Mine ventilation equipment

Abstract

The present invention belongs to the technical field of mine ventilation and discloses a ventilation device for mines, comprising a main pipe, the end of which is detachably connected to an inspection pipe, a flow conversion assembly installed in the main pipe, the flow conversion assembly comprising two baffles slidably installed in the main pipe, and the two baffles are hinged to each other by hinges, and a plurality of passage slots for airflow are opened in both baffles, a mounting frame is fixedly installed in the main pipe, a plurality of docking pipes are fixedly installed in the mounting frame, the ends of the docking pipes are provided with elastic blocking devices, and an elastic supporting device is provided in the main pipe. By providing the flow conversion assembly, the present invention can instantly change the airflow path in the main pipe when the inspection pipe is disassembled, so that the airflow is transferred to the docking pipe inside the main pipe and continues to be transported backward, thereby solving the key problem of having to completely shut down the machine during maintenance or emergency repairs, and ensuring uninterrupted ventilation in the depths of the mine.

Description

Technical Field

[0001] The invention belongs to the technical field of mine ventilation, and in particular relates to a ventilation device for mines. Background Art

[0002] Mine ventilation equipment is the cornerstone of safe mine operations. The core is the main fan, which provides a continuous and stable main airflow throughout the mine. As mining depth increases, ventilation system piping is prone to problems over time. The joints between multiple ventilation ducts are prone to air leakage and breakage, making the connection between ventilation ducts a top priority.

[0003] In the prior art, a Chinese invention patent with authorization announcement number CN118933966B discloses a mine ventilation device, comprising a mounting base, a support ramp fixedly mounted on the upper end of the mounting base, a rectangular shell fixedly mounted on the upper end of the support ramp, a tunnel purification mechanism disposed inside the rectangular shell, a safety monitoring mechanism movably mounted on the outside of the rectangular shell, a rapid ventilation mechanism disposed on the sides and inside of the rectangular shell, an anti-blocking dust vibration mechanism disposed inside the tunnel purification mechanism, and air inlet channels symmetrically disposed on the front and rear sides of the rectangular shell. This patent, by providing a tunnel purification mechanism and utilizing the interaction between an adsorption cotton plate and a suction air pump, can automatically purify the air within the tunnel construction area, effectively reducing the content of dust and harmful components in the air within a small range of tunnels, thereby not only ensuring the health of construction workers to a large extent, but also providing assistance to mining operations.

[0004] According to the technical solutions proposed in the above patent documents, it can be seen that the above solutions still have obvious shortcomings. For example, the main body of the above mine ventilation equipment is mostly composed of ventilation ducts spliced ​​together. This type of ventilation duct has a built-in filter mechanism to eliminate toxic and harmful dust in the air deep in the mine. In order to ensure the good filtering effect of the ventilation device filter mechanism, the ventilation duct needs to be disassembled regularly and the inner wall and filter mechanism of the ventilation duct need to be cleaned. When performing such maintenance operations, after the ventilation duct is disassembled, the overall continuity of the ventilation equipment is destroyed, making it impossible for the ventilation equipment to exchange air with the air deep in the mine and forced to stop ventilation operations. At this time, in order to avoid the toxic and harmful gases in the mine from harming the human body, the workers in the mine cannot continue to work when the ventilation equipment stops ventilation, which greatly reduces the working efficiency in the mine. If the cleaning pipeline part goes deep into the mine, the toxic and harmful gases deep in the mine will gush out, which may harm the health of the maintenance workers who stay for a long time when disassembling the pipeline. Similarly, when the ventilation ducts in the mine are damaged due to external forces and need to be repaired, the ventilation operations deep in the mine must be suspended. When any of the above situations occurs, the activities of personnel deep in the mine need to be suspended, which greatly reduces the overall work efficiency of the mine operation. Summary of the Invention

[0005] The object of the present invention is to provide a mine ventilation device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A mine ventilation device includes a main pipe, an inspection pipe being detachably connected to the end of the main pipe, and a flow change assembly installed in the main pipe for changing the direction of airflow in the main pipe. After the inspection pipe is removed, the flow change assembly changes the direction of airflow in the main pipe.

