Cleaning and deslagging system of coal suction vehicle

Abstract

The invention belongs to the technical field of coal mine dust prevention. The coal suction car cleaning and deslagging system comprises a flat car, a ballast distribution conveying belt, a bulk machine, a rotating mechanism, a pitching adjusting mechanism, an air exhaust channel, a dust exhaust pipe, a dust remover, a dust remover fan and a position sensor. The ballast distribution conveying belt is in butt joint with a discharge port of the coal suction vehicle; the bulk machine is positioned at the downstream of the ballast distribution conveying belt and is provided with an inner and outer cylinder sleeve type telescopic cylinder capable of automatically stretching and retracting; the air exhaust channel is annularly arranged in a gap between inner and outer cylinders of the telescopic cylinder and is communicated with a dust remover mounted at the rear part of the flatcar through a dust exhaust pipe; the rotating mechanism is arranged at the joint of the ballast distributing conveying belt and the bulk machine, so that the ballast distributing conveying belt and the bulk machine can integrally rotate around a vertical shaft; the pitching adjusting mechanism is connected with the upper portion of the bulk machine and used for adjusting the pitching angle of the telescopic cylinder. The position sensor is installed at the bottom of the telescopic cylinder and used for detecting the discharging height and automatically stopping discharging. According to the system, short-distance discharging of coal cinder is achieved through the rotatable, pitching and telescopic bulk loader, and meanwhile dust is sucked and removed through negative pressure on the periphery of the telescopic cylinder.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of coal mine dust prevention and relates to a clean coal sucking vehicle slag discharge system. BACKGROUND

[0002] In the field of coal mining and transportation, coal sucking vehicles serve as an important equipment, mainly used for collecting and transporting coal slag from underground coal mines or the ground. However, the existing coal sucking vehicle slag discharge system mainly relies on a scraper and a wind tube for slag discharge operation. This traditional slag discharge method has significant defects. Specifically, during the transportation of coal slag, the scraper pushes the coal slag to the inlet of the wind tube through mechanical scraping, and then the coal slag is discharged by wind power. Although this method is simple, due to the multiple collisions and friction of coal slag in the scraper and wind tube, the coal slag particles are broken and a large amount of dust is generated. These dusts diffuse with the airflow during the slag discharge process and cannot be effectively controlled, thereby causing serious pollution to the surrounding environment. Especially in closed or semi-closed workplaces such as underground coal mines or ground storage yards, this dust diffusion not only affects air quality but also may cause respiratory diseases, endangering the health of operating personnel. At the same time, the existing slag discharge system lacks effective dust removal mechanisms and can only rely on natural sedimentation or simple filtration, which cannot completely capture fine dust particles, resulting in long-term environmental pollution problems.

[0003] Further analysis shows that the existing bag material guiding method is one of the main reasons for the dust problem. During the bag material guiding process, the coal slag falls freely from a high place into the bag or the transportation container, and the impact force is large, causing the coal slag to break and generate a large amount of dust. This impact not only increases the amount of dust generated, but also makes the dust particles smaller and more likely to be suspended and diffused in the air. In the existing technology, although some systems try to introduce a simple wind tube to guide the airflow, the design of the wind tube often cannot form enough negative pressure to suppress dust escape, resulting in dust escaping with the slag discharge process. In addition, the existing slag discharge system usually directly dumps coal slag from a higher position to the ground storage yard or transportation vehicle during unloading, which further aggravates the dust problem caused by impact. When the transportation vehicle receives the coal slag, if the unloading height is too high, the kinetic energy of the coal slag increases, the impact is more intense, and the amount of dust generated increases. At the same time, the lack of real-time adjustment mechanism for unloading height makes the system unable to adapt to the height difference of different transportation vehicles, resulting in inaccurate unloading process and increasing the difficulty of dust control. SUMMARY

