A clean coal car system

Abstract

The present application belongs to the technical field of coal mine dust prevention. It relates to a kind of coal suction car clean deslagging system, including flat car, cloth cinder conveyor belt, bulk machine, rotating mechanism, pitch and inclination adjusting mechanism, air extraction passage, dust extraction pipe, dust remover, dust remover fan and position sensor. Cloth cinder conveyor belt is connected with coal suction car discharge port. Bulk machine is located downstream of cloth cinder conveyor belt, and is provided with telescopic inner and outer sleeve joint type telescopic cylinder. Air extraction passage is annularly arranged in the gap between inner and outer sleeves of telescopic cylinder, and is communicated with dust remover installed at the rear of flat car through dust extraction pipe. Rotating mechanism is arranged at the connection between cloth cinder conveyor belt and bulk machine, so that the two can rotate around vertical shaft as a whole. Pitch and inclination adjusting mechanism is connected with the upper part of bulk machine, and is used for adjusting the pitch and inclination angle of telescopic cylinder. Position sensor is installed at the bottom of telescopic cylinder, and is used for detecting unloading height and automatically stopping material falling. The system realizes close-range unloading of coal cinder through rotatable, pitchable and telescopic bulk machine, and uses peripheral negative pressure suction to remove dust.

Description

Technical Field

[0001] This invention belongs to the field of coal mine dust control technology and relates to a coal suction truck cleaning and slag removal system. Background Technology

[0002] In the coal mining and transportation sector, coal suction trucks are crucial equipment, primarily used for collecting and transporting coal slag from underground or surface coal mines. However, existing coal suction truck slag removal systems mainly rely on scraper conveyors and ventilation ducts for slag removal, a traditional method with significant drawbacks. Specifically, during the slag transport process, the scraper conveyor mechanically pushes the slag to the ventilation duct inlet, where it is then discharged by airflow. While simple, this method results in repeated collisions and friction of the slag within the scraper conveyor and ventilation duct, causing the slag particles to break and generating substantial amounts of dust. This dust disperses with the airflow during slag removal, making it difficult to control and causing severe environmental pollution. Especially in enclosed or semi-enclosed work areas, such as underground coal mines or surface storage yards, this dust dispersion not only affects air quality but can also trigger respiratory illnesses, endangering the health of operators. Furthermore, existing slag removal systems lack effective dust removal mechanisms, relying solely on natural settling or simple filtration, which cannot completely capture fine dust particles, leading to persistent environmental pollution problems.

[0003] Further analysis reveals that the existing baghouse feeding method is one of the main causes of dust problems. During baghouse feeding, coal slag falls freely from a height into the bag or transport container. The impact force is high, causing the coal slag to break up and generate a large amount of dust. This impact not only increases the amount of dust generated but also makes the dust particles finer, making them easier to suspend and disperse in the air. In existing technologies, although some systems attempt to introduce simple ventilation ducts to guide airflow, the design of these ducts often fails to create sufficient negative pressure to suppress dust escape, causing dust to disperse outwards during the slag discharge process. Furthermore, existing slag discharge systems typically dump coal slag directly from a high position onto the ground stockpile or transport vehicles during unloading, further exacerbating the dust problem caused by the impact. When transport vehicles receive coal slag, if the unloading height is too high, the kinetic energy of the coal slag increases, the collision becomes more violent, and the amount of dust generated increases accordingly. Simultaneously, the lack of a mechanism for real-time adjustment of the unloading height makes the system unable to adapt to the height differences of different transport vehicles, resulting in inaccurate unloading processes and increased difficulty in dust control. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to solve the above problems and provide a coal suction truck cleaning and slag removal system.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A coal suction car cleaning and slag removal system includes a ballast conveyor belt, a dust extraction pipe, a flat car, a dust collector, a bulk loader, an air extraction channel, and a dust collector fan; The ballast conveyor belt is located at the front of the flatcar and is connected to the discharge port of the coal suction car. It is used to receive the coal slag falling from the coal suction car and transport it downstream. The bulk loader is located at the downstream end of the ballast conveyor belt and is connected to the ballast conveyor belt through the discharge port. The bulk loader includes a telescopic cylinder, which is used to realize the automatic telescopic discharge of coal slag and reduce the discharge height to reduce impact dust. The exhaust channel is arranged between the inner and outer cylinders of the bulk loader's telescopic cylinder and is connected to the dust extraction pipe. It is used to collect dust generated during the discharge process by negative pressure suction. One end of the dust extraction pipe is connected to the exhaust channel, and the other end is connected to the dust collector. It is located on the periphery of the bulk loader and is used to transmit dust-laden airflow to the dust collector for purification. The dust collector is installed at the rear of the flatcar and connected to the dust extraction pipe and the dust collector fan. It is used to filter and purify the dust-laden airflow and ensure that the exhaust airflow is clean. The dust collector fan is integrated inside the dust collector and is used to generate suction negative pressure and drive the airflow to form a negative pressure around the bulk loading machine to prevent dust from escaping.

