Ventilation device for coal mining

Abstract

The utility model discloses a ventilation device for coal mining, which belongs to the technical field of ventilation devices and comprises an air collecting pipeline and a Y-shaped pipeline, the Y-shaped pipeline is mounted at one end of the air collecting pipeline, ventilation pipelines are symmetrically mounted at one end, far away from the air collecting pipeline, of the Y-shaped pipeline, and turnover covers are arranged outside the ventilation pipelines. And an L-shaped bracket is arranged outside the air collecting pipeline. According to the ventilation device for coal mining, the air flow can be conveniently adjusted, ventilation of different areas through multi-stage rotation is facilitated, the ventilation range of the ventilation device is enlarged, the convenience of adjusting the air flow direction during ventilation of the ventilation device is improved, and the situation that gas cannot be conveyed due to shutdown during replacement of a filter screen is avoided; and the convenience of replacing parts of the filter screen without shutdown is improved.

Description

Technical Field

[0001] This utility model relates to the field of ventilation device technology, specifically a ventilation device for coal mine mining. Background Technology

[0002] A good ventilation system can reduce the temperature and humidity in the mine, alleviate the physical exertion of miners, and improve work efficiency. Studies have shown that a reasonable ventilation system can increase the production efficiency of a mine by more than 10%. Ventilation devices can effectively remove harmful gases and dust from the mine, reducing the health hazards caused by miners inhaling these substances and lowering the incidence of respiratory diseases among miners. By controlling the temperature and humidity in the mine, ventilation devices can reduce equipment wear and extend the service life of equipment. Data shows that a good ventilation system can extend the service life of equipment by more than 20%.

[0003] A coal mine ventilation device, as disclosed in authorization announcement number CN221856780U, includes a main pipe with a corrugated pipe connected to its side. An exhaust fan and an installation pipe are installed inside the main pipe. Filter cotton and a hand-held rod are installed inside the installation pipe. A conduit is installed on the outer wall of the main pipe. An exhaust port is connected through the main pipe, and a groove is formed on the outer wall of the exhaust port. A valve is installed inside the exhaust port, and a valve plate is installed inside the valve. A ventilation port is installed on the exhaust port, and a clamping rod is connected to the outer wall of the ventilation port.

[0004] Although it facilitates the filtration of air discharged from coal mines, preventing the environmental pollution caused by the direct discharge of toxic gases, it also allows the valve plate to be reset on the valve to prevent air from flowing out, enabling the entire device to be installed on uneven inner walls, ensuring the installation of multiple sets of assembled pipelines, and simplifying the installation process.

[0005] However, this does not solve the problem that existing ventilation devices of this type are generally not convenient for adjusting the airflow rate, are not easy to rotate in multiple stages to ventilate different areas, thus affecting the ventilation range and the convenience of adjusting the airflow direction. Moreover, filter replacement often requires stopping the machine, which prevents gas delivery and affects the convenience of replacing parts without stopping the machine. Utility Model Content

[0006] The purpose of this utility model is to provide a ventilation device for coal mine mining, so as to solve the problems mentioned in the background art, such as the inconvenience of adjusting the air flow rate, the inconvenience of multi-stage rotation to ventilate different areas, the impact on the ventilation range of the ventilation device, the inconvenience of adjusting the airflow direction during ventilation, and the fact that the replacement of the filter screen often requires stopping the machine, resulting in the inability to deliver gas, thus affecting the convenience of replacing the filter screen without stopping the machine.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0008] A ventilation device for coal mine mining includes an air collection duct and a Y-shaped duct. A Y-shaped duct is installed at one end of the air collection duct, and ventilation ducts are symmetrically installed at the end of the Y-shaped duct away from the air collection duct. Each ventilation duct is equipped with a flip-top cover. An L-shaped support is installed outside the air collection duct, and a hollow sphere is installed inside the L-shaped support. A curved arm is installed outside the hollow sphere, and a hollow spherical sleeve is installed below the curved arm. A valve plate is movably installed inside each ventilation duct. An axial flow fan is installed at the end of each ventilation duct away from the valve plate. A filter screen is installed on the side of each ventilation duct near the axial flow fan. A valve shaft is installed at the center of each valve plate, extending through the valve plate to the outside of the ventilation duct. A stepper motor is installed on the surface of the ventilation duct on one side of the valve shaft, and the output end of each stepper motor is connected to the valve shaft.