[0004] Therefore, the present application aims to solve the above problems and provide a clean coal sucking vehicle slag discharge system.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: A clean coal sucking vehicle slag discharge system, comprising a coal slag conveying belt, a dust extraction pipe, a flat car, a dust collector, a bulk machine, an air extraction channel, and a dust collector fan. The coal dreg conveying belt is located at the front of the flat car and is connected with the discharge port of the coal suction car to receive the coal dregs falling from the coal suction car and to convey the coal dregs to the downstream; The bulk machine is located at the downstream end of the coal dreg conveying belt and is connected with the coal dreg conveying belt through the discharge port. The bulk machine includes an extension cylinder to realize automatic extension and contraction of the coal dregs to reduce the unloading height and to reduce the impact dust. The air extraction channel is arranged between the inner and outer cylinders of the bulk machine extension cylinder and is connected with the dust extraction pipe to extract the dust generated in the discharging process by negative pressure. One end of the dust extraction pipe is connected with the air extraction channel, and the other end is connected with the dust remover located at the periphery of the bulk machine to transmit the dust-containing airflow to the dust remover for purification. The dust remover is installed at the rear of the flat car and is connected with the dust extraction pipe and the dust remover fan to filter and purify the extracted dust-containing airflow to ensure the cleanliness of the discharging airflow. The dust remover fan is integrated in the dust remover to generate a negative pressure for extraction and to drive the airflow to flow, forming a negative pressure around the bulk machine to prevent dust from escaping.

[0006] Further, a rotating mechanism is installed on the flat car at the connection between the coal dreg conveying belt and the bulk machine to connect the coal dreg conveying belt and the bulk machine to drive the bulk machine to rotate around the axis to adjust the horizontal position of the discharging position.

[0007] Further, an inclination adjusting mechanism is connected at the bottom of the coal dreg conveying belt and cooperates with the rotating mechanism to adjust the inclination angle of the bulk machine to accurately adjust the discharging height to ensure that the bulk machine is aligned with the discharging position.

[0008] Further, the downstream end of the coal dreg conveying belt is fixedly provided with a discharge port, and the bulk machine is fixedly hoisted below the discharge port to form a coal dreg conveying channel.

[0009] Further, one end of the inclination adjusting mechanism is connected to the rotating mechanism, and the other end is connected to the bottom of the coal dreg conveying belt to rotate with the rotating mechanism.

[0010] Further, a position sensor is installed at the bottom of the bulk machine extension cylinder and is electrically connected with the control system to monitor the discharging height and to automatically detect the coal dreg accumulation height and trigger a stop discharging signal when the set value is reached to prevent the coal dregs from overflowing.

[0011] Further, the flat car is located on the track and follows the coal suction car to move as a mobile carrier of the system.

[0012] Further, the air extraction channel is embedded in the gap between the inner and outer cylinders of the bulk machine extension cylinder and is sealingly connected with one end of the dust extraction pipe.

[0013] The beneficial effects of the present application are: The coal suction vehicle clean residue discharging system provided by the present application significantly reduces dust generation and diffusion during the coal residue discharging process by introducing an automatically extendable bulk machine and an integrated dust collector, and has obvious environmental protection and technical advantages compared with the prior art. Specifically, the system uses the bulk machine extension cylinder to realize near-height discharge, and the coal residue falls into the transport vehicle from a low position, reducing the impact force of the high-altitude falling body and effectively avoiding the problem of dust lifting caused by impact in the existing bag material guiding mode. At the same time, the suction negative pressure generated by the dust collector fan forms a negative pressure zone around the bulk machine, preventing dust from moving outward, and the purification efficiency can reach more than 95%, ensuring that the pollution to the surrounding environment during the residue discharging process is minimized.

[0014] In terms of operation efficiency, the system is equipped with a tilt adjusting mechanism and a rotating mechanism, which enables the bulk machine to flexibly adjust the position and angle, adapt to the height and position requirements of different transport vehicles, shorten the unloading time by about 30%, reduce manual intervention, and improve the operation safety. The automatic control of the position sensor further ensures the unloading accuracy, and automatically stops the material falling when the coal residue accumulation reaches the set height, avoiding overflow and additional dust generation. This automatic feature is derived from the connection relationship between the sensor and the control system, realizing precise feedback control.

