A coal anti-scattering system for the overlap of a reciprocating coal feeder and a belt conveyor

Abstract

The utility model discloses a kind of anti-spraying coal systems for the overlap of reciprocating coal feeder and belt conveyor, comprising: link blocking coal soft board, located in the downside of reciprocating coal feeder, its upper end is fixedly connected with the downside of reciprocating coal feeder, its lower end is set to the belt of belt conveyor and is contacted with the belt of belt conveyor;Coal blocking bearing plate is located in the downside of reciprocating coal feeder, and is obliquely arranged, and its lower end is set to the belt of belt conveyor, and is spaced apart from the belt by first predetermined distance;Baffle support frame is vertically arranged in the side of belt conveyor, and its lower end is fixedly connected with the longitudinal beam of belt conveyor, and its upper end extends upwards, and is fixedly connected with one side of coal blocking bearing plate, for fixing coal blocking bearing plate;The utility model can effectively receive large-flow coal flow when coal feeder is discharged by setting oblique coal blocking bearing plate, reduce the splashing and eccentric load caused by coal drop, prevent coal from falling from the edge of belt.

Description

Technical Field

[0001] This utility model belongs to the field of coal and mineral material transportation, and in particular relates to a coal spill prevention system at the junction of a reciprocating coal feeder and a belt conveyor. Background Technology

[0002] In coal preparation plants, reciprocating feeders are widely used in the quantitative feeding of coal. Their discharge end is typically directly connected to a belt conveyor for continuous coal transfer. In existing connection structures, a chute or guide plate is installed below the feeder to guide the coal flow into the central area of ​​the belt conveyor. However, due to the reciprocating motion of the feeder during operation, a dynamic gap forms between its outlet and the belt conveyor. Combined with the shallow slope of the chute, coal particles easily accumulate and spill between the guide plate and the chute, resulting in coal spillage. Furthermore, traditional structures often use rigid baffles, which cannot adapt to displacement changes during equipment operation, resulting in poor sealing. Fine coal and dust can easily leak from the gaps to the area below the equipment, causing environmental pollution and increasing the workload of coal cleaning. The above structure has revealed problems such as serious coal spillage, frequent coal cleaning, high labor intensity and high equipment failure rate in actual operation. Especially under high load conditions, the impact of coal flow leads to increased splashing and coal leakage, which affects the stable operation of the system. Utility Model Content

[0003] The purpose of this invention is to provide a coal spill prevention system at the junction of a reciprocating coal feeder and a belt conveyor, in order to solve the problem of coal spillage caused by the dynamic gap at the junction of the reciprocating coal feeder and the belt conveyor during operation.

[0004] This utility model adopts the following technical solution: a coal spill prevention system for the junction of a reciprocating coal feeder and a belt conveyor, comprising: The connecting coal retaining plate is located on the lower side of the reciprocating coal feeder. Its upper end is fixedly connected to the lower side of the reciprocating coal feeder, and its lower end is set towards the belt of the belt conveyor and in contact with the belt of the belt conveyor. The coal retaining plate is located on the lower side of the reciprocating coal feeder, and is inclined. Its lower end is set towards the belt of the belt conveyor and is spaced apart from the belt by a first predetermined distance. The baffle support frame is vertically installed on the side of the belt conveyor. Its lower end is fixedly connected to the longitudinal beam of the belt conveyor, and its upper end extends upward and is fixedly connected to one side of the coal retaining bearing plate to fix the coal retaining bearing plate. Among them, the coal blocking bearing plate is used to block and support the coal when the reciprocating coal feeder is unloading a large amount of coal, thereby preventing the coal from falling off the belt conveyor and falling below the reciprocating coal feeder; The connecting coal-blocking flexible plate is used to block coal from the reciprocating coal feeder and to prevent coal from falling through the gap between the coal-blocking bearing plate and the belt of the belt conveyor to the bottom of the reciprocating coal feeder during the left and right movement of the reciprocating coal feeder.

[0005] The beneficial effects of this utility model are: This utility model, by setting an inclined coal-blocking bearing plate, can effectively bear the large flow of coal when the coal feeder is unloading, reduce splashing and eccentric loading caused by coal drop, and prevent coal from falling off the edge of the conveyor belt. This invention utilizes a flexible connecting coal-blocking plate that contacts the surface of the conveyor belt. This plate's flexibility allows it to continuously adhere to the belt during the reciprocating motion of the feeder, dynamically sealing the gap between the belt and the feeder. Since the coal-blocking support plate is rigid, contact with the belt would damage it. Therefore, using the connecting coal-blocking plate to seal the gap between the belt and the support plate effectively prevents coal from falling through the gap. Attached Figure Description

[0006] Figure 1 This is a first-view structural schematic diagram of the present invention; Figure 2 This is a structural schematic diagram of the present invention from a second perspective; Figure 3 This is a structural schematic diagram of the present invention from a third-view perspective.

