Coal blockage preventing device for raw coal hopper

Abstract

The utility model discloses a coal blocking prevention device for a raw coal hopper, which relates to the technical field of raw coal hopper blocking prevention and comprises a coal hopper, a rotating ring is rotatably arranged at the top end in the coal hopper in a limited manner, a plurality of arc-shaped plates are detachably mounted on the inner side of the rotating ring around the axis of the coal hopper, and cutters are fixedly connected to the upper end surfaces of the arc-shaped plates; a supporting base is fixedly installed on the inner wall of the coal bucket, a double-shaft motor is fixedly installed on the supporting base, a limiting base is fixedly connected to an output shaft at one end of the double-shaft motor, and the limiting base is connected with the arc-shaped plates in a clamped mode. The double-shaft motor drives the limiting base and the spiral conveying rod to rotate synchronously, and the limiting base drives the rotating ring and the arc-shaped plate to operate. After raw coal enters from the coal hopper, the cutter on the arc-shaped plate cuts the raw coal, and the particle size is reduced. Rotation of the arc-shaped plate and the guiding effect of the spiral conveying rod enable raw coal to continuously flow, meanwhile, the fan blows high-speed airflow to the inner wall of the coal bucket through the air conveying ring and the air guide pipe, the raw coal is always kept in a flowing state, and the hardening phenomenon is avoided.

Description

Technical Field

[0001] This utility model relates to the field of raw coal hopper anti-blocking technology, and in particular to a raw coal hopper anti-blocking coal device. Background Technology

[0002] Coal hopper blockage is a common problem during coal transportation and storage, especially in conditions of high humidity or fine coal dust. Coal dust easily adheres to the inner wall of the hopper, leading to poor material discharge or even complete blockage. This not only affects production efficiency but can also cause equipment malfunctions and safety accidents.

[0003] Traditional anti-clogging methods mainly rely on manual cleaning or mechanical vibration, but their effectiveness is limited and their cost is high. A coal hopper anti-clogging device disclosed in Chinese patent CN215708775U includes an anti-clogging device installed on the outer wall of the coal hopper. This existing device uses a drive motor to rotate a drive rod. This rotational motion, in turn, causes a scraper to move in a circular motion, and the scraper effectively stirs the raw coal accumulated inside the coal hopper with its edge.

[0004] The existing coal hopper anti-clogging devices described above use scraper agitation to treat the raw coal accumulated inside the hopper. While this can alleviate the clogging problem to some extent, it still has significant shortcomings. Specifically, the device only activates passively when the hopper becomes clogged, temporarily restoring coal flow through mechanical agitation of the scrapers, and cannot achieve a continuous, active flow of raw coal. This intermittent operation mode results in poor flowability inside the hopper and fails to effectively prevent raw coal caking. Furthermore, the scraper agitation range and force are limited, making it difficult to cover all corners of the hopper, easily leading to localized accumulation and further affecting the uniform flow of coal. Overall, the design of the existing devices lacks initiative and comprehensiveness, failing to fundamentally solve the problems of coal hopper clogging and raw coal caking, and urgently needs optimization and improvement to achieve more efficient and stable operation.

[0005] To address the aforementioned problems, this utility model proposes a coal hopper anti-blocking device. Utility Model Content

[0006] To address the problems existing in the background technology, this utility model proposes a coal hopper anti-blocking device.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a coal hopper anti-blocking device, comprising a coal hopper, a rotating ring rotatably limited at the top of the inner side of the coal hopper, and multiple arc-shaped plates detachably installed on the inner side of the rotating ring around the axis of the coal hopper, each arc-shaped plate having a cutter fixedly connected to its upper end face; a support base is fixedly installed on the inner wall of the coal hopper, and a dual-axis motor is fixedly installed on the support base, with a limit seat fixedly connected to one output shaft of the dual-axis motor, the limit seat and the arc-shaped plates being engaged and connected, and a spiral conveying rod fixedly connected to the other output shaft of the dual-axis motor; a purging assembly is provided on the inner wall of the coal hopper corresponding to the outer side of the arc-shaped plates.

[0008] The present invention is further configured such that an annular limiting groove is provided at the top of the inner wall of the coal hopper, and a rotating ring is rotatably installed inside the annular limiting groove.

[0009] The present invention is further configured such that the top end of the arc-shaped plate is bolted to the rotating ring by a limiting bolt; a slot is provided on the outer side of the limiting seat corresponding to the position of the arc-shaped plate, and the bottom end of the arc-shaped plate is inserted into the slot.

[0010] The present invention is further configured such that a conical block is fixedly installed on the upper end surface of the limiting seat.

[0011] The present invention is further configured such that an umbrella-shaped protective cover is fixedly installed on the upper output shaft of the dual-axis motor, and the outer diameter of the umbrella-shaped protective cover is larger than the outer diameter of the dual-axis motor.

[0012] The present invention is further configured such that a support plate is fixedly installed at the bottom of the inner wall of the coal hopper, and the support plate is rotatably connected to the bottom of the screw conveyor rod.

