A foreign matter cleaning device and coal feeder

Abstract

The utility model relates to coal conveying equipment technical field especially provide a foreign matter cleaning device and coal feeder, the foreign matter cleaning device includes operating handle, cleaning component and elastic reset piece, and the cleaning component is worn and is equipped with the shell top of coal feeder, and one end of cleaning component is located at the outside of coal feeder and is fixedly connected with operating handle, and the execution end of cleaning component is located in the internal space of coal feeder, and the elastic reset piece is located in the internal space of coal feeder, and the elastic reset piece is sleeved on part cleaning component, and one end of elastic reset piece is fixedly connected with the inner top of shell, and the other end of elastic reset piece is fixedly connected with cleaning component. The coal feeder includes the foreign matter cleaning device. The foreign matter cleaning device and coal feeder provided by the utility model are used for realizing on -line cleaning foreign matter without stopping machine, improve operation safety, avoid production interruption, prolong the life of equipment.

Description

Technical Field

[0001] This utility model relates to the field of coal conveying equipment technology, and in particular to a foreign object cleaning device and a coal feeder. Background Technology

[0002] Weighing feeders are key equipment in thermal power plants, with their core component being the conveyor belt. The belt has raised skirts on both sides to prevent coal and other materials from spilling out during transport. However, during normal operation, foreign objects such as anchor bolts, plastic sleeves, and reinforcing bars often become stuck in the narrow gaps between the belt and the skirts or between the belt and the front end of the feeder casing. This sticking not only accelerates wear on the belt and skirts, leading to unauthorized maintenance shutdowns, but can also cause serious malfunctions such as belt misalignment and tearing due to foreign object entanglement or impact, directly affecting the stability of the entire coal conveying system and the safe operation of the generator unit.

[0003] The foreign object removal method in related technologies involves interrupting the operation of the coal feeder and manually opening the end gate for removal. This method is not only inefficient and labor-intensive, but also increases the workload of maintenance and operation personnel due to frequent equipment starts and stops, which also brings higher operational risks and causes the equipment to lose its standby status for a short period of time. Utility Model Content

[0004] This utility model was proposed in view of the above problems. It provides a foreign object removal device and a coal feeder, which can achieve online foreign object removal without stopping the machine, improving operational safety, avoiding production interruptions, and extending equipment life.

[0005] According to one aspect of the present invention, a foreign object cleaning device is provided, applied to a coal feeder. The coal feeder includes a housing and a belt drive mechanism located within the housing. The foreign object cleaning device includes an operating handle, a cleaning component, and an elastic reset member. The cleaning component passes through the top of the housing of the coal feeder. One end of the cleaning component is located outside the coal feeder and is fixedly connected to the operating handle. The other end of the cleaning component is located inside the coal feeder. The elastic reset member is located inside the coal feeder and is sleeved on a portion of the cleaning component. One end of the elastic reset member is fixedly connected to the inner top of the housing, and the other end of the elastic reset member is fixedly connected to the cleaning component.

[0006] According to another aspect of the present invention, a coal feeder is provided, including a housing, a belt drive mechanism located in the internal space of the housing, and at least two foreign matter cleaning devices as described in the first aspect. The top portion of the housing has at least two mounting holes corresponding to the number of foreign matter cleaning devices, and the corresponding foreign matter cleaning devices are inserted into the corresponding mounting holes. The actuating end of the foreign matter cleaning device extends into the internal space of the coal feeder.

[0007] Compared with existing technologies, the foreign object cleaning device and coal feeder provided by this utility model have the following advantages: First, the coal feeder includes a housing and a belt drive mechanism located inside the housing. The foreign object cleaning device includes an operating handle, a cleaning component, and a resilient reset component. The cleaning component passes through the top of the coal feeder's housing, with one end located outside the coal feeder and fixedly connected to the operating handle, and the other end located inside the coal feeder. Therefore, in use, the operator drives the cleaning component penetrating the housing through the external operating handle, allowing the operator to safely and conveniently operate the cleaning device from outside the equipment while the coal feeder is running normally. Second, the resilient reset component is located inside the coal feeder, sleeved on part of the cleaning component, with one end fixedly connected to the inner top of the housing and the other end fixedly connected to the cleaning component. Therefore, in use, the operator applies force to the cleaning component through the external operating handle, pushing its bottom end downward to remove foreign objects between the belt skirt and the front end of the coal feeder. After cleaning, releasing the handle causes the resilient reset component to automatically reset the cleaning component by its rebound force, restoring it to its initial position, thus forming a stable automatic reset mechanism.