[0009] Optionally, a geared disc is installed on the outer wall of the air collection duct near the L-shaped bracket, a servo motor is installed on the side wall of the L-shaped bracket, a gear is installed at the output end of the servo motor, the gear meshes with the geared disc, and a movable ring is movably fitted on the outer wall of the air collection duct near the geared disc.

[0010] Optionally, a positioning frame is installed on the side wall of the L-shaped bracket below the servo motor, the positioning frame is connected to the movable ring, and an electric push rod is movably installed inside the L-shaped bracket above the hollow sphere.

[0011] Optionally, the output end of the electric push rod is equipped with a first shaft, which is connected to the curved arm, and the top end of the hollow ball sleeve is equipped with a support shaft.

[0012] Optionally, the curved arm is connected to the support shaft, and a hollow ball head is installed on the side of the hollow sphere near the hollow ball sleeve, while the side of the hollow ball head away from the hollow sphere is movably connected to the hollow ball sleeve.

[0013] Optionally, a rotating ring is installed at the end of the hollow sphere away from the hollow sphere head, and the rotating ring extends into the interior of the air collection duct.

[0014] Optionally, a groove is installed on the inner wall of the air collection duct near the hollow sphere, and the rotating ring is slidably connected to the groove.

[0015] Optionally, a hinge shaft is installed on the surface of the ventilation duct on one side of the flip cover, and the ventilation duct is movably connected to the flip cover through the hinge shaft.

[0016] Optionally, an upper locking block is installed on the end of the flip cover away from the hinge axis, and a lower locking block is installed on the outer wall of the ventilation duct away from the hinge axis.

[0017] Optionally, bolts are movably installed inside the lower locking block, and the bolts extend through the lower locking block to the outside.

[0018] Compared with the prior art, the beneficial effects of this utility model are: this ventilation device not only enables convenient adjustment of airflow in coal mine ventilation devices, but also facilitates multi-stage rotation for ventilation of different areas, increases the ventilation range of the ventilation device, improves the convenience of adjusting the airflow direction during ventilation, avoids the inability to deliver gas due to machine stoppage during filter replacement, and improves the convenience of replacing filter parts without machine stoppage.

[0019] (1) By installing the air collection duct inside the frame of the coal mine, the air is filtered through the filter screen body and transported to the inside under the action of the axial flow fan. A set of stepper motors are turned on, and the stepper motors drive the valve shaft to rotate. The valve shaft drives the valve plate to rotate, so as to turn a set of ventilation ducts from closed to open state to facilitate gas flow. The air is delivered to the required position through the ventilation duct, Y-shaped duct, air collection duct, hollow ball body, hollow ball head, and hollow ball sleeve. The ventilation volume of the ventilation duct is adjusted by controlling the rotation angle of the valve plate by the stepper motor, so as to facilitate the high-speed delivery of air by the two sets of ventilation ducts. This realizes the convenient adjustment of the air flow of the coal mine ventilation device and improves the convenience of the ventilation device in controlling the air flow rate.

[0020] (2) The servo motor drives the gear to rotate. The gear rotates around the surface of the gear plate. The movable ring rotates on the surface of the air collection pipe for limiting support. The rotating ring slides inside the groove for limiting, so that the servo motor, L-shaped bracket, hollow ball body, hollow ball head and hollow ball sleeve rotate at an angle to facilitate circumferential rotation adjustment. The electric push rod drives the first shaft to move. The first shaft drives the bent arm to move. The bent arm drives the support shaft and hollow ball sleeve to rotate around the hollow ball head at an angle, which facilitates multi-angle rotation for ventilation. It realizes convenient multi-stage rotation of the ventilation device to ventilate different areas, increases the ventilation range of the ventilation device, and improves the convenience of adjusting the airflow direction when the ventilation device is ventilating.

[0021] (3) When it is necessary to replace a set of internal components of the ventilation duct, one set of stepper motors is turned off to close the duct of the component to be replaced, and another set of stepper motors is turned on to continuously ventilate. When it is necessary to replace the filter body, the bolts are unscrewed so that the upper clamping block disengages from the lower clamping block. The flip cover of the duct of the component to be replaced is opened. Under the support of the hinge shaft, the flip cover drives the upper clamping block to rotate on the surface of the ventilation duct with the hinge shaft as the axis. This makes it convenient for the staff to disassemble and replace the internal components of the ventilation duct, so as to facilitate the replacement of the filter without stopping the machine, and to facilitate the continuous and efficient delivery of gas. This realizes the convenient replacement of the filter without stopping the ventilation device, avoids the inability to deliver gas when the machine stops during the replacement of the filter, and improves the convenience of replacing the filter without stopping the machine. Attached Figure Description

[0022] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present invention and, together with the specification, further serve to explain the principles of the present invention and enable those skilled in the art to implement and use the present invention.