[0013] The present invention is further configured such that the purging assembly includes an air conveying ring, an air guide pipe, a blower, and an annular limiting groove. The air conveying ring is fixedly installed on the inner wall of the coal hopper. Multiple air guide pipes are uniformly fixed to the bottom end of the air conveying ring around the axis of the coal hopper. A blower is fixedly installed on the outer wall of the coal hopper. The output end of the blower is connected to the air conveying ring. A heater is installed between the output end of the blower and the air conveying ring.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This coal hopper anti-blocking device consists of an arc-shaped plate, a cutter, a support base, a dual-shaft motor, a limit seat, a spiral conveyor, an air conveying ring, an air guide pipe, and a blower. The dual-shaft motor drives the limit seat and the spiral conveyor to rotate synchronously, which in turn drives the rotating ring and the arc-shaped plate. After the raw coal enters the hopper, the cutter on the arc-shaped plate cuts it, reducing particle size. The rotation of the arc-shaped plate and the guiding action of the spiral conveyor keep the raw coal flowing continuously. Simultaneously, the blower blows high-speed airflow through the air conveying ring and air guide pipe to the inner wall of the hopper, preventing the raw coal from sticking together and accelerating its descent. This keeps the raw coal in a constant state of flow, preventing caking. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of a partial cross-sectional structure of the present invention.

[0020] Reference numerals in the attached diagram: 1. Coal hopper; 2. Rotating ring; 3. Arc plate; 4. Cutter; 5. Support base; 6. Dual-shaft motor; 7. Limiting seat; 8. Spiral conveyor rod; 9. Limiting bolt; 10. Heater; 11. Conical block; 12. Umbrella-shaped protective cover; 13. Support plate; 14. Gas conveying ring; 15. Gas guide pipe; 16. Fan; 17. Annular limiting groove. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0023] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0024] Please see Figure 1-3 This utility model provides a technical solution: a coal hopper anti-blocking device, including a coal hopper 1, with a rotating ring 2 rotatably positioned at the top of the inner wall of the coal hopper 1. Specifically, an annular limiting groove 17 is provided at the top of the inner wall of the coal hopper 1, and the rotating ring 2 is rotatably installed inside the annular limiting groove 17.

[0025] Multiple arc-shaped plates 3 are detachably installed on the inner side of the rotating ring 2 around the axis of the coal hopper 1. Each arc-shaped plate 3 has a cutter 4 fixedly attached to its upper surface. A support base 5 is fixedly installed on the inner wall of the coal hopper 1, and a dual-axis motor 6 is fixedly installed on the support base 5. A limit seat 7 is fixedly connected to one output shaft of the dual-axis motor 6, and the limit seat 7 is engaged with the arc-shaped plates 3. A screw conveyor rod 8 is fixedly connected to the other output shaft of the dual-axis motor 6. A support plate 13 is fixedly installed at the bottom of the inner wall of the coal hopper 1, and the support plate 13 is rotatably connected to the bottom of the screw conveyor rod 8. The screw conveyor rod 8 guides and conveys the raw coal, ensuring that the raw coal falls evenly and avoids accumulation.

[0026] A purging assembly is installed on the inner wall of the coal hopper 1, corresponding to the outer side of the arc-shaped plate 3. The purging assembly includes an air conveying ring 14, air guide pipes 15, a blower 16, and an annular limiting groove 17. The air conveying ring 14 is fixedly installed on the inner wall of the coal hopper 1. Multiple air guide pipes 15 are evenly fixed to the bottom end of the air conveying ring 14 around the axis of the coal hopper 1. The blower 16 is fixedly installed on the outer wall of the coal hopper 1, and its output end is connected to the air conveying ring 14. A protective cover is fixedly installed on the outer wall of the coal hopper 1, corresponding to the outer side of the blower 16, to protect the blower 16. This allows the blower 16 to operate normally during the rainy season and in inclement weather.

[0027] In this embodiment of the invention, a heater 10 is installed between the output end of the blower 16 and the air conveying ring 14. When the moisture content of the raw coal is high during the rainy season, the raw coal is more likely to stick to the inner wall of the coal hopper 1. When the heater 10 is activated, it heats the air output by the blower 16, so that the air blown by the air guide pipe 15 to the inner wall of the coal hopper 1 is hot air. The hot air can effectively prevent the raw coal from sticking to the inner wall of the coal hopper 1 due to high humidity during the rainy season.

[0028] The top of the arc-shaped plate 3 is bolted to the rotating ring 2 via a limiting bolt 9. A slot is provided on the outer side of the limiting seat 7 corresponding to the position of the arc-shaped plate 3, and the bottom end of the arc-shaped plate 3 engages with the slot. The arc-shaped plate 3 can be removed from the limiting seat 7 by unscrewing the limiting bolt 9. The number and spacing of the arc-shaped plates 3 can be adjusted using the limiting bolt 9 to accommodate raw coal of different particle sizes.

[0029] In this embodiment of the invention, a conical block 11 is fixedly installed on the upper end face of the limiting seat 7. The conical block 11 can prevent raw coal from accumulating on the limiting seat 7.