[0008] As can be seen, this disclosure enables online cleaning of the coal feeder without shutting it down, completely avoiding production interruptions caused by the traditional method of stopping the machine. It fundamentally improves operational safety through external operation, eliminating the risk of personnel contact with moving parts. Timely cleaning effectively prevents damage to the belt and skirt, extending equipment life. Furthermore, after cleaning, the cleaning components automatically return to a safe standby position, not only avoiding interference with the normal operation of the belt but also simplifying the operation process. Attached Figure Description

[0009] The above and other objects, features, and advantages of this utility model will become more apparent from the more detailed description of the embodiments thereof in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this utility model and form part of the specification. They are used together with the embodiments of this utility model to explain the utility model and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0010] Figure 1 A front view of the coal feeder provided in an embodiment of the present invention is shown;

[0011] Figure 2 This shows an internal side view of the coal feeder in a non-working state of the foreign matter cleaning device provided in this embodiment of the present invention;

[0012] Figure 3 The diagram shows an internal side view of the coal feeder in the working state of the foreign object cleaning device provided in this embodiment of the invention.

[0013] Figure label:

[0014] 100 - Housing, 200 - Belt conveyor mechanism, 210 - Belt, 220 - Skirt, 300 - Foreign object removal device, 310 - Operating handle, 320 - Cleaning assembly, 330 - Elastic reset element, 340 - Annular boss. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model more apparent, exemplary embodiments according to this utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this utility model, and not all embodiments of this utility model. It should be understood that this utility model is not limited to the exemplary embodiments described herein.

[0016] Weighing feeders are key equipment in thermal power plants, used to transport coal. Their core component is the conveyor belt, which has raised skirts on both sides to prevent coal and other materials from spilling out during transport. However, during normal operation, while the skirts effectively prevent material spillage, they also create a structural space prone to clogging. Objects such as anchor bolts, plastic sleeves, and reinforcing bars can easily become embedded in the narrow gaps between the belt and the skirts or between the belt and the front of the machine casing. Such clogging not only accelerates wear on the belt and skirts, leading to unauthorized maintenance shutdowns, but can also cause serious malfunctions such as belt misalignment and tearing due to obstruction or impact from foreign objects, directly affecting the stability of the entire coal conveying system and the safe operation of the generator unit.

[0017] The cleaning method in the relevant technology requires interrupting the operation of the coal feeder and manually opening the end gate for cleaning. This not only results in low work efficiency and high labor intensity, but also increases mechanical impact and electrical burden due to frequent equipment start-ups and shutdowns, shortening equipment lifespan and bringing higher operational risks. It also causes the equipment to lose its standby status for a short period of time.

[0018] To address the aforementioned problems, this utility model provides a foreign object removal device that enables online foreign object removal from a coal feeder during normal operation. Operators can safely and conveniently remove foreign objects stuck between the belt and the outer casing from outside the equipment without stopping the machine, effectively avoiding production interruptions and losses caused by frequent equipment start-ups and shutdowns. Simultaneously, it significantly improves the safety and efficiency of the cleaning operation and extends the equipment's service life. It should be understood that this foreign object removal device is applied to a coal feeder.

