Ventilation device for coal mining

Abstract

The utility model provides a ventilation device for coal mining, which comprises a pipeline, a fan is arranged in the pipeline, a connecting ring is rotatably arranged on the outer side of the air outlet end of the pipeline, a hose is arranged at the end part of the connecting ring, a fan cover is connected to one end, deviating from the pipeline, of the hose, support plates are fixedly arranged on two sides of the connecting ring, and the fan cover is fixedly connected with the fan cover. The two sides of the fan cover are rotationally connected with the ends of the two supporting plates correspondingly, and a telescopic adjusting mechanism used for adjusting the angle of the fan cover relative to the pipeline is arranged between the fan cover and the connecting ring. According to the utility model, the air outlet angle can be flexibly adjusted, and meanwhile, the fan cover can be stably supported.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mining, and in particular relates to a ventilation device for coal mining. Background Art

[0002] During the mining process, a large number of tunnels are excavated to prepare new levels, new mining areas and mining faces. When excavating tunnels, the excavation face must be ventilated in order to supply sufficient oxygen to the workers and dilute the gas in the excavation face.

[0003] In the prior art, a Chinese utility model patent document with authorization announcement number CN222010264U discloses a coal mine ventilation device, wherein a hose is fixedly connected to the end of the pipe, a wind hood is fixedly connected to the end of the hose, a first annular frame is fixedly connected to the outside of the pipe, a rope is tied to the first annular frame, a second annular frame is fixedly connected to the outside of the wind hood, the end of the rope is tied to the second annular frame, a hose is provided, and the wind hood can be tilted by pulling the rope, thereby adjusting the ventilation direction. When in use, one end of the rope is tied to the first annular frame, and the other end is tied to the second annular frame The first annular frame and the second annular frame are annular structures. The rope can be tied to the first annular frame and the second annular frame in the corresponding direction according to the required ventilation direction. The tilt angle can be adjusted by the length of the rope. This air outlet angle adjustment method is only applicable to the case where the pipeline is installed in the vertical direction. When installed horizontally, the wind hood end will droop due to gravity and the air outlet direction cannot be controlled. In addition, when installed vertically, the rope can only pull the wind hood but cannot provide stable support. When the air is out, the wind hood and the hose are not stable and are prone to swing.

[0004] Therefore, it is necessary to design a ventilation device for coal mining that can flexibly adjust the air outlet angle and provide stable support for the wind hood to solve the current technical problems. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the utility model provides a ventilation device for coal mining that can flexibly adjust the air outlet angle and provide stable support for the wind hood.

[0006] The technical solution of the utility model is: a ventilation device for coal mining, comprising a pipeline, a fan is arranged inside the pipeline, a connecting ring is rotatably arranged on the outer side of the air outlet end of the pipeline, a hose is arranged on the end of the connecting ring, an end of the hose facing away from the pipeline is connected to a wind hood, support plates are fixedly arranged on both sides of the connecting ring, both sides of the wind hood are rotatably connected to the ends of the two support plates, and a telescopic adjustment mechanism for adjusting the angle of the wind hood relative to the pipeline is provided between the wind hood and the connecting ring.

[0007] The telescopic adjustment mechanism has a screw tube, and an upper screw and a lower screw with opposite thread directions are respectively assembled inside the two ends of the screw tube. The end of the upper screw rod facing away from the screw tube is hinged with an upper hinge seat, and the upper hinge seat is fixedly arranged on the outside of the connecting ring. The end of the lower screw rod facing away from the screw tube is hinged with a lower hinge seat, and the lower hinge seat is fixedly arranged on the outside of the wind hood.

[0008] The outer sides of the upper screw rod and the lower screw rod are both equipped with locking nuts, and the locking nuts are butted against the ends of the spiral tubes.

[0009] A convex ring is fixedly provided on the outer side of one end of the pipe close to the connecting ring, and a ring groove matching the convex ring is provided on the inner side of the connecting ring. The ring groove is slidably sleeved on the outer side of the convex ring.

[0010] A locking bolt is provided on the outer side of the connecting ring along its radial direction. The locking bolt is threadedly connected to the connecting ring, and the end of the locking bolt abuts against or separates from the outer side of the convex ring.

[0011] Both ends of the hose are provided with mounting edges, and the mounting edges at both ends of the hose are respectively detachably fixedly connected to the connecting ring and the wind cover.

[0012] Beneficial effects of the utility model:

[0013] (1) In the present invention, when the fan inside the pipeline is powered on, it drives the air inside the pipeline to flow, transporting the outside air into the mine, supplying sufficient oxygen to the workers and diluting the gas at the excavation working face;

[0014] (2) The support plate provides stable support for the hood at the end of the pipe. By changing the length of the telescopic adjustment mechanism, the hood can be driven to rotate at the end of the support plate to achieve angle adjustment of the hood relative to the pipe. At the same time, the connecting ring can rotate outside the pipe and adjust the direction of the hood in the circumferential direction of the pipe, thereby achieving flexible adjustment of the air outlet direction of the hood.

