Air flow purification device of fully-mechanized face air return crossheading

Abstract

The utility model belongs to the technical field of roadway dust removal, and relates to an air flow purification device of a fully-mechanized face air return crossheading, which comprises a frame type component, a lifting component, a lower rotating component, an upper rotating component and a spraying component, the frame type component is used for allowing an operation vehicle to pass through, and the lifting components are arranged on the two sides of the frame type component and used for achieving lifting of an upper structure in the frame type component; a spraying component is arranged in the middle of the upper structure of the frame type component and used for treating dust in an area where a vehicle passes through. The rotating lower part is hinged with one side of the lower structure of the frame type part, and the spraying part is arranged at the upper part of the rotating lower part; the rotating upper part is hinged to the side, close to the rotating lower part, of the upper structure in the frame type part, and a dust catching net is arranged between the rotating upper part and the frame type part. Sufficient passing space is provided for vehicles, obstruction of a traditional dust catching net to traffic is avoided, different roadway heights and environment conditions can be flexibly adapted, and the stability of the treatment effect is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of roadway dust removal technology, and relates to an airflow purification device for the return air roadway of a fully mechanized mining face. Background Technology

[0002] In the coal mining sector, fully mechanized longwall faces (MLTs) have significantly improved coal production efficiency due to their high degree of mechanization and intensive mining operations. However, this efficient mining method has also brought about a serious dust pollution problem. Because of the high dust generation intensity, dust control at fully mechanized longwall faces has become a crucial aspect of ensuring safe production and the health of workers. To address dust pollution at fully mechanized longwall faces, the industry has adopted a series of control measures. Regarding coal mining machine operations, spray dust suppression technology is used, which combines water mist with dust through spraying, causing it to settle. Spray-induced dust-laden airflow control technology utilizes the airflow generated by the spray to change the direction of the dust-laden airflow, achieving dust suppression. There is also coal mining machine controlled dust suppression technology, which reduces dust generation and diffusion by optimizing the operating parameters and control methods of the coal mining machine. In the hydraulic support area, dust collection and guiding devices for the supports and dust-falling guide devices for the hydraulic support side guard plates are installed to guide and collect dust, reducing dust concentration. These measures have effectively solved most of the dust problems to a certain extent, but some dust still enters the return air roadway with the return air flow from the working face, causing dust pollution in the return air roadway.

[0003] To address dust pollution in return air roadways, current methods primarily employ spray dust suppression technology and dust collection nets. In practical applications, spray dust suppression typically requires positioning the spray nozzle at the top of the roadway and using an upwind spraying method to achieve ideal dust reduction. While this method allows for sufficient contact between the water mist and the dust-laden airflow, improving dust suppression efficiency, the large amount of water mist generated by the spray diffuses into the air, severely impacting the visibility of nearby workers and causing significant inconvenience and safety hazards. Dust collection nets, to some extent, avoid the visibility problems associated with spray dust suppression. However, they also have significant drawbacks. Installing dust collection nets in the roadway significantly affects the operation and movement of vehicles, hindering normal vehicle passage and reducing production efficiency. Furthermore, because dust collection nets cannot achieve full cross-section coverage, gaps exist that allow dust leakage, resulting in poor dust collection effectiveness.

[0004] In actual working face production, the aforementioned two dust control measures often remain unused due to their respective shortcomings. This exacerbates dust pollution in the return air roadway of the fully mechanized mining face, threatening not only the health of workers but also potentially causing safety accidents and disrupting normal coal production.

[0005] Based on this, this application proposes an airflow purification device for the return air roadway of a fully mechanized mining face, which aims to effectively control dust pollution in the return air roadway of a fully mechanized mining face, while solving the problems of dust collection nets affecting roadway vehicle operations and spray dust suppression interfering with the visibility of operators. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide an airflow purification device for the return air roadway of a fully mechanized mining face, so as to effectively control dust pollution in the return air roadway of the fully mechanized mining face, and at the same time solve the problems of the impact of dust collection nets on roadway vehicle operations and the interference of spray dust suppression on the visibility of operators.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An airflow purification device for a return air roadway in a fully mechanized mining face includes a frame component, a lifting component, a rotating lower component, a rotating upper component, and a spray component.

[0009] The frame component is used to allow work vehicles to pass through, and the lifting component is located on both sides of the frame component to realize the lifting of the upper structure in the frame component.

[0010] A spraying component is provided in the middle of the upper structure of the frame component for controlling dust in the area where vehicles pass.

[0011] The rotating lower component is hinged to one side of the lower structure of the frame component, and a spraying component is provided on its upper part;

[0012] The rotating upper component is hinged to the upper structure of the frame component on the side near the rotating lower component, and a dust-collecting net is provided in the middle, which rises and falls together with the upper structure of the frame component.

[0013] Furthermore, a movable component is provided at the bottom of the frame component to enable the frame component to move.

[0014] Furthermore, the wheels of the moving component adopt a universal wheel structure to enable the frame component to move in all directions.

[0015] Furthermore, the rotating lower component is hinged to the frame component via a hinge structure, so that the rotating lower component and the frame component can be arranged at different angles.