[0007] Among them: 10. Connecting coal retaining plate; 11. Coal retaining bearing plate; 12. Baffle support frame; 13. Fixed bracket; 14. Reciprocating coal feeder; 15. Belt conveyor. Detailed Implementation

[0008] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0009] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more. The term "orientation" in this utility model refers to the orientation of the utility model within the... Figure 1 Description of the state's progression.

[0010] To address the issues of shallow chute slope, severe coal accumulation on the conveyor belt, and heavy cleaning workload associated with the reciprocating coal feeder 14 in coal preparation plants, the existing overlapping structure creates a dynamic gap between the reciprocating coal feeder 14 and the belt conveyor 15. Especially during the reciprocating motion of the feeder, coal easily spills from the gaps at the overlap, causing ground accumulation, environmental pollution, and increasing the frequency of coal cleaning operations and the risk of equipment failure. Furthermore, during high-flow coal unloading, the coal flow directly impacts the edge of the belt or deviates from the center area, easily causing belt misalignment and material spillage, affecting the continuous and stable operation of the system.

[0011] This utility model discloses a coal spill prevention system at the junction of a reciprocating coal feeder and a belt conveyor, such as... Figure 1-3 As shown, it includes: a connecting coal retaining plate 10, a coal retaining bearing plate 11, and a baffle support frame 12.

[0012] The connecting coal retaining plate 10 is located on the lower side of the reciprocating coal feeder 14. The upper end of the connecting coal retaining plate 10 is fixedly connected to the lower side of the reciprocating coal feeder 14. The lower end of the connecting coal retaining plate 10 is set towards the belt of the belt conveyor 15 and contacts the belt of the belt conveyor 15.

[0013] The coal retaining plate 11 is located on the lower side of the reciprocating coal feeder 14. The coal retaining plate 11 is inclined and its lower end faces the belt of the belt conveyor 15, and is spaced apart from the belt by a first predetermined distance.

[0014] The baffle support frame 12 is vertically arranged on the side of the belt conveyor 15. The lower end of the baffle support frame 12 is fixedly connected to the longitudinal beam of the belt conveyor 15, and the upper end of the baffle support frame 12 extends upward and is fixedly connected to one side of the coal retaining bearing plate 11. The baffle support frame 12 is used to fix the coal retaining bearing plate 11.

[0015] Among them, the coal blocking bearing plate 11 is used to block and support the coal when the reciprocating coal feeder 14 is unloading a large amount of coal, thereby preventing the coal from falling off the belt conveyor 15 and falling below the reciprocating coal feeder 14. The connecting coal-blocking flexible plate 10 is used to block coal from the reciprocating coal feeder 14 and to prevent coal from falling from the gap between the coal-blocking bearing plate 11 and the belt of the belt conveyor 15 to the bottom of the reciprocating coal feeder 14 during the left and right movement of the reciprocating coal feeder 14.

[0016] The present invention also includes: a fixed bracket 13, which is L-shaped. The horizontal section of the fixed bracket 13 is fixedly connected to the upper side of the coal retaining bearing plate 11. The horizontal section of the fixed bracket 13 is set across the belt conveyor 15. The lower end of the vertical section of the fixed bracket 13 is fixedly connected to the longitudinal beam of the belt conveyor, thereby fixing the coal retaining bearing plate 11.

[0017] Preferably, the connecting coal retaining plate 10 is sheet-shaped and has an area larger than that of the coal retaining bearing plate 11.

[0018] Preferably, the distance between the coal-blocking bearing plate 11 and the connecting coal-blocking flexible plate 10 is a second predetermined distance.

[0019] The connecting flexible baffle plate 10 is a flexible baffle component installed at the lower part of the reciprocating coal feeder 14. Its upper end is fixedly connected to the coal feeder body by bolts or welding to ensure a firm and reliable connection; its lower end extends downward and maintains contact with the surface of the belt conveyor 15, forming a continuous flexible sealing interface. This flexible plate can be made of wear-resistant rubber, polyurethane, or other polymer materials with elasticity and tear resistance, with a thickness generally ranging from 8mm to 20mm, which can be adjusted according to the hardness of the coal and the operating frequency on site. Due to its soft material and certain deformation capacity, even if there are slight undulations in the belt or the coal feeder moves back and forth in the horizontal direction, the connecting flexible baffle plate 10 can still adhere tightly to the belt surface, effectively sealing the dynamic gap between the two and preventing fine coal particles or dust from leaking down.

[0020] As an alternative implementation, the connecting coal retaining flexible plate 10 can also be designed as a multi-piece splicing structure with small gaps between each piece to enhance overall flexibility and adapt to a wider range of displacement changes.