[0030] In this embodiment of the invention: an umbrella-shaped protective cover 12 is fixedly installed on the upper output shaft of the dual-shaft motor 6. The outer diameter of the umbrella-shaped protective cover 12 is larger than the outer diameter of the dual-shaft motor 6. The umbrella-shaped protective cover 12 can prevent raw coal from entering the interior of the dual-shaft motor 6, thus extending the service life of the motor.

[0031] The coal feeder, the dual-shaft motor 6, and the blower 16 are controlled in parallel via a control circuit, allowing them to start and stop synchronously. The circuit connections are all simple series and parallel connections; there are no innovative aspects to the circuit connections, and those skilled in the art can easily implement them. This is existing technology and will not be elaborated further.

[0032] Working principle:

[0033] During operation, after the coal feeder starts, the dual-shaft motor 6 and the blower 16 run synchronously. The output shafts at both ends of the dual-shaft motor 6 drive the limit seat 7 and the screw conveyor 8 to rotate synchronously. The rotation of the limit seat 7 drives the rotating ring 2 to rotate synchronously through the arc plate 3. Raw coal enters the coal hopper from above. The operator can adjust the number and spacing of the arc plates 3 in advance using the limit bolts 9 to accommodate raw coal of different particle sizes. When the raw coal falls into the multiple arc plates 3, the rotation of the arc plates 3 drives the cutter 4 on them to rotate synchronously. The cutter 4 cuts the raw coal when it collides with it, thereby reducing the volume of the raw coal particles and significantly reducing the risk of blockage.

[0034] Raw coal flows downwards through the gaps between multiple arc-shaped plates 3, and is then guided and conveyed by the screw conveyor 8. Simultaneously, after the blower 16 starts, it blows a high-speed airflow towards the inner wall of the coal hopper 1 through the air conveying ring 14 and the air guide pipe 15, accelerating the descent of the raw coal and effectively preventing it from sticking to the inner wall of the hopper. Through the swinging motion of the arc-shaped plates 3, the guidance of the screw conveyor 8, and the blowing action of the blower 16, the raw coal remains in a continuously activated flow state, preventing caking.

[0035] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A coal bunker anti-blocking device for raw coal, comprising a coal bunker (1), characterized in that: The inner top end of the coal hopper (1) is provided with a rotating ring (2), the inner side of the rotating ring (2) is detachably installed with a plurality of arc-shaped plates (3) around the axis of the coal hopper (1), the upper end surface of each arc-shaped plate (3) is fixedly connected with a cutter (4); the inner wall of the coal hopper (1) is fixedly installed with a support seat (5), the support seat (5) is fixedly installed with a double-shaft motor (6), the one end output shaft of the double-shaft motor (6) is fixedly connected with a limiting seat (7), the limiting seat (7) is connected with the arc-shaped plate (3), the other end output shaft of the double-shaft motor (6) is fixedly connected with a spiral conveying rod (8); the inner wall of the coal hopper (1) is provided with a blowing assembly corresponding to the outer side of the arc-shaped plate (3).

2. The coal bunker anti-blocking device according to claim 1, characterized in that: The inner wall of the coal hopper (1) is provided with an annular limiting groove (17) at the top end, and the rotating ring (2) is rotatably installed in the annular limiting groove (17).

3. The coal bunker anti-blocking device according to claim 1, characterized in that: The top end of the arc-shaped plate (3) is bolted with the rotating ring (2) through a limiting bolt (9); the outer side of the limiting seat (7) is provided with a clamping groove corresponding to the position of the arc-shaped plate (3), and the bottom end of the arc-shaped plate (3) is inserted and matched with the clamping groove.

4. The coal bunker anti-blocking device according to claim 1, characterized in that: The upper end surface of the limiting seat (7) is fixedly installed with a conical block (11).

5. The coal bunker anti-blocking device according to claim 1, characterized in that: The upper end output shaft of the double-shaft motor (6) is fixedly installed with an umbrella-shaped protective cover (12), and the outer diameter of the umbrella-shaped protective cover (12) is greater than the outer diameter of the double-shaft motor (6).

6. The coal bunker anti-blocking device according to claim 1, characterized in that: The inner wall of the coal hopper (1) is fixedly installed with a support disc (13), and the bottom end of the spiral conveying rod (8) is rotatably connected with the support disc (13).

7. The coal bunker anti-blocking device according to claim 1, characterized in that: The blowing assembly comprises a gas conveying ring (14), a gas guide pipe (15), a fan (16) and an annular limiting groove (17), the gas conveying ring (14) is fixedly installed on the inner wall of the coal hopper (1), the bottom end of the gas conveying ring (14) is uniformly fixedly connected with a plurality of gas guide pipes (15) around the axis of the coal hopper (1), the outer wall of the coal hopper (1) is fixedly installed with the fan (16), the output end of the fan (16) is communicated with the gas conveying ring (14), and the output end of the fan (16) is installed with a heater (10) between the gas conveying ring (14).

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