[0019] Figure 1 A front view of the coal feeder provided in an embodiment of the present invention is shown. Figure 2 This shows an internal side view of the coal feeder in a non-operating state of the foreign object cleaning device provided in this embodiment of the invention. Figure 3This diagram shows an internal side view of the coal feeder in the working state of the foreign object cleaning device provided in an embodiment of the present invention. Figures 1-3 As shown, the coal feeder provided in this embodiment of the present invention includes a housing 100, a belt conveyor mechanism 200 located in the internal space of the housing 100, and at least two foreign matter cleaning devices 300 of this embodiment. The top portion of the housing 100 has at least two mounting holes corresponding to the number of foreign matter cleaning devices 300, and the corresponding foreign matter cleaning devices 300 are inserted into the corresponding mounting holes. The actuating end of the foreign matter cleaning device 300 extends into the internal space of the coal feeder. It should be understood that the belt conveyor structure includes a belt 210, and skirts 220 extending above the belt are provided on both sides of the belt 210.

[0020] In practical applications, each foreign object removal device 300 is installed in the corresponding mounting hole, which not only ensures the sealing and stability of the connection between the device and the outer shell 100, but also allows the actuator end of the device to accurately extend into the internal space of the coal feeder and directly act on the area around the belt conveyor mechanism 200 where foreign objects are prone to accumulate.

[0021] For example, such as Figure 1 As shown, the aforementioned multiple foreign object removal devices 300 can be arranged at intervals along the width direction of the belt conveyor mechanism 200 to cover different cleaning areas. The width direction of the belt conveyor mechanism 200 can be defined as the width direction of the belt.

[0022] For example, the aforementioned foreign object removal device 300 can be positioned above the skirt, and the orthographic projection of the foreign object removal device 300 on the horizontal plane falls directly above the gap area between the front end of the belt conveyor 200 and the front end of the coal feeder.

[0023] Specifically, mounting holes are made on the top of the coal feeder housing 100, corresponding to the skirt edge, so that after the foreign object removal device 300 is inserted, its orthographic projection on the horizontal plane falls precisely above the gap area between the front end of the belt 210 and the front end of the coal feeder. In this way, when foreign objects appear in the gap, the operator only needs to push the corresponding foreign object removal device 300 from the outside of the coal feeder, allowing its actuator to precisely extend downwards into the gap area, directly contacting and removing the stuck foreign object. This avoids accidental contact with the operating belt or skirt 220 due to device misalignment, and efficiently covers the critical area most prone to foreign object accumulation, maximizing the effectiveness of the cleaning device and ensuring stable coal conveying by the coal feeder.

[0024] In one example, the outer casing 100 of the aforementioned coal feeder is also provided with an observation window (not shown in the figure), and the movement trajectory of the foreign object removal device 300 is within the visible range of the observation window. It should be understood that the observation window can be located at any position where the movement trajectory of the foreign object removal device 300 can be seen; no limitation is made here. Before removing foreign objects, the operator can clearly observe the position, size, and jamming status of the foreign objects inside through the observation window, and then start or stop the foreign object removal device 300.

[0025] In practical applications, such as Figure 3 As shown, when the coal feeder is operating normally and conveying coal, if the operator finds foreign objects such as anchor rods, plastic sleeves, or steel bars stuck in the gap between the front end of the belt and the front end of the coal feeder through the observation window, or detects a slight belt deviation (most likely caused by foreign object jamming), there is no need to stop the machine or disassemble the coal feeder casing 100. Simply locate the foreign object cleaning device 300 above the corresponding skirt 220 according to the location of the foreign object, and then use the actuator of the foreign object cleaning device 300 to clean the stuck foreign object, push out or disperse the foreign object in the gap, and avoid the foreign object from continuing to jam and damage the belt.

[0026] In one feasible way, such as Figures 1-3 As shown, the foreign object cleaning device 300 provided in this embodiment includes an operating handle 310, a cleaning component 320, and an elastic reset member 330. The cleaning component 320 passes through the top of the outer shell 100 of the coal feeder. One end of the cleaning component 320 is located outside the coal feeder and is fixedly connected to the operating handle 310. The actuating end of the cleaning component 320 is located in the internal space of the coal feeder. The elastic reset member 330 is located in the internal space of the coal feeder. The elastic reset member 330 is sleeved on a portion of the cleaning component 320, and one end of the elastic reset member 330 is fixedly connected to the inner top of the outer shell 100. The other end of the elastic reset member 330 is fixedly connected to the cleaning component 320.

