Four-branch air distributor for coal mining

Abstract

The utility model relates to the technical field of ventilation equipment, and discloses a four-branch air distributor for coal mining, which comprises an air distributor main body with a hollow cubic box type structure, and the air distributor main body is provided with a first air inlet, a second air inlet, a first air outlet and a second air outlet; an adjusting baffle is arranged in the air distributor body and used for switching opening and closing of the second air inlet. Opening and closing of the second air inlets are controlled through the adjusting baffles on the same side wall face, the function that a single device replaces a traditional multi-set series-connection air distributor is achieved, the layout of a ventilation system is simplified, the manufacturing and maintaining cost of the device is reduced, and the ventilation efficiency is improved. Through the design of double-air-inlet air supply or switching of single-air-inlet air supply, ventilation dead angles are effectively eliminated, airflow distribution uniformity is improved, it is ensured that ventilation requirement changes can be quickly responded in underground operation, and the ventilation efficiency and safety are both improved; the problems that a traditional air distributor is complex in installation, prone to accumulation of harmful gas and the like due to the redundant structure are solved fundamentally.

Description

Technical Field

[0001] This utility model relates to the field of ventilation equipment technology and discloses a four-way air distributor for coal mining. Background Technology

[0002] During the coal mining retreat tunnel excavation operation, if the normal ventilation requirements of the working face cannot be met, problems such as the accumulation of toxic and harmful gases and the creation of ventilation dead zones from the local ventilation fan to the facing ventilation duct may occur. To ensure normal ventilation across the entire working face and to solve the ventilation dead zones from the local ventilation fan to the facing ventilation duct, the original design scheme was to connect two three-way air distributors in series, with a short ventilation duct connected to the second three-way air distributor as an emergency ventilation duct. However, the on-site hoisting work was cumbersome and lacked standardization. Utility Model Content

[0003] The purpose of this utility model is to provide a four-way ventilation distributor for coal mining, which simplifies the layout of the ventilation system, reduces the cost of equipment manufacturing and maintenance, effectively eliminates ventilation dead zones, improves the uniformity of airflow distribution, and ensures that ventilation demand changes can be responded to quickly during underground operations. It solves the problems of complex installation and easy accumulation of harmful gases caused by the structural redundancy of traditional ventilation distributors.

[0004] To achieve the above-mentioned technical effects, the technical solution adopted by this utility model is as follows:

[0005] A four-way ventilation distributor for coal mining includes a main body, which is a hollow cubic box structure. The main body is equipped with a first air inlet, a second air inlet, a first air outlet, and a second air outlet, all communicating with the inner cavity of the main body. The first air inlet and the second air inlet are installed on the same side wall of the main body. An adjusting baffle is hinged to the inner wall of the main body where the second air inlet is installed via a fixed bracket. The adjusting baffle is used to switch the opening and closing of the second air inlet.

[0006] Furthermore, the adjusting baffle is provided with a sealing strip at the edge that contacts the inner wall of the air distributor body.

[0007] Furthermore, the first air outlet is detachably connected to the air duct via a flange; a sealing component is provided at the second air outlet to seal the second air outlet.

[0008] Furthermore, the sealing component is a rubber sleeve installed at the second air outlet, and a locking clamp is provided on the outside of the rubber sleeve to close the rubber sleeve.

[0009] Furthermore, the sealing component is an adjusting cover plate disposed on the end face of the second air outlet and capable of closing the second air outlet, the adjusting cover plate being hinged to the second air outlet.

[0010] Furthermore, a lifting ring is installed on the top of the air distributor body.

[0011] Furthermore, the adjusting baffle is connected to an operating rod extending to the outside of the air distributor body, which is used to switch the opening and closing state of the adjusting baffle, and the end of the operating rod is provided with a non-slip handle.

[0012] Furthermore, the edges of the main body of the air distributor are covered with protective corner protectors, which are made of high-molecular composite materials.

[0013] Furthermore, the outer surface of the air distributor body is provided with an anti-corrosion coating, which covers all exposed metal surfaces of the air distributor.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model integrates dual inlet and dual outlet air vents through a hollow cubic box structure. It uses the adjustment baffle and guide component on the same side wall to control the opening and closing of the two air vents in a linkage manner, realizing the function of a single device replacing the traditional multi-set series air distributor. This simplifies the layout of the ventilation system, reduces the manufacturing and maintenance costs of the equipment, and effectively eliminates ventilation dead zones and improves the uniformity of airflow distribution through the design of dual air inlet air supply or switching to single air inlet air supply. This ensures that ventilation demand changes can be responded to quickly during underground operations. While taking into account both ventilation efficiency and safety, it fundamentally solves the problems of complex installation and easy accumulation of harmful gases caused by the structural redundancy of traditional air distributors. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the four-way ventilation system used in coal mining, as shown in the example.

