Mine ventilation pipeline
By setting up a suction pipe and an outlet pipe in the coal mine ventilation duct, the blades in the extension pipe rotate to prevent coal ash from being blocked, which solves the problem of blockage of ventilation ducts and achieves uniform air circulation and enhanced fluidity.
Patent Information
- Application Number
- CN202421889252.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-06
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-08-06
AI Technical Summary
When transporting air, existing coal mine ventilation ducts are prone to blockage of air outlets due to coal ash dust and high humidity, which affects the ventilation effect.
The suction pipe and the air outlet pipe are arranged in the ventilation duct. A plurality of extension pipes are provided outside the duct. A fixing frame and a fixing shaft are provided in the extension pipe. The outer wall of the fixed shaft has blades and a flow guide groove is provided on the outer wall of the inner pipe. The airflow drives the blades to rotate to prevent coal ash from accumulation.
Achieve uniform circulation of air in the mine, increase fluidity, prevent coal ash from being blocked, and ensure the flow of air holes.
Smart Images
Figure CN223062480U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ventilation ducts, and particularly relates to a mine ventilation duct. Background Art
[0002] A coal mine is an area where humans extract coal resources in coal-rich mining areas, generally divided into underground coal mines and surface coal mines. When the coal seam is far from the surface, generally, underground roadways are dug to extract coal, which is an underground coal mine.
[0003] The ventilation ducts for coal mine ventilation described in the prior art relate to the technical field of coal mine equipment, including: a device main body, a reinforcement ring, and a protection ring. Three reinforcement rings are fixedly arranged on the inner wall of the device main body. Support beams are welded on the inner wall of the reinforcement ring. Small ducts are arranged at the bottom end of the inner wall of the reinforcement ring. Support rods are welded between the left and right sides of the three reinforcement rings.
[0004] However, in the current prior art, when the ventilation duct conveys air into the mine, due to the presence of a lot of coal ash dust in the coal mine and the relatively high humidity in the mine, the coal ash will adhere to the inside of the ventilation duct opening, thus causing the air outlet to be blocked and affecting the ventilation effect. Summary of the Utility Model
[0005] The purpose of the utility model is to provide a mine ventilation duct to solve the problems raised in the above background art.
[0006] To achieve the above purpose, the utility model provides the following technical solution: a mine ventilation duct, including a duct. A ventilation and air change component for ventilating the coal mine is arranged inside the duct. The ventilation and air change component includes an air suction pipe and an air outlet pipe arranged inside the duct. A plurality of extension pipes are arranged outside both the air suction pipe and the air outlet pipe. A fixing frame is arranged inside each of the plurality of extension pipes. A fixing shaft is arranged on the inner wall of the fixing frame. Blades are arranged on the outer wall of the fixing shaft. Inner pipes are arranged inside both the air suction pipe and the air outlet pipe. A plurality of flow guiding grooves are arranged on the outer wall of the inner pipe.
[0007] Preferably, one end of the duct extends to the ground, and the other end extends into the mine. Both the air suction pipe and the air outlet pipe are installed inside the duct.
[0008] Preferably, one end of both the air suction pipe and the air outlet pipe extends into the duct, and the other end extends to the ground and is connected to an air pump.
[0009] Preferably, the plurality of extension pipes are integrally formed with the outer walls of the air suction pipe and the air outlet pipe. The plurality of extension pipes are all communicated with the air suction pipe and the air outlet pipe. The plurality of extension pipes all penetrate through the duct and extend into the mine.
[0010] As a preferred solution of the present utility model, the fixing frame is connected to the inner wall of the extension pipe through bolts. One end of the fixed shaft is located inside the extension pipe, and the other end extends into the air suction pipe or the air outlet pipe. Both ends of the fixed shaft are rotatably connected to the inner wall of the fixing frame and the inner wall of the air pipe through bearings.
[0011] Preferably, the blade is coaxially connected to the outer wall of the fixed shaft. The blade is in a spiral structure and contacts the air flow.
[0012] Preferably, the inner pipe is connected to the inner wall of the air suction pipe or the air outlet pipe through a sleeve. The guide groove is in a spiral inclined structure on the outer wall of the inner pipe. The inner pipe in the air suction pipe is located before the air flow passes through the extension pipe, and the inner pipe in the air outlet pipe is located between the first position extension pipe and the second position extension pipe near the inside of the air outlet pipe.