[0016] Furthermore, the rotating upper component is connected to the frame component via a hinge structure, so that the rotating upper component and the frame component can be arranged at different angles.

[0017] Furthermore, the frame component consists of a lower structure and an upper structure, with a passage for work vehicles to pass through in the middle. The lower structure and the upper structure are connected by a sleeve structure so that the upper structure can move up and down when connected to the lower structure.

[0018] Furthermore, the lifting component is a lifting hydraulic cylinder, with one end connected to the lower structure and the other end connected to the upper structure, to drive the lifting of the upper structure in the frame component.

[0019] Furthermore, the lifting component can adjust the height of the upper structure in the frame component according to the change in the height of the roadway.

[0020] Furthermore, a dust-collecting net is provided in the middle of the rotating lower component for collecting dust.

[0021] The beneficial effects of this utility model are as follows:

[0022] 1. This utility model proposes an airflow purification device for the return air roadway of a fully mechanized mining face, aiming to effectively control dust pollution in the roadway while addressing the adverse effects of traditional dust control measures on vehicle passage and the visibility of workers. Its core lies in its innovative structural design, combining frame components, lifting components, rotating components, spraying components, and moving components to achieve highly efficient dust collection and settling. This design not only significantly improves the dust control effect but also ensures the flexibility and practicality of the device in actual applications, providing a completely new solution for the working environment of the return air roadway.

[0023] 2. The structural design of this device fully considers actual operational needs. The frame-type components provide ample passage space for vehicles, avoiding the obstruction of traffic by traditional dust collection nets; the cooperation between the lifting and rotating components allows the device to flexibly adapt to different tunnel heights and environmental conditions, ensuring the stability of the treatment effect. The spray component settles dust through atomized water flow, which, combined with the dust collection net, further captures suspended particles, thereby significantly improving the air quality in the tunnel. In addition, the moving components adopt a universal wheel design, making it easier to move and adjust the device in the tunnel. This multi-functional combination not only improves the efficiency of dust control but also ensures clear visibility and convenient operation for operators, demonstrating the comprehensive advantages of the technical solution.

[0024] 3. The greatest practicality of this device lies in its optimal impact on the working environment. Compared to traditional methods, it avoids the problems of fogging vision due to dust suppression sprays or interference from fixed facilities with vehicles, thereby improving the safety and comfort of operations in the return air roadway. Simultaneously, the device can automatically adjust its operating status based on the dust concentration in the roadway through an intelligent control system, further enhancing its adaptability and purification efficiency. In summary, this technical solution effectively solves the dust control problem in the return air roadway of a fully mechanized mining face, not only improving environmental quality but also providing a scalable example for dust control in similar scenarios, demonstrating significant practical value and application prospects.

[0025] Other advantages, objectives, and features of this 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 and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:

[0027] Figure 1 This is a schematic diagram of the airflow purification device for a fully mechanized mining face return airway in one embodiment. Figure 1 ;

[0028] Figure 2 This is a schematic diagram of the airflow purification device for a fully mechanized mining face return airway in one embodiment. Figure 2 ;

[0029] Figure 3 This is a schematic diagram of the airflow purification device for a fully mechanized mining face return airway in one embodiment. Figure 3 .

[0030] Reference numerals: 1. Frame component; 2. Lifting component; 3. Rotating lower component; 4. Rotating upper component; 5. Spraying component; 6. Moving component. Detailed Implementation

[0031] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this utility model. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0032] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present 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.

[0033] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, 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 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. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0034] Example 1

[0035] Please see Figures 1 to 3 This embodiment provides an airflow purification device for the return air roadway of a fully mechanized mining face, including a frame component 1, a lifting component 2, a rotating lower component 3, a rotating upper component 4, a spraying component 5, and a moving component 6.

[0036] Structural description:

[0037] The frame component 1 is the main structure of the device, used for the passage of working vehicles. It consists of a lower structure and an upper structure. The lower structure comprises two sets of parallel vertical frames, providing a passage for working vehicles in the middle of the frame component 1. Each of the two sets of parallel frames has a set of moving parts 6 at its bottom. The moving parts 6 employ a caster wheel structure, allowing the frame component 1 to move freely in various directions within the tunnel. The upper structure is a rectangular frame connected to the lower structure via a sleeve structure, enabling it to move up and down on the lower structure to adapt to tunnels of different heights.

[0038] Specifically, the upper structure has four vertically arranged columns at its bottom, and the lower structure has four sleeves that match the four columns. The columns are inserted into the sleeves to form a sleeve structure, so that the upper structure can move up and down when connected to the lower structure.

[0039] The lifting component 2 is a lifting hydraulic cylinder, which is set on both sides of the frame component 1. One end is connected to the lower structure and the other end is connected to the upper structure. The upper structure is lifted and lowered by the extension and retraction of the hydraulic cylinder, thereby adjusting the height of the device to adapt to the changes in the height of the roadway.

[0040] A spraying component 5 is provided in the middle of the upper structure of the frame component 1. The spraying component 5 includes a set of spray nozzles and a water pipe connected to the spray nozzles, which can spray water mist onto the area through which the vehicle passes to settle dust in the air.