[0016] Figure 2 A three-dimensional view of a four-way ventilation distributor for coal mining with an adjustable cover plate;

[0017] The components include: 1. Main body of the air distributor; 2. First air inlet; 3. Second air inlet; 4. First air outlet; 5. Second air outlet; 6. Adjusting baffle; 7. Fixed bracket; 8. Air duct; 9. Rubber sleeve; 10. Adjusting cover plate; 11. Lifting ring; 12. Operating lever; 13. Locking clamp. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the embodiments and accompanying drawings. However, this should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0019] Example

[0020] See Figure 1A four-way ventilation distributor for coal mining includes a main body 1, which is a hollow cubic box structure. The main body 1 is equipped with a first air inlet 2, a second air inlet 3, a first air outlet 4, and a second air outlet 5, which are connected to the inner cavity of the main body 1. The first air inlet 2 and the second air inlet 3 are installed on the same side wall of the main body 1. An adjusting baffle 6 is hinged to the inner wall of the main body 1 where the second air inlet 3 is installed through a fixed bracket 7. The adjusting baffle 6 is used to switch the opening and closing of the second air inlet 3.

[0021] In this embodiment, a hollow cubic box structure is used to integrate dual inlets and dual outlets. The opening and closing of the two inlets are controlled by the linkage between the adjusting baffle 6 on the same side wall and the guide component. This allows a single device to replace the function of traditional multi-group series air distributors. This simplifies the layout of the ventilation system, reduces the manufacturing and maintenance costs of the equipment, and effectively eliminates ventilation dead zones and improves the uniformity of airflow distribution by using a dual-inlet air supply or switching to a single inlet air supply. This ensures that ventilation demand can be quickly responded to during underground operations. While taking into account both ventilation efficiency and safety, this design fundamentally solves the problems of complex installation and easy accumulation of harmful gases caused by the structural redundancy of traditional air distributors.

[0022] In this embodiment, the adjusting baffle 6 is provided with a sealing strip on the edge that contacts the inner wall of the air distributor body 1, which effectively avoids the problem of air leakage caused by poor sealing when the adjusting baffle 6 is in the closed state of the second air inlet 3, and effectively avoids the problem of pressure loss and reduced ventilation capacity.

[0023] In this embodiment, the first air outlet 4 is detachably connected to the air duct 8 via a flange; a sealing assembly is provided at the second air outlet 5 to seal the second air outlet 5. The first air outlet 4 can be flexibly connected to different air ducts 8 as needed. On the one hand, it can serve as a normal ventilation outlet for the working face; on the other hand, its detachable design allows for rapid switching of ventilation paths in emergencies, ensuring the continuity and stability of the ventilation system. Simultaneously, the second air outlet 5 serves as an emergency ventilation outlet, normally closed, and the sealing assembly effectively prevents airflow leakage in this closed state; in emergencies, the sealing assembly can be opened promptly to achieve a rapid ventilation response.

[0024] In specific implementation, when the second air outlet 5 is in different forms, the sealing component used will be adjusted accordingly. For example, when the sealing component can be a rubber sleeve 9 installed at the second air outlet 5, a locking clamp 13 is provided outside the rubber sleeve 9 to close the rubber sleeve 9 (e.g., Figure 1 When the sealing assembly is an adjusting cover 10 disposed on the end face of the second air outlet 5 and capable of closing the second air outlet 5, the adjusting cover 10 is hinged to the second air outlet 5 (e.g. Figure 2 ).

[0025] In this embodiment, a lifting ring 11 is installed on the top of the main body 1 of the air distributor. The overall dimensions of the four-way air distributor are a cube of 1750mm×900mm×900mm (the face of the welded inlet and outlet interface is made of 3mm steel plate, and the other faces are made of 2mm steel plate). The interface is designed as a perfect circle with a diameter of 800mm×4 (2mm steel plate). The internal adjusting baffle 6 is a square plate of 890mm×890mm (1mm stainless steel plate). The fixing frame of the adjusting baffle 6 is designed as a 900mm×1000mm inclined plate (2mm steel plate), with an 850mm×850mm ventilation opening cut out in the center. The overall frame of the four-way air distributor is welded with 50 angle steel. Four 60 chain links are welded to the four corners of the 900mm×900mm top plate of the air distributor main body 1 to serve as lifting rings 11.