[0015] (3) During the adjustment of the hood, the hose ensures the connection between the hood and the pipe without affecting the angle adjustment of the hood. After the adjustment is completed, the telescopic adjustment mechanism and the support plate provide rigid support for the hood to ensure its stability. Whether the pipe is installed longitudinally or horizontally, it can provide stable support for the hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is one of the structural schematic diagrams of the ventilation device for coal mining in the utility model.

[0017] Figure 2 This is the second structural diagram of the ventilation device for coal mining in the utility model.

[0018] Figure 3 This is the third structural diagram of the ventilation device for coal mining in the utility model.

[0019] Figure 4 for Figure 3 Cross-section view at AA in the middle.

[0020] Figure 5 for Figure 4 A partial enlarged view of point B in the middle. DETAILED DESCRIPTION

[0021] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and does not constitute any limitation on the present invention and its application or use. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete and to fully convey the scope of the present invention to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0022] The terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are simply used to distinguish different parts. Terms such as "include" or "comprising" mean that the elements preceding the term include the elements listed after the term, and do not exclude the possibility of also including other elements. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0023] like Figures 1 to 5As shown, a ventilation device for coal mining comprises a pipe 1, a fan 4 is provided inside the pipe 1, a connecting ring 5 is rotatably provided on the outer side of the air outlet end of the pipe 1, a hose 2 is provided at the end of the connecting ring 5, an end of the hose 2 facing away from the pipe 1 is connected to a wind hood 3, support plates 6 are fixedly provided on both sides of the connecting ring 5, both sides of the wind hood 3 are rotatably connected to the ends of the two support plates 6, and a telescopic adjustment mechanism 7 for adjusting the angle of the wind hood 3 relative to the pipe 1 is provided between the wind hood 3 and the connecting ring 5; in this embodiment, after the fan 4 inside the pipe 1 is energized, it drives the air flow inside the pipe 1, and transports the external air into the mine, so as to supply sufficient oxygen to the workers and dilute the gas at the excavation working face; the support plate 6 is aligned with the end of the pipe 1 The wind hood 3 provides stable support. By changing the length of the telescopic adjustment mechanism 7, the wind hood 3 can be driven to rotate at the end of the support plate 6 to achieve angle adjustment of the wind hood 3 relative to the pipe 1, specifically, the angle adjustment between the axis of the wind hood 3 and the axis of the pipe 1. At the same time, the connecting ring 5 can rotate outside the pipe 1 and can adjust the direction of the wind hood 3 in the circumferential direction of the pipe 1 to achieve flexible adjustment of the air outlet direction of the wind hood 3; during the adjustment of the wind hood 3, the hose 2 ensures the connection between the wind hood 3 and the pipe 1 without affecting the angle adjustment of the wind hood 3. After the adjustment is completed, the telescopic adjustment mechanism 7 and the support plate 6 both rigidly support the wind hood 3 to ensure its stability. Regardless of whether the pipe 1 is installed longitudinally or transversely, it can provide stable support for the wind hood 3.

[0024] In some embodiments, the telescopic adjustment mechanism 7 has a screw tube 75, and the two ends of the screw tube 75 are respectively equipped with an upper screw rod 73 and a lower screw rod 74 with opposite thread directions. The end of the upper screw rod 73 facing away from the screw tube 75 is hinged with an upper hinge seat 71, and the upper hinge seat 71 is fixedly set on the outside of the connecting ring 5, and the end of the lower screw rod 74 facing away from the screw tube 75 is hinged with a lower hinge seat 72, and the lower hinge seat 72 is fixedly set on the outside of the wind hood 3; when the screw tube 75 is rotated, the threaded structure between the screw tube 75 and the upper screw rod 73 and the lower screw rod 74 can drive the upper screw rod 73 and the lower screw rod 74 to extend from the inside of the screw tube 75 and retract, thereby changing the length of the telescopic adjustment mechanism 7. The telescopic adjustment mechanism 7 is extended or shortened, and can push or pull the wind hood 3, so that the angle of the wind hood 3 relative to the pipe 1 changes, thereby realizing the adjustment of the air outlet angle.

[0025] In some embodiments, the outer sides of the upper screw rod 73 and the lower screw rod 74 are equipped with locking nuts 76, and the locking nuts 76 are abutted against the ends of the screw tube 75. After the air outlet angle of the air hood 3 is adjusted through the telescopic adjustment mechanism 7, the locking nuts 76 are tightened against the ends of the screw tube 75, and the upper screw rod 73 and the lower screw rod 74 are locked between the screw tube 75 to prevent them from loosening during use and causing changes in the air outlet angle.