[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: In response to the problems raised in the background art, the present application adopts a ventilation component. By adding multiple extension pipes in the pipes in the mine for ventilation in the mine, the air can circulate evenly in the mine, increasing the air circulation in the mine, ensuring the oxygen supply, and the air flow generated during ventilation can drive the blades in the extension pipe to rotate continuously as it flows in the air outlet pipe and the air suction pipe, thereby preventing dust from accumulating in the air holes, dredging the air holes in the extension pipe, ensuring the flow effect of the air holes, and preventing coal ash from blocking. The present utility model realizes the uniform circulation of air in the mine, increases the fluidity of air in the mine, and dredges the air holes driven by the air flow to prevent coal ash accumulation and ensure the flow effect of the air holes. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a three-dimensional view of the overall structure of the present utility model.
[0015] Figure 2 It is an enlarged view of part A of the present utility model.
[0016] Figure 3 It is a cross-sectional view of the extension pipe of the present utility model.
[0017] Figure 4 It is a structural diagram of the blade of the present utility model.
[0018] Figure 5 It is a structural diagram of the inner pipe of the present utility model.
[0019] In the figure: 1. Pipe; 2. Air suction pipe; 3. Air outlet pipe; 4. Extension pipe; 401. Fixing frame; 5. Fixed shaft; 501. Blade; 6. Inner pipe; 601. Guide groove. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] Please refer to Figures 1-5, the utility model relates to a mine ventilation duct, including duct 1. Inside the duct 1, there is a ventilation component for ventilating the coal mine. The ventilation component includes an air suction pipe 2 and an air outlet pipe 3 arranged inside the duct 1. The air suction pipe 2 is used to suck out the air in the mine and discharge it to the ground, and the air outlet pipe 3 is used to transport the air on the ground surface into the mine. Through discharging and transporting, the ventilation in the mine is realized, ensuring the air circulation into the mine. Multiple extension pipes 4 are arranged outside both the air suction pipe 2 and the air outlet pipe 3. The extension pipes 4 are evenly distributed on the duct 1 in the mine, so that the air can be evenly diffused to each corner of the mine, increasing the air circulation effect in the mine. Inside multiple extension pipes 4, there are fixed frames 401. On the inner wall of the fixed frame 401, there are fixed shafts 5 for fixing the blades 501. On the outer wall of the fixed shaft 5, there are blades 501. When the air flow passes through the extension pipe 4, it will drive the blades 501 to rotate, thereby dredging the extension pipe 4 through the blades 501, preventing the air holes of the extension pipe 4 from being blocked by coal ash, and ensuring the air circulation of the air holes. Inside both the air suction pipe 2 and the air outlet pipe 3, there are inner pipes 6. On the outer wall of the inner pipe 6, there are multiple flow guiding grooves 601, making the air flow inside the air suction pipe 2 and the air outlet pipe 3 flow in a spiral shape. The blades 501 extend into the air pipe. When the air flow flows in the air suction pipe 2 and the air outlet pipe 3, it will also drive the blades 501 to rotate, ensuring the continuous rotation of the blades 501 through the air flow at the extension pipe 4 and the air flow inside the air pipe.
[0021] Coal mines are generally divided into surface coal mines and underground coal mines. When the coal seam is far from the surface, generally, roadways are dug underground to extract coal, which is an underground coal mine. When the distance between the coal seam and the surface is very close, generally, the surface soil layer is directly stripped to excavate coal, which is a surface coal mine. Most coal mines in our country belong to underground coal mines. When excavating underground coal mines, since the coal mine is at a certain distance from the ground, the oxygen content underground is relatively low. When workers are excavating, it is necessary to continuously supply air into the mine to ensure the oxygen supply for the workers.
[0022] In this embodiment, all electrical components are controlled by a conventional controller.
[0023] For the embodiment, please refer to Figures 1-5, one end of the pipeline 1 extends to the ground, and the other end extends into the mine. The suction pipe 2 and the discharge pipe 3 are both installed inside the pipeline 1. One end of the suction pipe 2 and the discharge pipe 3 extends into the pipeline 1, and the other end extends to the ground and is connected to an air pump. A plurality of the extension pipes 4 are integrally formed with the outer walls of the suction pipe 2 and the discharge pipe 3. A plurality of the extension pipes 4 communicate with the suction pipe 2 and the discharge pipe 3. A plurality of the extension pipes 4 penetrate the pipeline 1 and extend into the mine. The fixing frame 401 is connected to the inner wall of the extension pipe 4 by bolts. One end of the fixed shaft 5 is located inside the extension pipe 4, and the other end extends into the suction pipe 2 or the discharge pipe 3. Both ends of the fixed shaft 5 are rotatably connected to the inner wall of the fixing frame 401 and the inner wall of the air pipe by bearings. The blade 501 is coaxially connected to the outer wall of the fixed shaft 5. The blade 501 has a spiral structure. The blade 501 contacts the air flow. The inner pipe 6 is connected to the inner wall of the suction pipe 2 or the discharge pipe 3 through a sleeve. The flow guiding groove 601 is in a spiral inclined structure on the outer wall of the inner pipe 6. The inner pipe 6 in the suction pipe 2 is located before the air flow passes through the extension pipe 4. The inner pipe 6 in the discharge pipe 3 is located between the first position extension pipe 4 and the second position extension pipe 4 close to the inside of the discharge pipe 3. When in use, first, the air on the ground is conveyed into the discharge pipe 3 through the air pump. At the same time, the suction pipe 2 sucks out the air in the mine through the air pump and discharges it to the ground. When the air flow circulates in the air pipe, the inner pipes 6 in the suction pipe 2 and the discharge pipe 3 make the air flow spiral in the air pipe. When the air flow passes through the extension pipe 4, it is discharged from the air holes of the extension pipe 4 into the mine, realizing the circulation of air into the mine. And when the air circulates in the extension pipe 4 and the air pipe, it drives the blade 501 in the extension pipe 4 to rotate to dredge the extension pipe 4 and prevent coal ash from blocking. The utility model realizes the uniform circulation of air in the mine, increases the fluidity of air in the mine, and drives the air holes to be dredged by the air flow to prevent coal ash from accumulating and ensure the circulation effect of the air holes.