[0006] Furthermore, it also includes a rotating mechanism, which is mounted on a flatcar at the connection between the ballast conveyor belt and the bulk loader, connecting the ballast conveyor belt and the bulk loader, and is used to drive the bulk loader to rotate around the axis to achieve horizontal adjustment of the unloading position.

[0007] Furthermore, it also includes a pitch adjustment mechanism, which is connected to the bottom of the ballast conveyor belt and works in conjunction with the rotation mechanism to adjust the pitch angle of the bulk loader. The adjustment is made precisely according to the unloading height to ensure that the bulk loader is aligned with the unloading position.

[0008] Furthermore, a discharge port is fixedly provided at the downstream end of the ballast conveyor belt, and the bulk loader is fixedly hoisted below the discharge port to form a slag conveying channel.

[0009] Furthermore, one end of the pitch adjustment mechanism is connected to the rotating mechanism, and the other end is connected to the bottom of the ballast conveyor belt, rotating together with the rotating mechanism.

[0010] Furthermore, it also includes a position sensor, which is installed at the bottom of the bulk loader's telescopic drum and electrically connected to the control system. The position sensor is used to monitor the unloading height. When the set value is reached, it automatically detects the slag accumulation height and triggers a stop unloading signal to prevent slag from overflowing.

[0011] Furthermore, the flatcar is located on a track and follows the coal suction car, serving as the mobile carrier of the system.

[0012] Furthermore, the air extraction channel is embedded in the gap between the inner and outer cylinders of the bulk material handling machine's telescopic cylinder and is sealed to one end of the dust extraction pipe.

[0013] The beneficial effects of this invention are as follows: The coal suction truck slag removal system provided by this invention significantly reduces dust generation and diffusion during coal slag discharge by introducing an automatically retractable bulk loader and an integrated dust collector. Compared with existing technologies, it has obvious environmental and technological advantages. Specifically, the system uses a retractable cylinder of the bulk loader to achieve near-height discharge, with the coal slag falling into the transport vehicle from a low position, reducing the impact force of falling objects from a height and effectively avoiding the dust stirring problem caused by impact in existing baghouse feeding methods. At the same time, the suction negative pressure generated by the dust collector fan forms a negative pressure zone around the bulk loader, preventing dust from moving outward. The purification efficiency can reach over 95%, ensuring that the pollution of the surrounding environment during the slag removal process is minimized.

[0014] In terms of operational efficiency, the system is equipped with a tilt adjustment mechanism and a rotation mechanism, enabling the bulk loader to flexibly adjust its position and angle to adapt to the height and position requirements of different transport vehicles. This reduces unloading time by approximately 30%, minimizes manual intervention, and improves operational safety. Automatic control via position sensors further ensures unloading accuracy; the system automatically stops unloading when the slag accumulates to a set height, preventing overflow and additional dust generation. This automation stems from the connection between the sensors and the control system, achieving precise feedback control.

[0015] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0016] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the clean slag removal system of the coal suction truck in this invention.

