to assist in the rapid unloading of materials, significantly reducing the load on the bucket and preventing material blockage; the inclined unloading method of the bucket sliding and lifting allows the material to fall quickly by gravity, ensuring thorough unloading without residue. The entire linkage mechanism operates smoothly and with a high degree of automation, significantly improving unloading efficiency.

[0049] 4. After all the bulk materials are poured into the receiving cone 31 of the Y-shaped chute below, the bulk materials are sent out along the Y-shaped chute, and the remaining bulk materials in the Y-shaped chute are swept off by the chute cleaning device 4.

[0050] Materials are centrally collected and stably conveyed to the Y-shaped chute 3. The accompanying cleaning device removes residual material in real time, eliminating problems such as material adhesion, clumping, and blockage, ensuring continuous and smooth material discharge from the chute, and achieving simultaneous conveying and self-cleaning, thereby improving the reliability of system operation.

[0051] 5. After the unloading action is completed, the lateral electric push rod 52 retracts and pulls the first side plate 22 downward to rotate and reset via the push arm 53. The movable bucket 26 and the second side plate 23, which are linked to the first side plate 22, also reset. The hanging arm motor 54 rotates in the opposite direction, causing the push arm 53 to disengage from the trapezoidal seat 292, causing the tension spring 293 to rebound and retract, pulling the locking rod 29 downward as a whole. The locking tongue 291 falls with the locking rod 29 and re-engages into the T-shaped locking groove 271 of the base 27 through the notch. The lateral electric push rod 52 continues to retract backward and pulls the U-shaped outer frame relative to the base 27 to reset. When the U-shaped outer frame slides to the initial position, a magnet on the U-shaped outer frame attracts the magnet of the base 27, thus maintaining the U-shaped outer frame in the slid-in state. At this point, the unloading and reset of a single hopper 2 is completed, and it continues to move forward with the belt conveyor 1 to enter the next cycle.

[0052] Relying on the spring rebound, mechanical locking reset and electric push rod linkage, all unloading mechanisms can be fully automatically and accurately reset, with no misalignment or jamming during reset; the locking tongue 291 re-engages into the locking groove 271, quickly restoring the equipment to the locked state, ensuring the structural stability of the hopper 2 in the subsequent conveying process, realizing uninterrupted cyclic operation, and greatly improving the automation level and continuous operation capability of the equipment.

Claims

1. A chute cleaning device for a bulk material conveying system, installed on a Y-shaped chute (3), characterized in that: The Y-shaped chute (3) includes a receiving cone (31) and a Y-shaped tee (32); the lower outlet of the Y-shaped tee (32) is used to discharge bulk material, and the two upper inlets of the Y-shaped tee (32) are respectively connected to a receiving cone (31); The chute cleaning device (4) includes a variable diameter motor (41), a scraper motor (42), and a scraper (43); the scraper (43) is set on the inclined wall of the receiving cone (31) and can swing in a pendulum-shaped area to sweep the bulk material into the Y-shaped tee (32); the scraper motor (42) is installed on the side wall of the receiving cone (31), the output shaft of the scraper motor (42) is connected to the scraper (43) and is used to control the swing; the output shaft of the variable diameter motor (41) passes through the center of the output shaft of the scraper motor (42) and is used to control the scraper to slide along its length.

2. The chute cleaning device for a bulk material conveying system according to claim 1, characterized in that: Two receiving cones (31) are respectively equipped with two chute cleaning devices (4) with one upper and one lower, and the swing areas of the scrapers (43) of the two chute cleaning devices (4) partially overlap.

3. The chute cleaning device for a bulk material conveying system according to claim 1, characterized in that: The output shaft of the scraper motor (42) is connected to a T-shaped slider (45), and the handle end of the scraper (43) is provided with a T-shaped groove (44), which is parallel to the length direction of the scraper (43). The T-shaped slider (45) is slidably disposed in the T-shaped groove (44). When the T-shaped slider (45) slides along the scraper (43), it can change the swing center of the scraper (43).

4. The chute cleaning device for a bulk material conveying system according to claim 2, characterized in that: The bottom of the T-shaped groove (44) is provided with a long strip cavity (47), which is perpendicular to the T-shaped groove (44); the output shaft of the variable diameter motor (41) is eccentrically connected with a push-pull rod (46), which is inserted into the T-shaped groove (44) and can drive the scraper (43) to slide along the T-shaped slider (45).

