Ventilation and dust removal device for coal mine operation

Abstract

The application provides a coal mine operation ventilation and dust removal device, and relates to the technical field of coal mine operation equipment. The device comprises a casing, a first drive, a fan blade, a mounting bracket and a second drive. The casing is provided with a dust removal cavity and has an air inlet and an air outlet which are in communication with the dust removal cavity. The first drive is located in the dust removal cavity and is in transmission connection with the fan blade. The fan blade is closer to the air inlet than to the air outlet. The mounting bracket is in transmission connection with the first drive and is pivotally mounted in the dust removal cavity together with the fan blade. The second drive is mounted on the casing and is in transmission connection with the mounting bracket. The application can adjust the angle of the fan blade relative to the air inlet in the dust removal device, effectively increases the ventilation range, allows more gas to enter the dust removal device for filtration treatment, and improves the ventilation and dust removal efficiency.

Description

Technical Field

[0001] This application relates to the field of coal mine operation equipment technology, and in particular to a coal mine operation ventilation and dust removal device. Background Technology

[0002] Coal mines are divided into underground coal mines and open-pit coal mines. Underground coal mines extract coal by excavating tunnels underground. During the coal mining process, a large amount of harmful gases such as methane and dust are generated in the tunnels. If these harmful gases and dust are not dealt with in time, they will seriously endanger the health and safety of workers.

[0003] In related technologies, to address the hazards posed by harmful gases and dust in mine tunnels to production operations, ventilation and dust removal equipment is typically installed in the tunnels. This equipment uses blowers to create negative pressure, drawing harmful gases and dust into the equipment for filtration, thus improving air quality within the tunnel. However, existing coal mine dust removal equipment has fixed blower positions, limiting its ability to handle harmful gases and dust, resulting in insufficient ventilation efficiency. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, embodiments of the present invention propose a ventilation and dust removal device for coal mine operations. This device can adjust the angle of the fan blades relative to the air inlet within the dust removal device, effectively increasing the ventilation range and allowing more gas to enter the dust removal device for filtration, thereby improving ventilation and dust removal efficiency.

[0006] A coal mine ventilation and dust removal device according to an embodiment of the present invention includes a housing, a first drive, fan blades, a mounting frame, and a second drive.

[0007] The casing is provided with a dust removal chamber and has an air inlet and an air outlet communicating with the dust removal chamber;

[0008] The first drive is located in the dust removal chamber and is connected to the fan blade drive. The fan blade is closer to the air inlet than the air outlet. The mounting bracket is connected to the first drive and can be pivotally mounted in the dust removal chamber along with the fan blade.

[0009] The second drive is mounted on the housing and is connected to the mounting bracket in a driving manner.

[0010] According to an embodiment of the coal mine ventilation and dust removal device of the present invention, a blower structure is formed by a first drive and fan blades. When the first drive drives the fan blades to rotate, harmful gases and dust in the roadway can enter the dust removal chamber through the air inlet for treatment. The first drive is mounted on a mounting frame, and the second drive is connected to the mounting frame for transmission. The second drive can drive the blower structure to swing in the dust removal chamber with the help of the mounting frame, adjusting the angle of the blower structure relative to the air inlet, and widening the blower coverage area of ​​the dust removal device at a fixed position in the roadway. Therefore, compared with related technologies, this application can adjust the angle of the fan blades relative to the air inlet in the dust removal device, effectively increasing the ventilation range, allowing more gas to enter the dust removal device for filtration, and improving the ventilation and dust removal efficiency.

[0011] In some embodiments, the coal mine operation ventilation and dust removal device further includes a clamping plate and a locking member. The clamping plate is slidably connected to the mounting frame and has a locking position pressed against the first drive and an unlocking position spaced apart from the first drive. The locking member is capable of locking the clamping plate and the mounting frame when the clamping plate is in the locking position.

[0012] In some embodiments, the second drive is tractively connected to the mounting frame via a rotating rod, the rotating rod being pivotally mounted within the dust removal chamber;

[0013] The coal mine operation ventilation and dust removal device also includes a connecting rod connected to the rotating rod. One of the connecting rod and the clamping plate is provided with a threaded hole, and the other is provided with a mounting hole. The threaded hole and the mounting hole are arranged coaxially. The locking member is threadedly engaged with the threaded hole and slidably engaged with the mounting hole.

[0014] In some embodiments, the first drive is a motor, there are two clamping plates which are disposed on the outer side of the motor along the axial direction of the rotating rod, the clamping plates have an arcuate surface that presses against the peripheral wall of the motor in the locked position, and there are two connecting rods which correspond one to one of the clamping plates.

[0015] In some embodiments, the mounting bracket includes a first mounting plate and a second mounting plate connected together. The first mounting plate is on which the first drive is mounted and has a weight reduction hole and a slide groove. The clamping plate is slidably connected to the slide groove via a guide block. The second mounting plate is connected to the rotating rod.