[0027] In practice, when the operator observes foreign objects blocking the gap between the front end of the belt conveyor 200 and the front end of the coal feeder, axial pressure is applied through the external operating handle 310 of the coal feeder. This drives the cleaning component 320 to overcome the preload of the elastic reset component 330 and move downwards. The actuator, located inside the equipment, precisely descends to the predetermined working position corresponding to the foreign object blocking area. The actuator mechanically intervenes to remove the foreign object. Then, the external force is removed, and the elastic potential energy stored in the elastic reset component 330 is released instantaneously, pushing the cleaning component 320 to automatically reset axially to its initial safe position. This position ensures a sufficient safe distance between the actuator and the running belt surface. The entire operation is completed while maintaining continuous operation of the coal feeder. This not only achieves efficient online cleaning of foreign objects, avoiding production interruptions caused by traditional shutdown operations, but also completely eliminates the risk of personnel contact with moving parts through a fully external operation mode. Furthermore, the design of the elastic reset structure ensures both ease of operation and automatic safe reset after intervention, effectively maintaining equipment sealing and operational stability.

[0028] In one example, the cleaning assembly 320 includes a drive rod 321 and an actuator 322. The drive rod 321 passes through the outer casing 100 of the coal feeder. One end of the drive rod 321 is located outside the coal feeder and is fixedly connected to the operating handle 310. The other end of the drive rod 321 is located inside the coal feeder and is fixedly connected to the actuator 322. An elastic reset member 330 is sleeved on the drive rod 321, and the other end of the elastic reset member 330 is fixedly connected to the drive rod 321. The drive rod 321 is axially movable on the outer casing 100 of the coal feeder to drive the actuator 322 to move closer to or away from the belt conveyor mechanism 200. The drive rod 321 is rotatable on the outer casing 100 of the coal feeder about its own axis to drive the actuator 322 to move or impact foreign objects.

[0029] In practical applications, the operator first presses the handle downwards along the axial direction, driving the transmission rod 321 to slide downwards. This causes the actuator 322 to overcome the resistance of the elastic reset member 330 and descend to the working depth where it contacts the foreign object. Then, the operator rotates the operating handle 310, transmitting torque to the transmission rod 321, causing it to rotate around its axis within the mounting hole. This ultimately drives the actuator 322 to perform prying, sweeping, or impact actions to clean the obstructed foreign object. After cleaning, the operator releases the operating handle 310, releasing the elastic potential energy stored in the elastic reset member 330. Its lower end pushes the lower end face of the annular boss, precisely resetting the transmission rod 321 to its initial safe height. At this point, the actuator 322 is completely disengaged from the belt working area, ensuring the feeder continues to operate normally. The entire operation can be completed without stopping the machine. The cooperative design of the elastic reset member 330 and the annular boss achieves a stable and reliable automatic reset function, significantly improving the efficiency and safety of foreign object cleaning.

[0030] The aforementioned elastic reset component 330 can be a helical spring or a disc spring. The lower end of the elastic reset component 330 can be fixedly connected to the transmission rod 321 via a structure such as an annular boss, shoulder, or snap ring on the transmission rod 321. Specifically, the transmission rod 321 can adopt an annular structure design, with a radially protruding annular boss 340 integrally machined near the actuator head 322, so that the lower end of the elastic reset component 330 directly abuts against the lower end face of the annular structure to achieve axial limiting of the elastic reset component 330. The upper end of the elastic reset component 330 can be fixed to the top of the outer casing 100 of the coal feeder by welding. This ensures that after the operator releases the handle, the rebound force of the elastic reset component 330 can effectively drive the transmission rod 321 and actuator head 322 to reset, while preventing the elastic reset component 330 from shifting or falling off during the axial movement or rotation of the transmission rod 321, thus ensuring the stability and reliability of the overall movement of the device.