[0026] The four-way air distributor has two symmetrical 1750mm×900mm surfaces, each with two 800mm round holes symmetrically cut in the center as the air inlet and outlet (two inlets and two outlets). Four 800mm connectors are welded to the outside of the round holes. Inside the main body 1 of the air distributor, a fixed bracket 7 is directly welded to the inner side of the mounting side plate of the first air inlet 2 and the second air inlet 3. The adjusting baffle 6 is hinged to the fixed bracket 7.

[0027] In this embodiment, the adjusting baffle 6 is connected to an operating rod 12 extending to the outside of the air distributor body 1, used to switch the opening and closing state of the adjusting baffle 6. The operating rod 12 has a non-slip handle at its end. The operating rod 12 is made of 25mm diameter round steel to ensure its sturdiness and durability. The non-slip handle is made of rubber with anti-slip textured surfaces to increase friction during gripping and prevent operational errors due to slippage. In this embodiment, the operating rod 12 can be movably installed on the housing of the air distributor body 1 using a threaded connection. A magnetic component is provided at the position where the operating rod 12 abuts against the adjusting baffle 6. This allows operators to easily adjust the position of the adjusting baffle 6 to switch the second air inlet 3, while simultaneously adjusting the relative position of the operating rod 12 to adjust the opening size of the second air inlet 3, facilitating ventilation flow control.

[0028] In this embodiment, the edges of the air distributor body 1 are covered with protective corner protectors made of high-polymer composite material. This effectively protects the edges of the air distributor body 1 from external environmental erosion and damage, thus improving the service life of the air distributor body 1.

[0029] In this embodiment, the outer surface of the main body 1 of the air distributor is provided with an anti-corrosion coating. The anti-corrosion coating covers all exposed metal surfaces of the air distributor, which can effectively isolate the corrosion of the metal surface of the air distributor by corrosive media such as air and moisture, and greatly enhance the corrosion resistance of the air distributor.

[0030] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A four-way ventilation distributor for coal mining, characterized in that, The system includes a main body (1) of a splitter, which is a hollow cubic box structure. The main body (1) of the splitter is equipped with a first air inlet (2), a second air inlet (3), a first air outlet (4), and a second air outlet (5) that communicate with the inner cavity of the main body (1). The first air inlet (2) and the second air inlet (3) are installed on the same side wall of the main body (1). An adjusting baffle (6) is hinged to the inner wall of the main body (1) where the second air inlet (3) is installed through a fixed bracket (7). The adjusting baffle (6) is used to switch the opening and closing of the second air inlet (3).

2. The four-way ventilation system for coal mining according to claim 1, characterized in that, The adjusting baffle (6) has a sealing strip on the edge that contacts the inner wall of the air distributor body (1).

3. The four-way ventilation system for coal mining according to claim 1, characterized in that, The first air outlet (4) is detachably connected to the air duct (8) via a flange; a sealing component is provided at the second air outlet (5) to seal the second air outlet (5).

4. The four-way ventilation system for coal mining according to claim 3, characterized in that, The sealing component is a rubber sleeve (9) installed at the second air outlet (5), and a locking clamp (13) is provided on the outside of the rubber sleeve (9) to close the rubber sleeve (9).

5. The four-way ventilation system for coal mining according to claim 3, characterized in that, The sealing component is an adjusting cover plate (10) disposed on the end face of the second air outlet (5) and capable of closing the second air outlet (5). The adjusting cover plate (10) is hinged to the second air outlet (5).

6. The four-way ventilation system for coal mining according to claim 1, characterized in that, A lifting ring (11) is installed on the top of the main body (1) of the air distributor.

7. The four-way ventilation system for coal mining according to claim 1, characterized in that, The adjusting baffle (6) is connected to an operating rod (12) extending to the outside of the air distributor body (1) for switching the opening and closing state of the adjusting baffle (6). The operating rod (12) is provided with an anti-slip handle at its end.

8. The four-way ventilation system for coal mining according to claim 1, characterized in that, The edges of the main body (1) of the air distributor are covered with protective corner protectors, which are made of high-molecular composite materials.

9. The four-way ventilation system for coal mining according to claim 1, characterized in that, The outer surface of the main body (1) of the air distributor is provided with an anti-corrosion coating, which covers all exposed metal surfaces of the air distributor.

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