[0015] Other advantages, objects, and features of the present application will be in part apparent and in part pointed out hereinafter in the specification, and will be observed in the practice of the application. The objects and other advantages of the present application can be realized and attained by the below description. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to make the purpose, technical scheme and advantages of the present application clearer, the preferred detailed description of the present application will be combined with the drawings as follows, wherein: Figure 1 The structure diagram of the coal suction vehicle clean residue discharging system in the present application.

[0017] Reference signs: 1-belt type coal residue conveying belt; 2-dust extraction pipe; 3-flat car; 4-dust collector; 5-bulk machine; 6-tilt adjusting mechanism; 7-rotating mechanism; 8-exhaust channel; 9-position sensor; 10-dust collector fan. DETAILED DESCRIPTION

[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 suction channel 8 is annularly arranged in the gap between the inner cylinder and the outer cylinder of the telescopic cylinder of the bulk machine 5, forming a closed suction cavity, and is communicated with the dust collector 4 through the dust suction pipe 2. The dust collector 4 is fixedly installed at the rear of the flat car 3, and the dust collector fan 10 is integrally installed in the dust collector 4 and is directly connected with the dust suction pipe 2. When the dust collector fan 10 operates, a strong negative pressure is formed around and at the bottom of the telescopic cylinder of the bulk machine 5, so that the dust generated during the discharge of the coal cinder is sucked into the suction channel 8 in place, and then is transported to the dust collector 4 through the dust suction pipe 2 for high-efficiency filtration and purification.

[0025] The rotating mechanism 7 is installed on the flat car 3 and is located at the connecting part of the coal cinder conveying belt 1 and the bulk machine 5. The rotating mechanism 7 is fixedly connected with the frame of the coal cinder conveying belt 1 and the upper part of the bulk machine 5 through a rotary support, so that the coal cinder conveying belt 1 and the bulk machine 5 can rotate 360° around a vertical shaft as a whole, and the state of the coal suction car is quickly switched from the straight-ahead state to the unloading state of aligning with the transport vehicle or the ground stockyard.

[0026] The inclination adjusting mechanism 6 is a hydraulic oil cylinder or an electric push rod structure, one end of which 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 machine 5. The inclination adjusting mechanism 6 is used for accurately adjusting the inclination angle of the bulk machine 5 according to the height of the transport vehicle or the stockyard after the bulk machine 5 is rotated to the position, so as to ensure that the bottom of the telescopic cylinder is closest to the unloading point.

[0027] The position sensor 9 is fixedly installed on the outer wall of the bottom of the telescopic cylinder of the bulk machine 5 and is electrically connected with the system electric control unit, and is used for detecting the distance between the bottom of the telescopic cylinder and the top surface of the coal cinder accumulation in real time. When the distance reaches a preset safety value, the telescopic cylinder is automatically stopped from descending and the coal suction car is simultaneously stopped from discharging coal to the coal cinder conveying belt 1, so as to prevent the coal cinder from overflowing.

[0028] The working process of the system is as follows: the flat car 3 walks with the coal suction car→ when the coal cinder needs to be unloaded, the rotating mechanism 7 drives the coal cinder conveying belt 1 and the bulk machine 5 to rotate 90° as a whole to align with the transport vehicle→ the inclination adjusting mechanism 6 acts to make the telescopic cylinder of the bulk machine 5 downwardly inclined to align with the carriage→ the telescopic cylinder is automatically lowered to the lowest unloading position, and at the same time, the dust collector fan 10 is started to form a negative pressure around the telescopic cylinder→ the coal suction car starts to discharge coal cinder to the coal cinder conveying belt 1, and the coal cinder is smoothly transferred into the telescopic cylinder of the bulk machine 5 and is lowly dropped into the transport vehicle→ the dust generated in the whole unloading process is immediately sucked into the dust collector 4 for purification→ when the position sensor 9 detects that the coal cinder reaches a preset height, the discharging is automatically stopped and the telescopic cylinder is controlled to be lifted and reset→ the rotating mechanism 7 rotates the bulk machine 5 back to the straight-ahead position, and the system returns to the walking state.