[0017] Reference numerals: 1-Batter conveyor belt; 2-Dust extraction pipe; 3-Flatcar; 4-Dust collector; 5-Bulk loader; 6-Pitch adjustment mechanism; 7-Rotation mechanism; 8-Extraction channel; 9-Position sensor; 10-Dust collector fan. Detailed Implementation

[0018] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0019] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0020] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention 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. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0021] Example 1 like Figure 1 As shown, the present invention provides a coal suction car cleaning and slag removal system, including a flat car 3, a ballast conveyor belt 1, a bulk loader 5, a rotating mechanism 7, a pitch adjustment mechanism 6, an air extraction channel 8, a dust extraction pipe 2, a dust collector 4, a dust collector fan 10, and a position sensor 9.

[0022] The flatcar 3 is located on the track and moves synchronously with the coal suction car, serving as the mobile carrier of the entire clean slag removal system. The ballast conveyor belt 1 is fixedly installed at the front of the flatcar 3, with its feed end connected to the discharge port of the coal suction car. It is used to smoothly receive the coal slag unloaded by the coal suction car and to transport the coal slag downstream through continuous operation.

[0023] The bulk loader 5 is located at the downstream end of the ballast conveyor belt 1 and is directly connected to the ballast conveyor belt 1 through the discharge port. The bulk loader 5 includes an automatically retractable telescopic cylinder. The telescopic cylinder adopts an inner and outer cylinder sleeve structure. The inner cylinder can move up and down inside the outer cylinder to achieve near-height discharge of coal slag and greatly reduce the impact of the discharge drop.

[0024] The exhaust channel 8 is arranged in a ring within the gap between the inner and outer cylinders of the telescopic cylinder of the bulk loader 5, forming a closed suction chamber. The exhaust channel 8 is connected to the dust collector 4 through the dust extraction pipe 2. The dust collector 4 is fixedly installed at the rear of the flat car 3. The dust collector fan 10 is integrated inside the dust collector 4 and directly connected to the dust extraction pipe 2. When the dust collector fan 10 is running, a strong negative pressure is formed around and at the bottom of the telescopic cylinder of the bulk loader 5, which draws the dust generated during the coal slag discharge process into the exhaust channel 8, and then transports it to the dust collector 4 through the dust extraction pipe 2 for efficient filtration and purification.

[0025] The rotating mechanism 7 is installed on the flat car 3 and is located at the connection between the ballast conveyor belt 1 and the bulk loader 5. It is fixedly connected to the frame of the ballast conveyor belt 1 and the upper part of the bulk loader 5 through the slewing bearing, so that the ballast conveyor belt 1 and the bulk loader 5 can rotate 360° around the vertical axis as a whole, realizing a rapid switch from the state of traveling straight with the coal suction car to the unloading state of aligning with the transport vehicle or the ground stockpile.

[0026] The pitch adjustment mechanism 6 is a hydraulic cylinder or electric push rod structure. One end is hinged to the rotating platform of the rotating mechanism 7, and the other end is hinged to the upper outer wall of the bulk loader 5. It is used to precisely adjust the pitch angle of the bulk loader 5 according to the height of the transport vehicle or the stockpile after the bulk loader 5 has rotated to the position, so as to ensure that the bottom of the telescopic cylinder is kept at the closest distance to the unloading point.

[0027] Position sensor 9 is fixedly installed on the outermost bottom of the telescopic drum of bulk loader 5 and electrically connected to the system's electrical control unit. It is used to detect the distance between the bottom of the telescopic drum and the top surface of the coal slag accumulation in real time. When the distance reaches the preset safety value, the telescopic drum is automatically controlled to stop descending and the coal suction car is stopped from dropping material onto the ballast conveyor belt 1 to prevent coal slag from overflowing.