[0031] It should be noted that the aforementioned transmission rod 321, as a core transmission component, is installed in the mounting hole of the coal feeder housing 100 with a dual-degree-of-freedom motion, capable of axial movement and rotation around its own axis. One end of the transmission rod 321 is located outside the coal feeder equipment and is rigidly connected to the operating handle 310 by means of bolt connection or flange connection, etc. The inner end extends into the internal space of the equipment and is fixedly connected to the actuator head 322 by threaded connection, welding or quick-release pin mechanism, or the actuator head 322 and the transmission rod 321 are directly integrated into a single structure.

[0032] In one example, the aforementioned transmission rod 321, as a core transmission component, is inserted into the mounting hole of the coal feeder housing 100 in a dual-degree-of-freedom motion manner, allowing for axial movement and rotation around its own axis. Specifically, this can be achieved by installing a combined support structure of linear and rotary bearings within the mounting hole, or by directly using a spline bushing to form a composite motion pair with the housing 100. For example, a spline bushing can be press-fitted or fixed in the mounting hole of the coal feeder housing 100, and the transmission rod 321 can utilize a matching spline shaft structure. The meshing characteristics of the spline pair allow the transmission rod 321 to move along the spline direction (axially) while reliably transmitting torque to achieve rotational motion around its axis, making it an ideal mechanical structure for realizing dual-degree-of-freedom motion.

[0033] In practical applications, when the operator presses down the handle, the transmission rod 321, guided by the spline pair, slides smoothly down along the spline teeth (i.e., axially) without radial wobble, ensuring the vertical descent accuracy of the actuator head 322. When the handle is rotated, torque is efficiently and smoothly transmitted to the transmission rod 321 through the precise meshing of the spline teeth, driving the actuator head 322 to produce an effective rotational cleaning action. The special structure of the spline pair enables it to simultaneously perform guiding and torque transmission functions, improving the reliability of the system.

[0034] In another example, a bushing (such as a self-lubricating bearing) is embedded in the mounting hole of the coal feeder housing 100. The inner hole of the bushing is clearance-fitted with the outer diameter of the transmission rod 321, ensuring that the transmission rod 321 can move smoothly axially and providing a low-friction contact surface for its rotation around its own axis. The bushing is fixed to the mounting hole by an interference fit or bolts to ensure its stable position on the housing 100. After the transmission rod 321 passes through the bushing, the radial wobble is restricted by the guiding effect of the bushing, retaining only two degrees of freedom: axial movement and circumferential rotation.

[0035] In one alternative embodiment, the actuator 322 is arranged perpendicularly to the transmission rod 321. It should be understood that the included angle between the ends of the transmission rod 321 and the actuator 322 that contact each other is 90 degrees.

[0036] In practical applications, when the actuator head 322 is perpendicular to the transmission rod 321, the cleaning assembly 320 has an L-shaped structure. During use, when the operator observes through the observation window that a long, narrow foreign object (such as a steel bar, anchor bolt, plastic sleeve, or wooden strip) is obliquely stuck between the belt and the front end of the feeder, or between the skirt 220 and the front end of the feeder, the operator presses down the operating handle 310. This causes the transmission rod 321 to move the horizontal actuator head 322 downwards, entering the space between the belt and the front end of the feeder, or between the skirt 220 and the front end of the feeder. Once the actuator head 322 reaches the location of the foreign object, the operator does not need to press down forcefully. Instead, by rotating the operating handle 310, the transmission rod 321 rotates the actuator head 322 in the horizontal plane. During rotation, the horizontal actuator head impacts and changes the position of the stuck ends of the foreign object, causing it to dislodge and completing the cleaning of the foreign object stuck in the feeder belt mechanism.