[0008] The flow conversion assembly includes two baffles slidably installed in the main pipeline, and the two baffles are hinged to each other by hinges. A plurality of passage grooves for air flow are opened in the two baffles. A mounting frame is fixedly installed in the main pipeline, and a plurality of docking pipes are fixedly installed in the mounting frame. The ends of the docking pipes are provided with elastic sealing devices for sealing the docking pipes, and the main pipeline is provided with an elastic supporting device for supporting the baffles. When the maintenance pipe is separated from the main pipe, the airflow in the main pipe is transported backward along the docking pipe. The same limiting bracket is slidably installed on the outside of the plurality of docking pipes, and the limiting bracket is fixedly connected to the elastic supporting device. When the maintenance pipe is fixedly connected to the main pipe, the limiting bracket drives the elastic sealing device to block the openings of the plurality of docking pipes, and the limiting bracket drives the elastic supporting device to move the baffle away from the docking pipe.

[0009] Furthermore, the elastic sealing device includes a plurality of sealing plates rotatably mounted at the end of the docking pipe, the plurality of sealing plates cooperate with each other and seal the end opening of the docking pipe, the side wall of the sealing plate is hinged with an arc-shaped hinged rod, the arc-shaped hinged rod is hinged with a slide at one end away from the sealing plate, and the slide is slidably mounted on the outer wall of the docking pipe, the top of the slide is sleeved with a first spring, and one end of the first spring is pressed against the side wall of the mounting frame, and the other end is pressed against the side wall of the slide.

[0010] Furthermore, the elastic supporting device includes a slide plate slidably installed in the main pipe, a slide groove is opened in the main pipe for the slide plate to slide, the top and bottom of the baffle are rotatably connected to pulleys, and the side walls of the slide plate are in contact with the side walls of the pulleys, a second spring is placed in the slide groove, and the two ends of the second spring are respectively pressed against the side walls of the slide groove and the side walls of the slide plate.

[0011] Furthermore, a top support plate is slidably installed in the slide groove, and the side wall of the top support plate contacts the side wall of the pulley. The top of the top support plate is fixedly connected to a limit plate for limiting the sliding distance of the top support plate, and the end of the top support plate away from the pulley is fixedly connected to the limit bracket.

[0012] Furthermore, the maximum rotation angle of the plurality of sealing plates is 180°.

[0013] Furthermore, a torsion spring is provided in the hinge, and two ends of the torsion spring respectively press against the side walls of the two baffles.

[0014] Furthermore, limit bars are provided on both sides of the chute in the main pipe.

[0015] Furthermore, the maintenance pipeline comprises two spliced ​​pipelines fixedly connected.

[0016] Due to the adoption of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0017] 1. The present invention provides a flow conversion component, which can instantly change the airflow path in the main pipeline when the pipeline is disassembled for maintenance, so that the airflow continues to be transported backward through the docking pipeline inside the main pipeline, solving the key problem of having to completely shut down the machine during maintenance or emergency repairs, and ensuring uninterrupted ventilation in the deep mine.

[0018] 2. The present invention automatically closes the main pipeline gap and maintains the unobstructed connection of the docking pipeline when disassembling and repairing the pipeline, effectively blocking the path for harmful gases to flow out in large quantities through the disassembly port during maintenance, and providing a safer environment for maintenance personnel who are cleaning or repairing the pipeline.

[0019] 3. This invention utilizes a mechanical linkage between an elastic supporting device and an elastic sealing device, combined with a position-limiting bracket, to fully automate the switching of airflow paths. Removing the inspection duct itself triggers the flow converter assembly to close the main channel and open the docking duct. Conversely, reinstalling the inspection duct automatically resets the flow converter assembly, restoring the original airflow path. This design eliminates the tedious manual intervention required to switch air ducts, significantly improving the system's responsiveness and ease of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0021] Figure 1 This is a schematic diagram of the external connections of the present invention;

[0022] Figure 2 Schematic diagram of the structure of the converter assembly in the present invention;

[0023] Figure 3 for Figure 2 Schematic diagram of the structure from another angle;

[0024] Figure 4 for Figure 3 A is an enlarged schematic diagram;

[0025] Figure 5 Schematic diagram of the working of the current conversion component in the present invention;

[0026] Figure 6 for Figure 5 Schematic diagram of the internal structure without part of the main pipeline;

[0027] Figure 7 for Figure 6 Schematic diagram of the structure from another angle;

[0028] Figure 8 for Figure 6 A magnified schematic diagram of B.