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a front view structural diagram of the present utility model;

[0025] Figure 3 This is a front view cross-sectional structural diagram of the hollow sphere of this utility model;

[0026] Figure 4 This is a three-dimensional structural diagram of the flip cover of this utility model;

[0027] Figure 5 This is a three-dimensional structural diagram of the axial flow fan of this utility model;

[0028] Figure 6 This is a three-dimensional structural diagram of the valve plate of this utility model;

[0029] Figure 7 This is a three-dimensional structural diagram of the hollow spherical sleeve of this utility model;

[0030] Figure 8 This is a three-dimensional structural diagram of the L-shaped bracket of this utility model.

[0031] [Figure Labels]

[0032] 1. Air collection duct; 2. Ventilation duct; 3. Y-shaped duct; 4. Hollow spherical body; 5. L-shaped bracket; 6. Hollow spherical sleeve; 7. Servo motor; 8. Gear; 9. Gear plate; 10. Movable ring; 11. Electric push rod; 12. First shaft; 13. Bent arm; 14. Support shaft; 15. Valve plate; 16. Axial flow fan; 17. Filter screen body; 18. Stepper motor; 19. Valve shaft; 20. Hollow ball head; 21. Rotating ring; 22. Flip cover; 23. Lower locking block; 24. Bolt; 25. Upper locking block; 26. Groove; 27. Positioning frame; 28. Hinge shaft.

[0033] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0034] The following is a detailed description of a coal mine ventilation device provided by this utility model, in conjunction with the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0035] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0036] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0037] It is understood that the meanings of “on”, “above”, and “above” in this utility model should be interpreted in the broadest manner, such that “on” not only means “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” not only means “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0038] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0039] Please see Figure 1-8 This utility model provides an embodiment of a coal mine ventilation device, comprising an air collecting duct 1 and a Y-shaped duct 3. The Y-shaped duct 3 is installed at one end of the air collecting duct 1, and ventilation ducts 2 are symmetrically installed at the end of the Y-shaped duct 3 away from the air collecting duct 1. Each ventilation duct 2 is externally fitted with a flip-top cover 22. An L-shaped support 5 is installed externally to the air collecting duct 1. A hollow sphere 4 is installed inside the L-shaped support 5. A curved arm 13 is installed externally to the hollow sphere 4, and a central... A valve plate 15 is movably installed inside the hollow ball sleeve 6 and the ventilation duct 2. An axial flow fan 16 is installed at the end of the ventilation duct 2 away from the valve plate 15. A filter screen body 17 is installed on the side of the ventilation duct 2 close to the axial flow fan 16. A valve shaft 19 is installed at the center of the valve plate 15. The valve shaft 19 extends through the valve plate 15 to the outside of the ventilation duct 2. A stepper motor 18 is installed on the surface of the ventilation duct 2 on one side of the valve shaft 19. The output end of the stepper motor 18 is connected to the valve shaft 19.

[0040] By installing the air collection duct 1 inside the frame of the coal mine, the air is filtered through the filter body 17 and transported inward under the action of the axial flow fan 16. A set of stepper motors 18 are turned on. With the support of the ventilation duct 2, the stepper motors 18 drive the valve shaft 19 to rotate. The valve shaft 19 drives the valve plate 15 to rotate, so as to turn the set of ventilation ducts 2 from closed to open, so as to facilitate the flow of gas. The air is delivered to the required position through the ventilation duct 2, Y-shaped duct 3, air collection duct 1, hollow ball body 4, hollow ball head 20, and hollow ball sleeve 6. The ventilation volume of the ventilation duct 2 is adjusted by controlling the rotation angle of the valve plate 15 through the stepper motor 18, so as to facilitate the high-speed delivery of air by the two sets of ventilation ducts 2, thus realizing the ventilation device for coal mine mining.

[0041] A gear 9 is installed on the outer wall of the air collection duct 1 near the L-shaped bracket 5. A servo motor 7 is installed on the side wall of the L-shaped bracket 5. A gear 8 is installed at the output end of the servo motor 7. The gear 8 meshes with the gear 9. A movable ring 10 is movably fitted on the outer wall of the air collection duct 1 near the gear 9.