[0028] The system works as follows: The flatcar 3 moves with the coal suction car → When unloading slag is required, the rotating mechanism 7 drives the ballast conveyor belt 1 and the bulk loader 5 to rotate 90° together to align with the transport vehicle → The tilt adjustment mechanism 6 moves, causing the telescopic cylinder of the bulk loader 5 to tilt downwards to align with the car body → The telescopic cylinder automatically descends to the lowest unloading position, and at the same time, the dust collector fan 10 starts, forming a negative pressure around the telescopic cylinder → The coal suction car begins to unload coal slag onto the ballast conveyor belt 1. The coal slag smoothly transitions into the telescopic cylinder of the bulk loader 5 via the conveyor belt and falls into the transport vehicle at a low height → The dust generated during the entire unloading process is immediately drawn into the dust collector 4 by the negative pressure for purification → When the position sensor 9 detects that the coal slag has reached the preset height, it automatically stops unloading and controls the telescopic cylinder to lift and reset → The rotating mechanism 7 rotates the bulk loader 5 back to the straight position, and the system resumes its following state.

[0029] This embodiment, through a rotatable, tiltable, and retractable bulk loading machine structure combined with a negative pressure dust removal system on the periphery of the telescopic cylinder driven by the dust collector fan 10, completely solves the problem of large dust and serious pollution in traditional high-level slag unloading, and realizes fully automated control of the entire process of clean, low-dust, and precise loading of coal slag.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A coal suction truck cleaning and slag removal system, characterized in that: This includes ballast conveyor belts, dust extraction pipes, flat cars, dust collectors, bulk loaders, exhaust channels, and dust collector fans; The ballast conveyor belt is located at the front of the flatcar and is connected to the discharge port of the coal suction car. It is used to receive the coal slag falling from the coal suction car and transport it downstream. The bulk loader is located at the downstream end of the ballast conveyor belt and is connected to the ballast conveyor belt through the discharge port. The bulk loader includes a telescopic cylinder, which is used to realize the automatic telescopic discharge of coal slag and reduce the discharge height to reduce impact dust. The exhaust channel is arranged between the inner and outer cylinders of the bulk loader's telescopic cylinder and is connected to the dust extraction pipe. It is used to collect dust generated during the discharge process by negative pressure suction. One end of the dust extraction pipe is connected to the exhaust channel, and the other end is connected to the dust collector. It is located on the periphery of the bulk loader and is used to transmit dust-laden airflow to the dust collector for purification. The dust collector is installed at the rear of the flatcar and connected to the dust extraction pipe and the dust collector fan. It is used to filter and purify the dust-laden airflow and ensure that the exhaust airflow is clean. The dust collector fan is integrated inside the dust collector and is used to generate suction negative pressure and drive the airflow to form a negative pressure around the bulk loading machine to prevent dust from escaping. It also includes a rotating mechanism, which is mounted on a flatcar and located at the connection between the ballast conveyor belt and the bulk loader. The rotating mechanism connects the ballast conveyor belt and the bulk loader and is used to drive the bulk loader to rotate around the axis to achieve horizontal adjustment of the unloading position. It also includes a pitch adjustment mechanism, which is connected to the bottom of the ballast conveyor belt and works in conjunction with the rotating mechanism to adjust the pitch angle of the bulk loader. The adjustment is made precisely according to the unloading height to ensure that the bulk loader is aligned with the unloading position. The downstream end of the ballast conveyor belt is fixedly provided with a discharge port, and the bulk loader is fixedly suspended below the discharge port to form a slag conveying channel. One end of the pitch adjustment mechanism is connected to the rotating mechanism, and the other end is connected to the bottom of the ballast conveyor belt, rotating together with the rotating mechanism.

2. The coal suction truck cleaning and slag removal system according to claim 1, characterized in that, It also includes a position sensor, which is installed at the bottom of the bulk loader's telescopic drum and electrically connected to the control system. The position sensor is used to monitor the unloading height. When the set value is reached, it automatically detects the height of the coal slag accumulation and triggers a stop unloading signal to prevent the coal slag from overflowing.

3. The coal suction truck cleaning and slag removal system according to claim 1, characterized in that, The flatcar is located on the track and moves along with the coal suction car, serving as the mobile carrier of the system.

4. The coal suction truck cleaning and slag removal system according to claim 1, characterized in that, The air extraction channel is embedded in the gap between the inner and outer cylinders of the bulk material handling machine's telescopic cylinder and is sealed to one end of the dust extraction pipe.

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