[0029] In the figure: 1. Main pipeline; 2. Inspection pipeline; 3. Baffle; 4. Hinge; 5. Passage groove; 6. Mounting frame; 7. Docking pipeline; 8. Closing plate; 9. Arc-shaped hinged rod; 10. Slide seat; 11. First spring; 12. Slide plate; 13. Slide groove; 14. Pulley; 15. Second spring; 16. Support plate; 17. Limit plate; 18. Limit bracket; 19. Torsion spring; 20. Limit lever. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] like Figures 1 to 8 As shown, the present invention provides a ventilation device for mines, including a main pipe 1, the end of which is detachably connected to a maintenance pipe 2, and a flow conversion component for changing the direction of the airflow in the main pipe 1 is installed in the main pipe 1. After the maintenance pipe 2 is disassembled, the flow conversion component changes the direction of the airflow in the main pipe 1.

[0032] The flow conversion assembly includes two baffles 3 slidably installed in the main pipe 1, and the two baffles 3 are hinged to each other by hinges 4. A plurality of passage grooves 5 for airflow are provided in the two baffles 3. A mounting frame 6 is fixedly installed in the main pipe 1, and a plurality of docking pipes 7 are fixedly installed in the mounting frame 6. The ends of the docking pipes 7 are provided with elastic sealing devices for sealing the docking pipes 7. An elastic supporting device for supporting the baffles 3 is provided in the main pipe 1. When the maintenance pipe 2 is separated from the main pipe 1, the airflow in the main pipe 1 is transported backward along the docking pipe 7. The same limiting bracket 18 is slidably installed on the outside of the multiple docking pipes 7. The limiting bracket 18 is fixedly connected to the elastic supporting device. When the maintenance pipe 2 is fixedly connected to the main pipe 1, the limiting bracket 18 drives the elastic sealing device to block the openings of the multiple docking pipes 7, and the limiting bracket 18 drives the elastic supporting device to move the baffles 3 away from the docking pipe 7.

[0033] As a further explanation of this embodiment, in this embodiment, a ventilator is externally connected to the end of the main pipe 1 (the ventilator in this embodiment is prior art, so no further description is given). The ventilator is started to convey air into the main pipe 1. When the main pipe 1 is fixedly connected to the inspection pipe 2, the airflow in the main pipe 1 continues to be conveyed backward along the inspection pipe 2. When the inspection pipe 2 needs to be maintained or repaired, the inspection pipe 2 is removed, and the baffle 3 in the main pipe 1 is supported by the elastic supporting device and slides toward the end of the docking pipe 7 until the baffle 3 fits with the end of the docking pipe 7. The baffle 3 cooperates with the elastic sealing device to block the remaining space of the main pipe 1, so that the airflow in the main pipe 1 can only be conveyed backward along the docking pipe 7, so that the ventilation operation can be achieved without interruption when inspecting the pipe 2.

[0034] After the maintenance of the inspection pipe 2 is completed, the inspection pipe 2 is re-fixed to the main pipe 1, and the inspection pipe 2 forces the baffle 3 and the elastic sealing device to reset by resisting the limit bracket 18, so that the airflow in the main pipe 1 continues to be transported backward along the inspection pipe 2, thereby completing the maintenance or repair process of the uninterrupted ventilation operation of the device.

[0035] In this embodiment, the ventilation system consists of ventilation ducts and service ducts 2 connected at intervals. Specifically, the ventilator is connected to the first main duct 1, which is connected to the first service duct 2, which is connected to the second main duct 1, which is connected to the second service duct 2, and so on. Flow converters are installed at both ends of the main duct 1, and adjacent flow converters are interconnected. Furthermore, all air filters are located within the service duct 2 to facilitate maintenance and repair during installation and disassembly of the service duct 2.