[0026] In some embodiments, a convex ring 11 is fixedly provided on the outer side of one end of the pipe 1 near the connecting ring 5, and a ring groove 51 matching the convex ring 11 is provided on the inner side of the connecting ring 5. The ring groove 51 is slidably mounted on the outer side of the convex ring 11, and the connecting ring 5 can rotate on the outer side of the pipe 1. When the connecting ring 5 rotates, the wind hood 3 can be adjusted in the circumferential direction of the pipe 1.

[0027] In some embodiments, a locking bolt 52 is provided on the outer side of the connecting ring 5 along its radial direction, and the locking bolt 52 is threadedly connected to the connecting ring 5, and the end of the locking bolt 52 is abutted against or separated from the outer side of the convex ring 11; before adjusting the wind hood 3 in the circumferential direction of the pipeline 1, it is necessary to first separate the end of the locking bolt 52 from the outer side of the convex ring 11, and then the connecting ring 5 can be rotated for adjustment; after the adjustment is completed, tighten the locking bolt 52 so that the end of the locking bolt 52 is abutted against the outer side of the convex ring 11, and fix the connecting ring 5 to the pipeline 1 to ensure that the angle is fixed during use.

[0028] In some embodiments, both ends of the hose 2 have a mounting edge 21, and the mounting edges 21 at both ends of the hose 2 are detachably fixedly connected to the connecting ring 5 and the wind hood 3 respectively, and the hose 2 is detachable and can be replaced after it is damaged; specifically, the mounting edge 21 at one end of the hose 2 is connected to the end of the wind hood 3 through a bolt and nut mechanism, and the bolts in the bolt and nut mechanism pass through the upper edge of the wind hood 3 and the mounting edge 21, and then a nut is assembled at the other end to fix it; one side of the connecting ring 5 has studs in a circumferential array, the studs pass through the mounting edge 21 at the other end of the hose 2, and a nut is assembled at the end of the stud to fix the mounting edge 21.

[0029] Thus far, various embodiments of the present invention have been described in detail. To avoid obscuring the concept of the present invention, some details well known in the art have not been described. Based on the above description, those skilled in the art will fully understand how to implement the technical solutions disclosed herein.

[0030] The above-described embodiments represent only some of the embodiments of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present utility model, and these modifications and improvements fall within the scope of protection of the present utility model. Therefore, the scope of protection of the present utility model patent shall be based on the appended claims.

Claims

1. A ventilation device for coal mining, comprising a pipe with a fan disposed inside the pipe, characterized in that: A connecting ring is rotatably provided on the outer side of the air outlet end of the pipe, a hose is provided on the end of the connecting ring, an air hood is connected to the end of the hose facing away from the pipe, support plates are fixedly provided on both sides of the connecting ring, and both sides of the air hood are rotatably connected to the ends of the two support plates respectively, and a telescopic adjustment mechanism is provided between the air hood and the connecting ring for adjusting the angle of the air hood relative to the pipe.

2. The ventilation device for coal mining according to claim 1, characterized in that: The telescopic adjustment mechanism has a screw tube, and an upper screw and a lower screw with opposite thread directions are respectively assembled inside the two ends of the screw tube. The end of the upper screw rod facing away from the screw tube is hinged with an upper hinge seat, and the upper hinge seat is fixedly arranged on the outside of the connecting ring. The end of the lower screw rod facing away from the screw tube is hinged with a lower hinge seat, and the lower hinge seat is fixedly arranged on the outside of the wind hood.

3. The ventilation device for coal mining according to claim 2, characterized in that: The outer sides of the upper screw rod and the lower screw rod are both equipped with locking nuts, and the locking nuts are butted against the ends of the spiral tubes.

4. The ventilation device for coal mining according to claim 1, characterized in that: A convex ring is fixedly provided on the outer side of one end of the pipe close to the connecting ring, and a ring groove matching the convex ring is provided on the inner side of the connecting ring. The ring groove is slidably sleeved on the outer side of the convex ring.

5. The ventilation device for coal mining according to claim 4, characterized in that: A locking bolt is provided on the outer side of the connecting ring along its radial direction. The locking bolt is threadedly connected to the connecting ring, and the end of the locking bolt abuts against or separates from the outer side of the convex ring.

6. The ventilation device for coal mining according to claim 1, characterized in that: Both ends of the hose are provided with mounting edges, and the mounting edges at both ends of the hose are respectively detachably fixedly connected to the connecting ring and the wind cover.

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