[0042] A positioning frame 27 is installed on the side wall of the L-shaped bracket 5 below the servo motor 7. The positioning frame 27 is connected to the movable ring 10. An electric push rod 11 is movably installed inside the L-shaped bracket 5 above the hollow ball body 4. A first shaft 12 is installed at the output end of the electric push rod 11. The first shaft 12 is connected to the bent arm 13. A support shaft 14 is installed at the top of the hollow ball sleeve 6.

[0043] The curved arm 13 is connected to the support shaft 14. A hollow ball head 20 is installed on the side of the hollow spherical body 4 near the hollow ball sleeve 6. The side of the hollow ball head 20 away from the hollow spherical body 4 is movably connected to the hollow ball sleeve 6. A rotating ring 21 is installed on the end of the hollow spherical body 4 away from the hollow ball head 20, and the rotating ring 21 extends into the interior of the air collection duct 1.

[0044] A groove 26 is installed on the inner wall of the air collection duct 1 near the hollow sphere 4, and the rotating ring 21 is slidably connected to the groove 26;

[0045] When ventilation is required for different areas and angles, the servo motor 7 is turned on. Supported by the L-shaped bracket 5, the servo motor 7 drives the gear 8 to rotate. Under the meshing of the gear 8 and the gear disk 9, the gear 8 rotates around the surface of the gear disk 9. The movable ring 10 rotates on the surface of the air collection duct 1 for limiting support. Under the limiting of the sliding of the rotating ring 21 inside the groove 26, the servo motor 7, the L-shaped bracket 5, the hollow ball body 4, the hollow ball head 20, and the hollow ball sleeve 6 rotate at an angle to facilitate circumferential rotation adjustment. The electric push rod 11 is turned on. Supported by the L-shaped bracket 5, the electric push rod 11 drives the first shaft 12 to move. The first shaft 12 drives the bent arm 13 to move. The bent arm 13 drives the support shaft 14 and the hollow ball sleeve 6 to rotate around the hollow ball head 20 at an angle, which facilitates multi-angle rotation for ventilation. It realizes convenient multi-stage rotation of the ventilation device to ventilate different areas, increases the ventilation range of the ventilation device, and improves the convenience of adjusting the airflow direction when the ventilation device is ventilating.

[0046] Hinges 28 are installed on the surface of the ventilation duct 2 on one side of the flip cover 22. The ventilation duct 2 is movably connected to the flip cover 22 through the hinges 28. An upper latch 25 is installed on the end of the flip cover 22 away from the hinges 28. A lower latch 23 is installed on the outer wall of the ventilation duct 2 on the side away from the hinges 28.

[0047] Bolts 24 are movably installed inside the lower locking block 23, and the bolts 24 extend through the lower locking block 23 to the outside.

[0048] When it is necessary to replace a set of internal components of ventilation duct 2, turn off one set of stepper motors 18 to close the duct containing the component to be replaced, and turn on another set of stepper motors 18 to continue ventilation. When it is necessary to replace the filter body 17, unscrew the bolts 24 to disengage the upper locking block 25 from the lower locking block 23, open the flip cover 22 of the duct containing the component to be replaced, and under the support of the hinge shaft 28, the flip cover 22 drives the upper locking block 25 to rotate on the surface of ventilation duct 2 around the hinge shaft 28. This facilitates the disassembly and replacement of internal components of ventilation duct 2 by the staff, allowing for filter replacement without stopping the machine and facilitating continuous and efficient gas delivery. This enables convenient filter replacement without stopping the ventilation device, avoiding the inability to deliver gas when the machine stops during filter replacement, and improving the convenience of filter replacement without stopping the machine.