[0029] The embodiment solves the problem of large dust and serious pollution of traditional high unloading slag by using the rotatable, tiltable and telescopic bulk machine structure matched with the telescopic cylinder peripheral negative pressure dust removal system driven by the dust remover fan 10, and realizes the automatic control of the whole process of clean, low-dust and precise loading of coal slag.

[0030] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions, which should be covered in the scope of the claims of the present application.

Claims

1. A coal car cleaning and de-slugging system characterized by: The coal residue conveying belt, the dust extraction pipe, the flat car, the dust remover, the bulk machine, the air extraction channel, and the dust remover fan are included. The coal residue conveying belt is located at the front of the flat car and is connected with the discharge port of the coal suction car, used for receiving the coal residue falling from the coal suction car and conveying it to the downstream. The bulk machine is located at the downstream end of the coal residue conveying belt and is connected with the coal residue conveying belt through the discharge port. The bulk machine includes an extension cylinder, used for realizing the automatic extension and contraction of the coal residue discharge, reducing the discharge height to reduce the impact dust. The air extraction channel is arranged between the inner and outer cylinders of the bulk machine extension cylinder and is connected with the dust extraction pipe, used for capturing the dust generated in the discharge process through negative pressure suction. One end of the dust extraction pipe is connected with the air extraction channel, and the other end is connected with the dust remover, located at the periphery of the bulk machine, used for transmitting the dust-containing airflow to the dust remover for purification. The dust remover is installed at the rear of the flat car and is connected with the dust extraction pipe and the dust remover fan, used for filtering and purifying the suctioned dust-containing airflow to ensure the cleanliness of the discharge airflow. The dust remover fan is integrated in the dust remover, used for generating suction negative pressure and driving the airflow flow, forming a negative pressure periphery of the bulk machine to prevent dust from escaping.

2. The coal-suction car cleaning and deslagging system of claim 1, wherein, A rotating mechanism is also included, which is installed on the flat car, located at the connection between the coal residue conveying belt and the bulk machine, connected with the coal residue conveying belt and the bulk machine, used for driving the bulk machine to rotate around the axis, realizing the horizontal adjustment of the discharge position.

3. The coal-suction car cleaning and de-slugging system of claim 2, wherein, An inclination adjustment mechanism is also included, which is connected at the bottom of the coal residue conveying belt and cooperates with the rotating mechanism, used for adjusting the inclination angle of the bulk machine, accurately adjusting according to the discharge height to ensure the alignment of the bulk machine to the discharge position.

4. The coal-suction car cleaning and deslagging system of claim 3, wherein, A discharge port is fixed at the downstream end of the coal residue conveying belt, and the bulk machine is fixed and hoisted below the discharge port, forming a coal residue conveying channel.

5. The coal car cleaning and deashing system of claim 3, wherein One end of the inclination adjustment mechanism is connected to the rotating mechanism, and the other end is connected to the bottom of the coal residue conveying belt, rotating with the rotating mechanism.

6. The coal car cleaning and deashing system of claim 1 wherein, A position sensor is also included, which is installed at the bottom of the bulk machine extension cylinder and is electrically connected with the control system, used for monitoring the discharge height. When the set value is reached, the coal residue accumulation height is automatically detected and the stop discharging signal is triggered to avoid coal residue overflow.

7. The coal car cleaning and deashing system of claim 1 wherein, The flat car is located on the track and walks with the coal suction car as the mobile carrier of the system.

8. The coal car cleaning and deashing system of claim 1 wherein, The air extraction channel is embedded in the gap between the inner and outer cylinders of the bulk machine extension cylinder and is sealingly connected with one end of the dust extraction pipe.

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