[0036] As a preferred embodiment of the present invention, the elastic sealing device includes a plurality of sealing plates 8 rotatably mounted on the end of the docking pipe 7. The plurality of sealing plates 8 cooperate with each other and seal the end opening of the docking pipe 7. The side wall of the sealing plate 8 is hinged with an arc-shaped hinged rod 9. The arc-shaped hinged rod 9 is hinged with a slide 10 at one end away from the sealing plate 8, and the slide 10 is slidably mounted on the outer wall of the docking pipe 7. A first spring 11 is sleeved on the top of the slide 10, and one end of the first spring 11 is pressed against the side wall of the mounting frame 6, and the other end is pressed against the side wall of the slide 10.

[0037] As a further explanation of this embodiment, in this embodiment, the slide 10 slides back and forth on the outer wall of the docking pipe 7 to drive the arc-shaped hinged rod 9 to drive the sealing plate 8 to rotate, thereby achieving the function of sealing or opening the end opening of the docking pipe 7. The slide 10 itself has no driving force. Therefore, a first spring 11 is provided on the slide 10. The elastic force of the first spring 11 resists the slide 10, so that the slide 10 can drive the sealing plate 8 to flip and open the opening at the end of the docking pipe 7 through the arc-shaped hinged rod 9 when it is not affected by any external force except the elastic force of the first spring 11. When the maintenance pipe 2 is docked with the main pipe 1, the limiting bracket 18 sleeved on the outside of the docking pipe 7 drives the limiting bracket 18 to resist multiple slides 10 to compress the first spring 11, thereby driving multiple sealing plates 8 to rotate in the direction of sealing the end opening of the docking pipe 7.

[0038] As a preferred embodiment of the present invention, the elastic supporting device includes a slide plate 12 slidably installed in the main pipe 1, a slide groove 13 is opened in the main pipe 1 for the slide plate 12 to slide, the top and bottom of the baffle 3 are rotatably connected to the pulley 14, and the side wall of the slide plate 12 is in contact with the side wall of the pulley 14, a second spring 15 is placed in the slide groove 13, and the two ends of the second spring 15 are respectively pressed against the side wall of the slide groove 13 and the side wall of the slide plate 12.

[0039] As a further explanation of this embodiment, in this embodiment, the second spring 15 supports the slide plate 12, so that the baffle 3 slides toward the docking pipe 7 under the elastic force of the second spring 15, and in this process, the two baffles 3 are in a state of blocking the main pipe 1, and then cooperate with multiple sealing plates 8 to close all the remaining channels in the main pipe 1, leaving only the docking pipe 7 for the air flow in the main pipe 1 to pass.

[0040] As a preferred solution of the present invention, a top support plate 16 is slidably installed in the slide groove 13, and the side wall of the top support plate 16 abuts against the side wall of the pulley 14. The top of the top support plate 16 is fixedly connected with a limit plate 17 for limiting the sliding distance of the top support plate 16. The end of the top support plate 16 away from the pulley 14 is fixedly connected to the limit bracket 18.

[0041] As a further explanation of this embodiment, in this embodiment, the limit plate 17 is used to limit the sliding distance of the baffle 3. When the baffle 3 is supported by the second spring 15 and slides to be flush with the end of the docking pipe 7, the side wall of the limit plate 17 contacts the side wall of the mounting frame 6 to limit the baffle 3 from continuing to slide forward, so as to achieve the positioning effect of the sliding distance of the baffle 3, thereby improving the fit between the sealing plate 8 and the passage groove 5. In this embodiment, the outer ring of the limit bracket 18 is slightly larger than the vent of the main pipe 1. Therefore, when the inspection pipe 2 is docked and installed with the main pipe 1, the end of the inspection pipe 2 contacts the outer ring of the limit bracket 18, and the side wall of the limit bracket 18 is fixedly connected to the top support plate 16. Therefore, when the inspection pipe 2 and the main pipe 1 gradually approach each other, the limit bracket 18 gradually compresses the second spring 15 through the top support plate 16, so that the baffle 3 is away from the end of the docking pipe 7, and the limit bracket 18 is sleeved on the outside of the docking pipe 7. When the limit bracket 18 contacts the slide 10, the slide 10 moves forward and drives the sealing plate 8 to rotate downward and compress the first spring 11 until multiple sealing plates 8 cooperate with each other to block the end of the docking pipe 7, so that the airflow in the main pipe 1 advances along the inspection pipe 2, so that the flow conversion component will only change the direction of the airflow in the main pipe 1 when the inspection pipe 2 is disassembled.