[0037] In some examples, the length of the aforementioned drive rod 321 is greater than the distance between the belt conveyor 200 and the top of the feeder. Therefore, it ensures that throughout the entire operating stroke, even when the operator uses the operating handle 310 to press the drive rod 321 to its limit position, the end of the drive rod 321 located outside the feeder retains a sufficiently long gripping section, preventing the handle from completely entering the mounting hole and causing operational inconvenience or inability to apply force. Simultaneously, and more importantly, it ensures that the internal actuator 322 has sufficient working stroke to smoothly descend from the initial safe standby position (away from the belt) to the lowest working position, thereby effectively reaching and handling any jammed foreign objects.

[0038] In some examples, the length of the aforementioned actuator 322 is less than the distance between the belt conveyor 200 and the front end of the feeder. It should be understood that this distance can be defined as the distance between the belt and the front end of the feeder, and the distance between the skirt 220 and the front end of the feeder. This ensures that when the drive rod 321 is pressed down and the actuator 322 descends to its lowest point, the end of the actuator 322 will never experience any form of mechanical collision or contact with the surface of the running belt or the inner wall of the feeder's housing 100. This not only protects the actuator 322 itself and the internal structure of the feeder (such as the skirt 220 and the inner wall of the housing 100) from scratches or impact damage, but also prevents the reaction force generated by accidental collisions from affecting the operating feel or even damaging the drive rod 321 and the reset mechanism. Thus, while achieving efficient cleaning, it maximizes the safety and stable operation of the feeder's main equipment.

[0039] For example, the size of the operating handle 310 can be set to be larger than the mounting hole to prevent the operating handle 310 from entering the mounting hole when it is pressed down.

[0040] The foreign object removal device 300 and coal feeder of this utility model embodiment include an operating handle 310 located outside the coal feeder, a transmission assembly penetrating the machine casing, and an elastic reset mechanism and an actuator 322 located inside the machine casing. Through the design of the axially movable and circumferentially rotatable transmission rod 321, the operator can drive the actuator 322 from the outside to perform mechanical intervention and removal of foreign objects without stopping the machine. The elastic reset mechanism adopts a pre-compression design to ensure that the actuator 322 automatically resets to a safe standby position after the operating force is released. The dimensions of the transmission rod 321 and the actuator 322 are precisely calculated to meet the cleaning stroke requirements while strictly avoiding interference with the belt drive system and the inner wall of the machine casing. This device effectively solves the drawback of traditional cleaning methods requiring machine shutdown, significantly improving the safety and maintenance efficiency of continuous equipment operation. It is particularly suitable for the rapid handling of foreign objects such as anchor bolts and reinforcing bars stuck in the gap between the belt and the skirt 220 in the coal conveying system of thermal power plants.

[0041] Example

[0042] When the operator discovers foreign objects such as anchor bolts or plastic sleeves stuck between the front end of the belt and the front end of the feeder, or between the belt skirt 220 and the machine casing, through the observation window of the outer casing 100 during normal operation of the feeder, first determine the corresponding foreign object removal device 300 based on the location of the foreign object. Then, hold the operating handle 310 of the device and apply downward force axially to drive the transmission rod 321, which passes through the outer casing 100 of the feeder, to move downward against the pre-tightening force of the internal elastic reset member 330. This drives the actuator head 322, located inside the feeder and perpendicular to the transmission rod 321, to approach the area where the foreign object is located. After passing through the observation window... After confirming that the actuator 322 has reached the vicinity of the foreign object, while maintaining moderate downward pressure, rotate the operating handle 310 around the axis of the transmission rod 321 to make the actuator 322 rotate synchronously to pry, strike, or pry the foreign object until it is removed from the jamming gap and conveyed to the designated area by the belt. After the foreign object is cleared, release the operating handle 310, and the internal elastic reset component 330 releases its elastic potential energy, which drives the transmission rod 321 and the actuator 322 to automatically return to the initial safe position (maintaining a safe distance from the running belt). The entire process does not require stopping the machine and is completed outside the coal feeder.

[0043] The basic principles of this utility model have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this utility model are merely examples and not limitations, and should not be considered as essential features of each embodiment of this utility model. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the utility model from being implemented using the aforementioned specific details.

[0044] The block diagrams of the devices, apparatuses, equipment, and systems involved in this utility model are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” and “having” are open-ended terms meaning “including but not limited to” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to” and is used interchangeably with it.

