Air distribution device for fully mechanized excavation face of coal mine

Abstract

The utility model relates to a coal mine fully-mechanized excavation face air distribution device, and belongs to the field of coal mine ventilation and dust prevention. The barrel body is provided with an axial air flow channel and a radial air flow channel, and a first air duct connecting section and a second air duct connecting section which are matched with the rubber air duct are arranged at the two axial ends of the barrel body respectively; the connecting rod is rotationally arranged on the second air duct connecting section in a manner of transversely penetrating through the duct body; the butterfly valve is mounted in the second air duct connecting section and is fixedly connected with the connecting rod; the radial air flow channel is formed in the side face of the barrel, a plurality of air direction pieces are arranged in the radial air flow channel, the edge of each air direction piece is slidably connected to the inner wall of the radial air flow channel, and axial and radial air distribution of the barrel is adjusted through rotation of the butterfly valve; a row of wind direction sheets are arranged in the radial air outlet and can swing within the range of + / -15 degrees to change the direction of wind flow. The device is light in weight, simple and convenient to connect and hang, and capable of adjusting the size and direction of the air volume at the same time.

Description

Technical Field

[0001] This utility model belongs to the field of coal mine ventilation and dust control, and relates to a coal mine fully mechanized tunneling face air distribution device. Background Technology

[0002] The tunneling face is one of the most dust-polluted locations in underground coal mines. Long-pressure short-extraction ventilation and dust removal is the most effective dust control measure for tunneling faces. In the long-pressure short-extraction ventilation and dust removal system, the ventilation control device plays an important role in preventing the spread of dust at the face, which greatly improves the dust removal efficiency of the tunneling face.

[0003] Currently, there are two main types of air control devices: flexible and rigid. Flexible devices are mostly made of rubber duct cloth, which causes large swaying of the radial air outlet and unstable airflow during use, easily affecting the air control effect. Rigid devices are mostly made of stainless steel, which is heavy, inconvenient to move, complicated to connect with the rubber duct, and the air direction of the radial air outlet cannot be adjusted. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a ventilation device for coal mine tunneling faces, which is lightweight, easy to move and install, and has adjustable air volume and direction.

[0005] To achieve the above objectives, this utility model provides a ventilation device for a coal mine fully mechanized tunneling face: including a cylinder, the cylinder having an axial airflow channel and a radial airflow channel, and a first air duct connecting section and a second air duct connecting section that cooperate with a rubber air duct respectively provided at both ends of the cylinder;

[0006] The connecting rod is rotatably mounted on the second air duct connecting section in a manner that passes through the cylinder body, and the butterfly valve is installed in the second air duct connecting section and fixedly connected to the connecting rod;

[0007] The radial airflow channel is opened on the side of the cylinder. Multiple air vanes are installed in the radial airflow channel. The edge of each air vane is slidably connected to the inner wall of the radial airflow channel. The limiting rod slides along the axial direction of the cylinder through the radial airflow channel and through each air vane.

[0008] Optionally, two lifting rings are fixed on one side of the cylinder surface.

[0009] Optionally, both the first and second air duct connecting sections have concave grooves on their surfaces.

[0010] Optionally, a sealing ring is fixed at the edge of the butterfly valve to improve the sealing performance between the butterfly valve and the inner wall of the cylinder.

[0011] Optionally, the cylinder has a T-shaped structure with an axial length L1 of 1.0m and a radial length L2 of 0.7m.

[0012] Optionally, the angle adjustment range of the wind vane is -15° to +15°.

[0013] Optionally, the cylinder body can be made of polyurethane.

[0014] The beneficial effects of this utility model are as follows:

[0015] (1) The cylinder is made of wear-resistant, flame-retardant and antistatic polyurethane material, weighing about 7.5kg, which greatly reduces the weight of the device and makes it more convenient to move and install.