[0016] In some embodiments, the second mounting plate has a through hole and a bayonet that are connected to each other, the rotating rod is slidably engaged with the through hole, and a locking block is provided on the peripheral wall of the rotating rod, the locking block being slidably engaged in the bayonet.

[0017] In some embodiments, the coal mine operation ventilation and dust removal device further includes a protective cover connected to the mounting frame, the protective cover being located between the mounting frame and the fan blades and spaced apart from the inner wall surface of the housing, the protective cover being used to shield the first drive.

[0018] In some embodiments, the coal mine operation ventilation and dust removal device further includes a filter screen, which is provided near at least one of the air inlet and the air outlet, and the filter screen is installed in the dust removal chamber.

[0019] In some embodiments, the housing further has a mounting port communicating with the dust removal chamber, and at least a portion of the filter screen is slidably connected to the mounting port or the inner wall surface of the housing.

[0020] In some embodiments, the coal mine operation ventilation and dust removal device further includes a protective net and an exhaust hood, wherein the protective net is installed in conjunction with the air inlet and the exhaust hood is installed in conjunction with the air outlet.

[0021] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a coal mine ventilation and dust removal device according to an embodiment of the present invention, viewed from a first perspective.

[0023] Figure 2 This is a schematic diagram of the structure of a coal mine ventilation and dust removal device according to an embodiment of the present invention from a second perspective (the protective net has been removed from the figure).

[0024] Figure 3 This is a schematic diagram of the connection structure between the protective cover, mounting frame, first drive, clamping plate, locking member, connecting rod and rotating rod in the coal mine operation ventilation and dust removal device according to an embodiment of the present invention, viewed from a first perspective.

[0025] Figure 4 This is a schematic diagram of the connection structure between the mounting frame, first drive, clamping plate, locking member, connecting rod and rotating rod in the coal mine ventilation and dust removal device according to an embodiment of the present invention, viewed from a second perspective.

[0026] Reference numerals: 1. Housing; 11. Mounting port; 2. First drive; 3. Fan blade; 4. Mounting bracket; 41. Clamping plate; 411. Guide block; 42. Locking element; 43. First mounting plate; 431. Weight reduction hole; 432. Slide groove; 44. Second mounting plate; 5. Second drive; 51. Rotating rod; 52. Connecting rod; 6. Protective cover; 7. Filter screen; 8. Protective net; 9. Air outlet cover. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0028] like Figures 1 to 3 As shown, a coal mine ventilation and dust removal device according to an embodiment of the present invention includes a housing 1, a first drive 2, a fan blade 3, a mounting frame 4, and a second drive 5.

[0029] The casing 1 is provided with a dust removal chamber and has an air inlet and an air outlet connected to the dust removal chamber.

[0030] The first drive 2 is located in the dust removal chamber and is connected to the fan blade 3 via a transmission. The fan blade 3 is closer to the air inlet than the air outlet. The mounting bracket 4 is connected to the first drive 2 and can be pivotally installed in the dust removal chamber along with the fan blade 3.

[0031] The second drive 5 is mounted on the housing 1 and is connected to the mounting bracket 4 for transmission.

[0032] According to an embodiment of the coal mine ventilation and dust removal device of the present invention, a blower structure is formed by a first drive 2 and a fan blade 3. When the first drive 2 drives the fan blade 3 to rotate, harmful gases and dust in the roadway can enter the dust removal chamber through the air inlet for treatment. The first drive 2 is mounted on a mounting frame 4, and a second drive 5 is connected to the mounting frame 4. The second drive 5 can drive the blower structure to swing in the dust removal chamber with the help of the mounting frame 4, adjusting the angle of the blower structure relative to the air inlet, and widening the blower coverage area of ​​the dust removal device at a fixed position in the roadway. Therefore, compared with related technologies, this application can adjust the angle of the fan blade 3 relative to the air inlet in the dust removal device, effectively increasing the ventilation range, allowing more gas to enter the dust removal device for filtration, and improving the ventilation and dust removal efficiency.

[0033] Specifically, the air inlet and air outlet can be along Figure 1 The components are arranged on the casing 1 in a front-to-back direction, with the air inlet in front of the air outlet. The first drive 2, mounting bracket 4, and fan blade 3 can be positioned along... Figure 2 The components are arranged sequentially from back to front. The first drive 2 can be located in front of the air outlet. The direction of the pivot axis of the fan blade 3 can be... Figure 2 In the front-to-back direction, fan blade 3 is located behind the air inlet. The direction of the pivot axis of mounting bracket 4 can be... Figure 2 The second drive 5 can be installed on the left side outside the housing 1. The second drive 5 is not limited to a bidirectional motor. The output end of the motor shaft of the bidirectional motor is connected to the mounting bracket 4. The forward and reverse rotation of the bidirectional motor drives the mounting bracket 4 to swing up and down in the dust removal chamber, thereby changing the angle of the fan blade 3 relative to the air inlet and increasing the blowing range of the fan blade 3. The structure is simple and highly practical.