[0042] As a preferred solution of the present invention, the maximum rotation angle of the multiple sealing plates 8 is 180°.

[0043] As a further explanation of this embodiment, in this embodiment, the fixed connection between the main pipe 1 and the inspection pipe 2 is the normal state of the ventilation device. Therefore, the end of the docking pipe 7 in this embodiment is in a closed state for a long time and cannot be ventilated. Therefore, when the sealing plate 8 blocks the docking pipe 7, some dust or debris may penetrate into the docking pipe 7 along the gap of the sealing plate 8 and accumulate. Therefore, when the ventilation device is inspected and maintained, when the sealing plate 8 is rotated 180° to open the docking pipe 7, the debris in the docking pipe 7 is blown away by the airflow, but the side wall of the sealing plate 8 facing the docking pipe 7 cannot be cleaned. Therefore, when the sealing plate 8 is rotated 180°, the inner side wall of the sealing plate 8 faces the air duct in the main pipe 1, and the side wall of the sealing plate 8 is washed by the airflow in the main pipe 1 to avoid impurities adhering to the side wall of the sealing plate 8, and the through groove 5 can accommodate the completely flipped sealing plate 8, so that the sealing plate 8 cooperates with the through groove 5 to avoid air leakage when the through groove 5 is docked with the docking pipe 7.

[0044] As a preferred solution of the present invention, a torsion spring 19 is provided in the hinge 4 , and two ends of the torsion spring 19 respectively press against the side walls of the two baffles 3 .

[0045] As a further explanation of this embodiment, in this embodiment, the torsion spring 19 always presses against the side wall of the baffle 3, so that the side wall of the baffle 3 is always in contact with the inner wall of the main pipe 1, avoiding the two hinged baffles 3 from rotating during the reciprocating sliding process, thereby reducing the effect of the baffle 3 in sealing the airflow direction in the main pipe 1.

[0046] As a preferred solution of the present invention, limit bars 20 are provided on both sides of the chute 13 in the main pipeline 1 .

[0047] As a further explanation of this embodiment, in this embodiment, the inspection pipe 2 is fixedly connected to the main pipe 1. During the flow of air in the main pipe 1, if the baffle 3 is always in a state where the side wall is in contact with the inner wall of the main pipe 1, the airflow can only pass along the passage groove 5. Part of the airflow hits the side wall of the baffle 3, which may cause certain interference to the airflow rate. Therefore, a limit bar 20 is set on both sides of the slide 13. When the top support plate 16 drives the slide to reset along the slide 13, the side wall of the baffle 3 resists the limit bar 20, causing the two baffles 3 to rotate close to each other until the two baffles 3 are completely in contact, and the side walls of the two baffles 3 are parallel to the airflow direction in the main pipe 1, which can reduce the interference of the baffle 3 on the airflow rate in the main pipe 1, so that the ventilation effect of this device is better.

[0048] As a preferred embodiment of the present invention, the maintenance pipeline 2 includes two spliced ​​pipelines, and the two spliced ​​pipelines are fixedly connected to form the maintenance pipeline 2.

[0049] As a further illustration of an embodiment of the present invention, the maintenance pipe 2 in this embodiment is composed of two spliced ​​pipes fixedly connected, making it easier to disassemble and assemble the maintenance pipe 2 without affecting the docking pipe 7 arranged in the maintenance pipe 2.