[0016] (2) There are concave grooves on the connecting sections at both ends of the cylinder. When connecting, simply put the rubber air duct into the concave groove and tighten the tightening belt. The operation is simple and the connection is convenient when connecting with the rubber air duct.

[0017] (3) The wind direction of the radial air outlet can be changed by changing the angle of the wind vane. The wind direction adjustment range is -15° to +15°. When the wind direction angle is 0° to +15°, it is more conducive to wind and dust control at the tunnel face. When the wind direction angle is -15° to 0°, the dust in the superimposed section can be diluted in time.

[0018] 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

[0019] 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:

[0020] Fig. 1 This is a front view structural schematic diagram of a ventilation distribution device for a fully mechanized coal mine tunneling face proposed in this utility model;

[0021] Fig. 2 This is a top view structural schematic diagram of a ventilation distribution device for a fully mechanized coal mine tunneling face proposed in this utility model;

[0022] Fig. 3 This is a right-side structural schematic diagram of a ventilation distribution device for a fully mechanized coal mine tunneling face proposed in this utility model;

[0023] Fig. 4 This is a schematic diagram of the main structure of a ventilation distribution device for a fully mechanized coal mine tunneling face proposed in this utility model.

[0024] Reference numerals in the attached drawings: 1. Cylinder body; 2. Lifting ring; 3. First air duct connection section; 4. Second air duct connection section; 5. Butterfly valve; 6. Air vane; 7. Connecting rod; 8. Limiting rod; 9. Axial airflow channel; 10. Radial airflow channel. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] 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.

[0028] Please see Figs. 1-4 This is a ventilation distribution device for a fully mechanized coal mine tunneling face, comprising a cylinder 1, a lifting ring 2, a first ventilation duct connecting section 3, a second ventilation duct connecting section 4, a butterfly valve 5, a wind vane 6, a connecting rod 7, a limiting rod 8, an axial airflow channel 9, and a radial airflow channel 10. The cylinder 1, as the main structure of the entire device, is designed with both axial airflow channels 9 and radial airflow channels 10. The axial airflow channel 9 runs through both ends of the cylinder 1 along its axis, allowing the main airflow to pass through. The radial airflow channel 10 is located on the side of the cylinder 1, used for regulating and distributing airflow.

[0029] At both ends of the cylinder 1, a first air duct connecting section 3 and a second air duct connecting section 4 are respectively provided. These two connecting sections are designed to fit and connect with the rubber air duct to ensure smooth airflow. To enhance the stability and sealing of the connection, both the first air duct connecting section 3 and the second air duct connecting section 4 have concave grooves on their surfaces to engage with the corresponding structure of the rubber air duct.

[0030] A connecting rod 7 is rotatably mounted across the cylinder 1 on the second air duct connecting section 4. One end of the connecting rod 7 is fixedly connected to the butterfly valve 5. By rotating the connecting rod 7, the butterfly valve 5 can be opened or closed inside the cylinder 1, thereby controlling the airflow of the axial airflow channel 9. To ensure the sealing between the butterfly valve 5 and the inner wall of the cylinder 1, a sealing ring is fixedly provided at the edge of the butterfly valve 5.

[0031] Multiple air vanes 6 are provided within the radial airflow channel 10. The edge of each air vane 6 is slidably connected to the inner wall of the radial airflow channel 10, allowing the air vane 6 to be angled within a certain range. To achieve adjustment and fixation of the air vane 6 angle, a limiting rod 8 is slidably inserted along the axial direction of the cylinder 1. The limiting rod 8 passes through the center hole of each air vane 6, and the angle of the air vane 6 can be locked or unlocked by moving the position of the limiting rod 8. In this embodiment, the angle adjustment range of the air vane 6 is -15° to +15° to meet the airflow adjustment requirements under different operating conditions.

[0032] To facilitate the hoisting and movement of the device, two lifting rings 2 are fixed to one side of the surface of the cylinder 1. The design of the lifting rings 2 allows operators to use hoisting equipment to hoist and move the entire device, improving the convenience and efficiency of operation.