[0049] The working principle of this utility model is as follows: By installing the air collection duct 1 inside the frame of the coal mine, the air is filtered through the filter screen body 17 and transported inward under the action of the axial flow fan 16. A set of stepper motors 18 are turned on, and the stepper motors 18 drive the valve shaft 19 to rotate. The valve shaft 19 drives the valve plate 15 to rotate, thereby turning a set of ventilation ducts 2 from closed to open to facilitate gas flow. The air is delivered to the required position through the ventilation duct 2, Y-shaped duct 3, air collection duct 1, hollow ball body 4, hollow ball head 20, and hollow ball sleeve 6. The ventilation volume of the ventilation duct 2 is adjusted by controlling the rotation angle of the valve plate 15 through the stepper motor 18, so as to facilitate high-speed air delivery between the two sets of ventilation ducts 2. The servo motor 7 drives the gear 8 to rotate. The gear 8 rotates around the surface of the gear disk 9. The movable ring 10 rotates on the surface of the air collection duct 1 for limiting support. The rotating ring 21 slides inside the groove 26 for limiting, so that the servo motor 7, L-shaped bracket 5, hollow ball body 4, and other components can move freely. The hollow ball head 20 and hollow ball sleeve 6 rotate at an angle to facilitate circumferential rotation adjustment. The electric push rod 11 drives the first shaft 12 to move, the first shaft 12 drives the bent arm 13 to move, and the bent arm 13 drives the support shaft 14 and hollow ball sleeve 6 to rotate around the hollow ball head 20 at an angle, facilitating multi-angle rotation for ventilation. When it is necessary to replace a set of internal components of the ventilation duct 2, one set of stepper motors 18 is turned off to close the duct of the component to be replaced, and another set of stepper motors 18 is turned on to continue ventilation. When it is necessary to replace the filter screen body 17, the bolt 24 is unscrewed so that the upper locking block 25 disengages from the lower locking block 23, and the flip cover 22 of the duct of the component to be replaced is opened. Under the support of the hinge shaft 28, the flip cover 22 drives the upper locking block 25 to rotate on the surface of the ventilation duct 2 with the hinge shaft 28 as the axis, so as to facilitate the disassembly and replacement of internal components of the ventilation duct 2 by the staff, so as to facilitate filter screen replacement without stopping the machine, and to facilitate continuous and efficient gas delivery to complete the operation of the ventilation device.

[0050] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0051] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A ventilation device for coal mine mining, characterized in that: The system includes a collection duct and a Y-shaped duct. A Y-shaped duct is installed at one end of the collection duct, and ventilation ducts are symmetrically installed at the end of the Y-shaped duct furthest from the collection duct. Each ventilation duct has a flip-up cover on its exterior. An L-shaped bracket is installed on the exterior of the collection duct, and a hollow sphere is installed inside the L-shaped bracket. A curved arm is installed on the exterior of the hollow sphere below the curved arm. A hollow sphere sleeve is installed on the exterior of the hollow sphere. A valve plate is movably installed inside each ventilation duct. An axial flow fan is installed at the end of each ventilation duct furthest from the valve plate. A filter body is installed on the side of each ventilation duct closest to the axial flow fan. A valve shaft is installed at the center of each valve plate, extending through the valve plate to the exterior of the ventilation duct. A stepper motor is installed on the surface of the ventilation duct on one side of the valve shaft, and the output end of each stepper motor is connected to the valve shaft.

2. The coal mine ventilation device according to claim 1, characterized in that: A geared disc is installed on the outer wall of the air collection duct near the L-shaped bracket. A servo motor is installed on the side wall of the L-shaped bracket. A gear is installed at the output end of the servo motor. The gear meshes with the geared disc. A movable ring is movably fitted on the outer wall of the air collection duct near the geared disc.

3. The coal mine ventilation device according to claim 2, characterized in that: A positioning frame is installed on the side wall of the L-shaped bracket below the servo motor. The positioning frame is connected to the movable ring. An electric push rod is movably installed inside the L-shaped bracket above the hollow sphere.

4. The coal mine ventilation device according to claim 3, characterized in that: The output end of the electric push rod is equipped with a first shaft, which is connected to the curved arm. The top of the hollow ball sleeve is equipped with a support shaft.

5. The coal mine ventilation device according to claim 1, characterized in that: The curved arm is connected to the support shaft, and a hollow ball head is installed on the side of the hollow sphere near the hollow ball sleeve. The side of the hollow ball head away from the hollow sphere is movably connected to the hollow ball sleeve.

6. The coal mine ventilation device according to claim 1, characterized in that: A rotating ring is installed at the end of the hollow sphere away from the hollow sphere head, and the rotating ring extends into the interior of the air collection duct.

7. The coal mine ventilation device according to claim 6, characterized in that: The air collection duct has a groove installed on the inner wall near the hollow sphere, and the rotating ring is slidably connected to the groove.

8. The coal mine ventilation device according to claim 1, characterized in that: The ventilation duct surface on one side of the flip cover is equipped with a hinge shaft, and the ventilation duct is movably connected to the flip cover through the hinge shaft.

9. The coal mine ventilation device according to claim 1, characterized in that: The flip cover is equipped with an upper locking block at the end away from the hinge axis, and the ventilation duct is equipped with a lower locking block on the outer wall away from the hinge axis.

10. The coal mine ventilation device according to claim 9, characterized in that: Bolts are movably installed inside each of the lower locking blocks, and the bolts extend through the lower locking blocks to the outside.

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