[0021] The coal retaining plate 11 is located below the reciprocating coal feeder 14, and is arranged at an angle. Its upper end is close to the feeder's discharge port, and its lower end extends towards the bearing section of the belt conveyor 15, but does not directly contact the belt. Instead, it maintains a certain predetermined distance, usually 50mm to 150mm, to avoid belt damage or increased running resistance due to scraping. This retaining plate is mainly used to receive the large flow of coal discharged from the feeder, changing the coal flow trajectory so that it slides along the plate surface to the center area of ​​the belt, reducing splashing and uneven loading. The coal retaining plate 11 can be made of Q235 carbon steel, wear-resistant steel plate such as NM400, or metal plate with a ceramic composite layer, with a thickness of not less than 6mm. The surface can be polished or coated to reduce the coefficient of friction and improve the smoothness of coal flow. Its tilt angle can be set according to the actual installation space and the drop height, generally controlled between 30° and 60°, which ensures that the coal slides down smoothly without accumulating coal due to an excessively small tilt angle. This bearing plate not only serves as a guide, but also has a certain load-bearing capacity. It can act as a buffer and support when large pieces of coal are suddenly impacted, preventing the coal from falling directly to the ground or jamming the bottom of the equipment.

[0022] The baffle support frame 12, serving as the supporting structure for the entire system, is vertically positioned on one side of the belt conveyor 15. Its lower end is securely connected to the longitudinal beam of the belt conveyor via bolts or welding, while its upper end extends upwards and is fixedly connected to one side of the coal retaining plate 11, thus providing reliable lateral support for the coal retaining plate. This support frame can be fabricated from I-beams, square tubing, or angle steel, exhibiting high structural strength and good bending resistance, capable of withstanding the loads from the coal retaining plate and the impact of the coal flow. The support frame should be positioned to avoid critical components such as belt cleaners and idlers, while also facilitating future maintenance and repair. Under certain operating conditions, auxiliary support rods or diagonal braces can be added to further enhance the overall structural rigidity and prevent loosening or deformation due to long-term vibration.

[0023] The aforementioned components work together in spatial arrangement: the connecting coal-blocking flexible plate 10 is located on the inner side near the conveyor belt to achieve dynamic sealing; the coal-blocking bearing plate 11 is located on the outer upper side, undertaking the main coal flow guidance and bearing tasks; the baffle support frame 12 provides mechanical support from the outside to ensure the stable operation of the coal-blocking bearing plate. The two partially overlap in the vertical direction, forming a layered protection system—the upper layer is intercepted by the coal-blocking bearing plate to block the main coal flow, and the lower layer is sealed by the connecting coal-blocking flexible plate to block residual fine materials, thereby achieving comprehensive control of coal of all particle sizes.

[0024] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A coal spill prevention system at the junction of a reciprocating coal feeder and a belt conveyor, characterized in that, include: The connecting coal retaining plate (10) is located on the lower side of the reciprocating coal feeder (14). Its upper end is fixedly connected to the lower side of the reciprocating coal feeder (14), and its lower end is set towards the belt of the belt conveyor (15) and in contact with the belt of the belt conveyor (15). The coal retaining plate (11) is located on the lower side of the reciprocating coal feeder (14), and is inclined. Its lower end is set towards the belt of the belt conveyor (15) and is spaced from the belt by a first predetermined distance. The baffle support frame (12) is vertically arranged on the side of the belt conveyor (15). Its lower end is fixedly connected to the longitudinal beam of the belt conveyor (15), and its upper end extends upward and is fixedly connected to one side of the coal retaining bearing plate (11) for fixing the coal retaining bearing plate (11). The coal blocking bearing plate (11) is used to block and support the coal when the reciprocating coal feeder (14) is unloading a large amount of coal, thereby preventing the coal from falling off the belt conveyor (15) and falling below the reciprocating coal feeder (14). The connecting coal blocking plate (10) is used to block coal from the reciprocating coal feeder (14) and prevent coal from falling from the gap between the coal blocking plate (11) and the belt of the belt conveyor (15) to the bottom of the reciprocating coal feeder (14) during the left and right movement of the reciprocating coal feeder (14).

2. The anti-coal spillage system at the junction of a reciprocating coal feeder and a belt conveyor according to claim 1, characterized in that, Also includes: The fixed bracket (13) is "L" shaped. Its horizontal section is fixedly connected to the upper side of the coal retaining bearing plate (11). Its horizontal section spans the belt conveyor (15). Its lower end of the vertical section is fixedly connected to the longitudinal beam of the belt conveyor, thereby fixing the coal retaining bearing plate (11).

3. The anti-coal spillage system at the junction of a reciprocating coal feeder and a belt conveyor according to claim 1, characterized in that, The connecting coal-blocking soft plate (10) is sheet-shaped and has an area larger than that of the coal-blocking bearing plate (11).

4. The anti-coal spillage system at the junction of a reciprocating coal feeder and a belt conveyor according to claim 1, characterized in that, The distance between the coal-blocking bearing plate (11) and the connecting coal-blocking flexible plate (10) is a second predetermined distance.

Images