[0041] The rotating lower component 3 is hinged to one side of the lower structure of the frame component 1 via a hinge structure, allowing it to rotate around the hinge structure and thus form different angle arrangements with the frame component 1. A dust-collecting net is provided in the middle of the rotating lower component 3 for collecting dust; a spraying component is provided on its upper part to spray water mist onto the dust-collecting net, further enhancing the dust-collecting effect.

[0042] The rotating upper component 4 is connected to one side of the upper structure of the frame component 1 via a hinge structure, and can also rotate around the hinge structure to form different angle arrangements with the frame component 1. A dust-collecting net is provided in the middle of the rotating upper component 4 to collect dust, and it rises and falls together with the upper structure to adapt to changes in the tunnel height.

[0043] In operation, the device is moved to a suitable position in the return airway via the moving component 6. The lifting component 2 adjusts the position of the upper structure according to the roadway height, adapting the device to the roadway environment. The rotating lower component 3 and rotating upper component 4 are adjusted to appropriate angles to accommodate different roadway widths and structures, maximizing dust collection efficiency. The spraying components 5 on the frame component 1 and the rotating lower component 3 simultaneously spray water mist, settling and collecting dust. Operating vehicles can pass through the internal space of the frame component 1 without obstruction.

[0044] This embodiment provides a basic airflow purification device that can effectively control dust in alleyways while ensuring convenient vehicle passage.

[0045] Example 2

[0046] This embodiment is an improvement on embodiment 1, adding automated control functions to enhance the performance and adaptability of the device.

[0047] Similar to Embodiment 1, the airflow purification device in this embodiment includes a frame component 1, a lifting component 2, a rotating lower component 3, a rotating upper component 4, a spray component 5, and a moving component 6, with its basic structure being consistent with Embodiment 1. The frame component 1 consists of a lower structure and an upper structure, connected by a sleeve structure; the moving component 6 adopts a caster wheel structure; the lifting component 2 is a lifting hydraulic cylinder; the spray component 5 is located in the middle of the upper structure and on the rotating lower component 3; the rotating lower component 3 and the rotating upper component 4 are respectively connected to the lower structure and the upper structure through hinge structures, and a dust collection net is provided in the middle between them.

[0048] In this embodiment, the following improved features have been added:

[0049] A dust concentration sensor is installed on the top of the frame component 1 to monitor the wind speed and dust concentration in the tunnel in real time.

[0050] A control system has been added to the device, which is connected to the dust concentration sensor and the spray component 5.

[0051] In operation, the device is moved to a suitable position in the return air duct via the moving component 6. The control system automatically adjusts the spray volume based on data collected by the dust concentration sensor, and the spray component 5 automatically adjusts the spray volume according to real-time dust concentration data to ensure efficient dust control. Operating vehicles can still pass through the internal space of the frame component 1 without being affected.

[0052] Advantages: This embodiment achieves intelligent operation of the device by introducing sensors and a control system, which can automatically adjust the working status according to changes in the tunnel environment, thereby improving purification efficiency and adaptability.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model 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 solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An air flow purification device for a return air gateway of a fully mechanized coal mining face, characterized in that, The frame component is used for passing the working vehicle, the lifting component is arranged on both sides of the frame component and is used for lifting the upper structure in the frame component; A spraying component is arranged in the middle of the upper structure in the frame component and is used for dust control in the vehicle passing area; The rotating lower component is hingedly connected with one side of the lower structure of the frame component and is provided with a spraying component in the upper part thereof; The rotating upper component is hingedly connected with one side of the upper structure in the frame component close to the rotating lower component, is provided with a dust catching net in the middle thereof and is lifted together with the upper structure in the frame component. A moving component is arranged at the bottom of the frame component and is used for moving the frame component.

2. The air stream purifying device according to claim 1, wherein The wheels of the moving component adopt universal wheel structure to realize the movement of the frame component in all directions.

3. The air stream purifying device according to claim 2, wherein The rotating lower component is hingedly connected with the frame component through a loose-leaf structure to form different angle arrangement forms of the rotating lower component and the frame component.

4. The air stream purifying device according to claim 1, wherein The rotating upper component is connected with the frame component through a loose-leaf structure to form different angle arrangement forms of the rotating upper component and the frame component.

5. The air stream purifying device according to claim 4, wherein The frame component is composed of a lower structure and an upper structure, the lower structure and the upper structure are connected through a sleeve structure to enable the upper structure to make lifting movement in the connected state with the lower structure.

6. The air stream purifying device according to claim 1, wherein The lifting component is a lifting hydraulic cylinder, one end of which is connected with the lower structure and the other end of which is connected with the upper structure to drive the lifting of the upper structure in the frame component.

7. The air stream purifying device according to claim 1, wherein The lifting component can adjust the height of the upper structure in the frame component according to the change of the height of the roadway.

8. The air stream purifying device according to claim 7, wherein The rotating lower component is provided with a dust catching net in the middle thereof to catch dust.

9. The air stream purifying device according to claim 1, wherein ​

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