[0050] The embodiments and / or implementation methods described above are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the present invention, and do not impose any form of limitation on the implementation methods of the technology of the present invention. Any person skilled in the art may make slight changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as technologies or embodiments that are essentially the same as the present invention.

Claims

1. A ventilation device for a mine, comprising a main pipe (1), characterized in that: The end of the main pipeline (1) is detachably connected to a maintenance pipeline (2), and a flow-changing component for changing the flow direction of the airflow in the main pipeline (1) is installed in the main pipeline (1). After the maintenance pipeline (2) is removed, the flow-changing component changes the flow direction of the airflow in the main pipeline (1); The flow-changing assembly comprises two baffles (3) slidably mounted in the main pipe (1), and the two baffles (3) are hinged to each other via hinges (4), and a plurality of passage slots (5) for airflow to pass through are provided in the two baffles (3), a mounting frame (6) is fixedly mounted in the main pipe (1), a plurality of docking pipes (7) are fixedly mounted in the mounting frame (6), and an elastic blocking device for blocking the docking pipes (7) is provided at the end of the docking pipe (7), and an elastic supporting device for supporting the baffles (3) is provided in the main pipe (1). When the repair pipe (2) is separated from the main pipe (1), the airflow in the main pipe (1) is transported backward along the docking pipe (7), and the same limiting bracket (18) is slidably installed on the outside of the plurality of docking pipes (7), and the limiting bracket (18) is fixedly connected to the elastic supporting device. When the repair pipe (2) is fixedly connected to the main pipe (1), the limiting bracket (18) drives the elastic blocking device to block the openings of the plurality of docking pipes (7), and the limiting bracket (18) drives the elastic supporting device to move the baffle (3) away from the docking pipe (7).

2. The mine ventilation device according to claim 1, characterized in that: The elastic sealing device includes a plurality of sealing plates (8) rotatably mounted on the end of the docking pipe (7), the plurality of sealing plates (8) cooperate with each other and seal the end opening of the docking pipe (7), the side wall of the sealing plate (8) is hinged with an arc-shaped hinged rod (9), the end of the arc-shaped hinged rod (9) away from the sealing plate (8) is hinged with a slide (10), and the slide (10) is slidably mounted on the outer wall of the docking pipe (7), the top of the slide (10) is sleeved with a first spring (11), and one end of the first spring (11) is pressed against the side wall of the mounting frame (6), and the other end is pressed against the side wall of the slide (10).

3. The mine ventilation device according to claim 1, characterized in that: The elastic supporting device comprises a slide plate (12) slidably mounted in the main pipe (1), a slide groove (13) for the slide plate (12) to slide is provided in the main pipe (1), the top and bottom of the baffle (3) are rotatably connected to pulleys (14), and the side wall of the slide plate (12) abuts against the side wall of the pulley (14), a second spring (15) is placed in the slide groove (13), and the two ends of the second spring (15) respectively abut against the side wall of the slide groove (13) and the side wall of the slide plate (12).

4. The mine ventilation device according to claim 3, characterized in that: A top support plate (16) is slidably installed in the slide groove (13), and the side wall of the top support plate (16) contacts the side wall of the pulley (14). A limit plate (17) for limiting the sliding distance of the top support plate (16) is fixedly connected to the top of the top support plate (16), and the end of the top support plate (16) away from the pulley (14) is fixedly connected to the limit bracket (18).

5. The mine ventilation device according to claim 2, characterized in that: The maximum rotation angle of the plurality of sealing plates (8) is 180°.

6. The mine ventilation device according to claim 1, characterized in that: A torsion spring (19) is provided in the hinge (4), and two ends of the torsion spring (19) respectively press against the side walls of the two baffles (3).

7. The mine ventilation device according to claim 3, characterized in that: Limiting bars (20) are provided on both sides of the chute (13) in the main pipe (1).

8. The mine ventilation device according to claim 1, characterized in that: The maintenance pipeline (2) comprises two spliced ​​pipelines, and the two spliced ​​pipelines are fixedly connected to form the maintenance pipeline (2).

Images