5. A bulk material conveying system, characterized in that: include: Belt conveyor (1), two belt conveyors (1) are mounted on the same support and parallel to each other; a hopper (2) is installed on the conveyor belt of the belt conveyor (1). Y-shaped chute (3) is set between the sides of the ends of the two belt conveyors (1) and is used to receive bulk materials sent out by the hopper (2); The chute cleaning device (4) of the bulk material conveying system according to any one of claims 1-4; the chute cleaning device (4) is installed on the Y-shaped chute (3) and is used for bulk materials in the Y-shaped chute (3); Two side-push mechanisms (5) are respectively set on the side away from each other at the ends of the two belt conveyors (1) and are used to apply lateral thrust to the hopper (2) so as to facilitate the delivery of bulk material in the hopper (2).

6. The bulk material conveying system according to claim 5, characterized in that: The hopper (2) includes a U-shaped outer frame (21), a sliding bar (28), and a movable bucket (26); the sliding bar (28) is slidably disposed on the inner wall of the U-shaped outer frame (21); the movable bucket (26) is disposed at the bottom of the U-shaped outer frame (21) and is used to carry bulk materials; the unloading end of the movable bucket (26) is connected to the sliding bar (28) so that the movable bucket (26) can extend out of the conveyor belt for unloading; the back end of the movable bucket (26) is translated and lifted under the drive of the side push mechanism (5).

7. The bulk material conveying system according to claim 6, characterized in that: The U-shaped outer frame (21) has a first side plate (22) at the opening near the side push mechanism (5). The upper end of the first side plate (22) is rotatably connected to the U-shaped outer frame (21), and the lower end is rotatably connected to the movable bucket (26). When the side push mechanism (5) applies a lateral thrust to the first side plate (22), the first side plate (22) is linked to the movable bucket (26). The U-shaped outer frame (21) has a second side plate (23) at the opening on the side near the Y-shaped chute (3). The upper end of the second side plate (23) is rotatably connected to the U-shaped outer frame (21), and the middle part is connected to the first side plate (22) through the first connecting rod (24). When the first side plate (22) rotates, the second side plate (23) is pushed upward by the first connecting rod (24).

8. The bulk material conveying system according to claim 7, characterized in that: An inclined lever (25) is connected to the inner side of the second side plate (23) via a crossbar. When the lever (25) flips outward with the second side plate (23), it can carry out the bulk material.

9. The bulk material conveying system according to claim 7 or 8, characterized in that: A base (27) is slidably connected below the U-shaped outer frame (21); magnets (210) are provided at different positions on the U-shaped outer frame (21) and on the base (27), and the magnets (210) are used to maintain the position of the U-shaped outer frame (21) after sliding; the base (27) is fixed on the conveyor belt, and a lifting and sliding locking rod (29) is provided on the first side plate (22), and a tension spring (293) is connected between the locking rod (29) and the first side plate (22); a bent locking tongue (291) is provided at the lower end of the locking rod (29), and a T-shaped locking groove is provided on the base (27). 271), the latch (291) can hook into the lock groove (271); the end of the lock groove (271) has a notch, and the latch (291) can move out of the lock groove (271) from the notch to unlock; the upper end of the lock rod (29) is provided with a trapezoidal seat (292), and the side push mechanism (5) cooperates with the inclined surface of the trapezoidal seat (292) to drive the lock rod (29) to move up to unlock; the first side plate (22) is provided with a hanging ear (221) with a hole, and the side push mechanism (5) can connect the hanging ear (221) and control the movement of the U-shaped outer frame (21) or the first side plate (22).

10. The bulk material conveying system according to claim 9, characterized in that: The side push mechanism (5) includes a side push bracket (51), the lower end of which is fixed on the belt conveyor (1), and the upper end is equipped with a side electric push rod (52). The telescopic end of the side electric push rod (52) is fixed with a hanging arm seat (56). A push hanging arm (53) is rotatably connected to the hanging arm seat (56). The two push hanging arms (53) are linked by a linkage gear (55) and controlled to rotate by a hanging arm motor (54). The hook end of the push hanging arm (53) can hook into the cavity of the hanging ear (221) and cooperate with the inclined surface of the trapezoidal seat (292).

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