[0033] In this embodiment, the cylinder 1 is made of polyurethane. Polyurethane has excellent properties such as light weight, high strength, and corrosion resistance, making it suitable for use in harsh environments such as coal mines. Furthermore, the cylinder 1 is designed as a T-shaped structure, with an axial length L1 of 1.0m and a radial length L2 of 0.7m to meet the airflow distribution requirements in actual use.

[0034] The working principle of the ventilation distribution device for a fully mechanized coal mine tunneling face provided by this utility model is as follows:

[0035] In use, first, the device is suspended together with the rubber ventilation duct using the lifting ring 2. Then, the rubber ventilation duct is fitted into the concave grooves of the first ventilation duct connecting section 3 and the second ventilation duct connecting section 4, and the tightening strap is pulled tight, which can achieve quick and easy connection. During tunneling operations, the rotation angle of the butterfly valve 5 is controlled by the connecting rod 7 to adjust the axial and radial air volume, so that most of the airflow flows out radially, achieving dust control by utilizing the wall adhesion effect. The exhaust angle of the wind vane 6 is controlled by adjusting the limit rod 8 according to the site conditions, thereby changing the radial air outlet. The device is made of polyurethane material, which has the advantages of wear resistance, flame retardancy, and antistatic properties. The device weighs about 7.5 kg, which greatly reduces the weight of the device and makes it easier to move and install. The wind direction of the radial air outlet is changed by changing the angle of the wind vane. The wind direction adjustment range is -15° to +15°. When the wind direction angle is 0° to +15°, it is more conducive to wind and dust control at the tunnel face. When the wind direction angle is -15° to 0°, it can dilute the dust in the stacked section in time.

[0036] 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. A ventilation distribution device for a fully mechanized coal mine tunneling face, characterized in that: Includes a cylinder (1), which has an axial airflow channel (9) and a radial airflow channel (10). The cylinder (1) has a first air duct connecting section (3) and a second air duct connecting section (4) that cooperate with the rubber air duct at both ends of the axial direction. The surfaces of the first air duct connecting section (3) and the second air duct connecting section (4) are provided with concave grooves. The two connecting sections are connected with the rubber air duct to ensure smooth airflow. The concave grooves are engaged with the rubber air duct. The connecting rod (7) is rotatably mounted on the second air duct connecting section (4) in a manner that passes through the cylinder (1). The butterfly valve (5) is installed in the second air duct connecting section (4) and fixedly connected to the connecting rod (7). By rotating the connecting rod (7), the butterfly valve (5) can be driven to open or close inside the cylinder (1), thereby controlling the air volume of the axial airflow channel (9). A sealing ring is fixed at the edge of the butterfly valve (5) to improve the sealing performance between the butterfly valve (5) and the inner wall of the cylinder (1). A radial airflow channel (10) is opened on the side of the cylinder (1). Multiple airflow vanes (6) are provided inside the radial airflow channel (10). The edge of each airflow vane (6) is slidably connected to the inner wall of the radial airflow channel (10). The limiting rod (8) slides along the axial direction of the cylinder (1) through the radial airflow channel (10) and through each airflow vane (6).

2. The ventilation distribution device for a fully mechanized coal mine tunneling face according to claim 1, characterized in that: Two lifting rings (2) are fixed on one side of the surface of the cylinder (1).

3. The ventilation distribution device for a fully mechanized coal mine tunneling face according to claim 1, characterized in that: The cylinder (1) has a T-shaped structure with an axial length L1 of 1.0m and a radial length L2 of 0.7m.

4. The ventilation distribution device for a fully mechanized coal mine tunneling face according to claim 1, characterized in that: The angle adjustment range of the wind vane (6) is -15° to +15°.

5. A ventilation device for a fully mechanized coal mine tunneling face according to claim 1, characterized in that: The cylindrical body (1) is made of polyurethane.

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