[0024] Workflow of the utility model: When in use, first, the air on the ground is conveyed into the discharge pipe 3 through the air pump. At the same time, the suction pipe 2 sucks out the air in the mine through the air pump and discharges it to the ground. When the air flow circulates in the air pipe, the inner pipes 6 in the suction pipe 2 and the discharge pipe 3 make the air flow spiral in the air pipe. When the air flow passes through the extension pipe 4, it is discharged from the air holes of the extension pipe 4 into the mine, realizing the circulation of air into the mine. And when the air circulates in the extension pipe 4 and the air pipe, it drives the blade 501 in the extension pipe 4 to rotate to dredge the extension pipe 4 and prevent coal ash from blocking. The utility model realizes the uniform circulation of air in the mine, increases the fluidity of air in the mine, and drives the air holes to be dredged by the air flow to prevent coal ash from accumulating and ensure the circulation effect of the air holes.
Claims
1. A mine ventilation duct, comprising a duct (1), wherein a ventilation component for ventilating a coal mine is arranged inside the duct (1), and is characterized in that: The ventilation component includes an air suction pipe (2) and an air outlet pipe (3) arranged inside the pipeline (1). A plurality of extension pipes (4) are arranged outside both the air suction pipe (2) and the air outlet pipe (3). A fixing frame (401) is arranged inside each of the plurality of extension pipes (4). A fixing shaft (5) is arranged on the inner wall of the fixing frame (401). A blade (501) is arranged on the outer wall of the fixing shaft (5). An inner pipe (6) is arranged inside both the air suction pipe (2) and the air outlet pipe (3). A plurality of flow guiding grooves (601) are arranged on the outer wall of the inner pipe (6).
2. The mine ventilation duct according to claim 1, wherein: One end of the pipeline (1) extends to the ground, and the other end extends into the mine. The air suction pipe (2) and the air outlet pipe (3) are both installed inside the pipeline (1).
3. The mine ventilation duct according to claim 1, characterized in that: One end of both the air suction pipe (2) and the air outlet pipe (3) extends into the pipeline (1), and the other end extends to the ground and is connected to an air pump.
4. A mine ventilation duct according to claim 1, characterized in that: The plurality of extension pipes (4) are integrally formed with the outer walls of the air suction pipe (2) and the air outlet pipe (3). The plurality of extension pipes (4) are all communicated with the air suction pipe (2) and the air outlet pipe (3). The plurality of extension pipes (4) all penetrate through the pipeline (1) and extend into the mine.
5. A mine ventilation duct according to claim 1, characterized in that: The fixing frame (401) is connected to the inner wall of the extension pipe (4) by bolts. One end of the fixing shaft (5) is located inside the extension pipe (4), and the other end extends into the air suction pipe (2) or the air outlet pipe (3). Both ends of the fixing shaft (5) are rotatably connected to the inner wall of the fixing frame (401) and the inner wall of the air pipe through bearings.
6. The mine ventilation duct according to claim 1, characterized in that: The blade (501) is coaxially connected to the outer wall of the fixing shaft (5). The blade (501) is in a spiral structure. The blade (501) contacts the air flow.
7. The mine ventilation duct according to claim 1, wherein: The inner pipe (6) is connected to the inner wall of the air suction pipe (2) or the air outlet pipe (3) through a sleeve. The flow guiding grooves (601) are in a spiral inclined structure on the outer wall of the inner pipe (6). The inner pipe (6) in the air suction pipe (2) is located before the air flow passes through the extension pipe (4). The inner pipe (6) in the air outlet pipe (3) is located between the first position extension pipe (4) and the second position extension pipe (4) close to the inside of the air outlet pipe (3).