[0045] Additionally, as used herein, the "or" used in a list of items beginning with "at least one" indicates a separate list, such that a list of, for example, "at least one of A, B, or C" means A or B or C, or AB or AC or BC, or ABC (i.e., A and B and C). Furthermore, the word "exemplary" does not imply that the described example is preferred or better than other examples.

[0046] It should also be noted that in the system and method of this utility model, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this utility model.

[0047] Various changes, substitutions, and modifications can be made to the technology described herein without departing from the teachings defined by the appended claims. Furthermore, the scope of the claims of this utility model is not limited to the specific aspects of the processes, machines, manufacturing processes, events, means, methods, and actions described above. Currently existing or later-developed processes, machines, manufacturing processes, events, means, methods, or actions that perform substantially the same function or achieve substantially the same result as the corresponding aspects described herein can be utilized. Therefore, the appended claims include such processes, machines, manufacturing processes, events, means, methods, or actions within their scope.

[0048] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of the present invention. Therefore, the present invention is not intended to be limited to the aspects shown herein, but rather to be carried out within the widest scope consistent with the principles and novel features disclosed herein.

[0049] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of the present invention to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations therein.

Claims

1. A foreign object removal device, characterized in that, The device is applied to a coal feeder, which includes a housing and a belt drive mechanism located inside the housing. The foreign object removal device includes an operating handle, a cleaning component, and a resilient reset component. The cleaning component passes through the top of the housing of the coal feeder. One end of the cleaning component is located outside the coal feeder and is fixedly connected to the operating handle. The actuating end of the cleaning component is located inside the coal feeder. The resilient reset component is located inside the coal feeder and is sleeved on a portion of the cleaning component. One end of the resilient reset component is fixedly connected to the inner top of the housing, and the other end of the resilient reset component is fixedly connected to the cleaning component.

2. The foreign object removal device according to claim 1, characterized in that, The cleaning assembly includes a transmission rod and an actuator. The transmission rod passes through the outer casing of the coal feeder. One end of the transmission rod is located outside the coal feeder and is fixedly connected to the operating handle. The other end of the transmission rod is located inside the coal feeder and is fixedly connected to the actuator. The elastic reset member is sleeved on the transmission rod, and the other end of the elastic reset member is fixedly connected to the transmission rod.

3. The foreign object removal device according to claim 2, characterized in that, The transmission rod is axially movable on the outer casing of the coal feeder to drive the actuator head closer to or away from the belt drive mechanism.

4. The foreign object removal device according to claim 3, characterized in that, The transmission rod is rotatably mounted on the outer casing of the coal feeder around its own axis to drive the actuator head to move or strike foreign objects.

5. The foreign object removal device according to claim 2, characterized in that, The actuator head is positioned perpendicular to the transmission rod.

6. The foreign object removal device according to claim 5, characterized in that, The length of the transmission rod is greater than the distance between the belt drive mechanism and the top of the coal feeder.

7. The foreign matter removal device according to any one of claims 2 to 6, characterized in that, The length of the actuator head is less than the distance between the belt drive mechanism and the front end of the coal feeder.

8. A coal feeder, characterized in that, The device includes a housing, a belt drive mechanism located in the internal space of the housing, and at least two foreign object cleaning devices as described in any one of claims 1 to 7. The top portion of the housing has at least two mounting holes corresponding to the number of foreign object cleaning devices, and the corresponding foreign object cleaning devices are inserted into the corresponding mounting holes. The actuating end of the foreign object cleaning device extends into the internal space of the coal feeder.

9. The coal feeder according to claim 8, characterized in that, The outer casing of the coal feeder is also provided with an observation window, and the movement trajectory of the foreign object cleaning device is within the visible range of the observation window.

10. The coal feeder according to claim 9, characterized in that, The orthographic projection of the foreign object removal device on the horizontal plane falls directly above the gap area between the front end of the belt of the belt drive mechanism and the front end of the coal feeder.

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