[0034] It should be noted that the dust removal device may also include a controller, dust suppression nozzles, and a drain outlet. The specific structure and working principle of this part can adopt existing technology in this field, so they will not be described in detail here. The first drive 2, the second drive 5, and the dust suppression nozzles are all electrically connected to the controller. The water outlet of the dust suppression nozzles extends into the dust removal chamber, and the drain outlet is located on the bottom wall of the housing 1. The controller controls the operation of the first drive 2, the second drive 5, and the dust suppression nozzles. The first drive 2 drives the fan blades 3 to rotate, creating a negative pressure inside the dust removal chamber. Under the action of the pressure difference, harmful gases and dust in the roadway enter the dust removal chamber through the air inlet. After the water sprayed by the dust suppression nozzles suppresses the dust in the gas, the wastewater is discharged through the drain outlet, while the filtered gas is discharged through the air outlet, thereby achieving the treatment of harmful gases and dust in the roadway.

[0035] like Figure 3 As shown, in some embodiments, the ventilation and dust removal device for coal mine operations also includes a clamping plate 41 and a locking member 42. The clamping plate 41 is slidably connected to the mounting frame 4 and has a locking position that presses against the first drive 2 and an unlocking position that is spaced apart from the first drive 2. The locking member 42 can lock the clamping plate 41 and the mounting frame 4 when the clamping plate 41 is in the locking position.

[0036] The clamping plate 41 can clamp and limit the first drive 2 on the mounting frame 4, while the locking member 42 locks both, so as to realize the reliable installation of the first drive 2 on the mounting frame 4. The structure of the clamping plate 41 and the locking member 42 can facilitate the installation and removal of the first drive 2 on the mounting frame 4. At the same time, since the clamping plate 41 is slidably connected to the mounting frame 4, it can meet the connection between the first drive 2 of various specifications and the mounting frame 4, further improving the applicability of the dust removal device.

[0037] Specifically, the clamping plate 41 may be located behind the mounting bracket 4. The locking member 42 may be not limited to one of bolts, screws, bolts and threaded rods, and at least a portion of the locking member 42 is connected to the clamping plate 41. Tightening the locking member 42 locks the clamping plate 41 onto the mounting bracket 4.

[0038] like Figure 2 and Figure 3 As shown, in some embodiments, the second drive 5 is connected to the mounting frame 4 via a rotating rod 51, which is pivotally mounted inside the dust removal chamber.

[0039] The ventilation and dust removal device for coal mine operations also includes a connecting rod 52 connected to the rotating rod 51. One of the connecting rod 52 and the clamping plate 41 is provided with a threaded hole, and the other is provided with a mounting hole. The threaded hole and the mounting hole are arranged coaxially. The locking member 42 is threadedly engaged with the threaded hole and slidably engaged with the mounting hole.

[0040] The second drive 5 drives the mounting frame 4 to pivot in the dust removal chamber via the rotating rod 51. The structure is simple, and the locking part 42, in cooperation with the threaded hole and the mounting hole, can lock the clamp 41 on the mounting frame 4. The operation is convenient, and the locking force formed by the threaded structure is highly reliable.

[0041] Specifically, the axial direction of the rotating rod 51 can be... Figure 2 The rotating rod 51 is oriented left and right, and its left end can be connected to the output end of the motor shaft of the second drive 5 via a coupling. The left end of the rotating rod 51 is supported by a bearing on the left inner wall of the housing 1, and the right end of the rotating rod 51 is supported by a bearing on the right inner wall of the housing 1, so that the rotating rod 51 can rotate stably within the dust removal chamber. The connecting rod 52 and the clamping plate 41 can rotate along... Figure 2 The connecting rods 52 are arranged in a left-right direction outside the second drive 5, and are closer to the left or right inner wall of the housing 1 than the clamping plate 41. The first end of the connecting rod 52 can be connected to the rotating rod 51 through a fixed sleeve, that is, the fixed sleeve is fitted onto the rotating rod 51, and the peripheral wall of the fixed sleeve is not limited to being fixed to the first end of the connecting rod 52 by welding. The second end of the connecting rod 52 can be provided with an internal threaded hole or a mounting hole. A sleeve can be integrally formed on the wall of the clamping plate 41 facing away from the second drive 5. The sleeve can be provided with a mounting hole or an internal threaded hole. The locking member 42 passes through the second end of the connecting rod 52 and extends into the sleeve to push the clamping plate 41 against the first drive 2.

[0042] like Figure 3 and Figure 4 As shown, in some embodiments, the first drive 2 is a motor, there are two clamping plates 41 which are respectively disposed on the outside of the motor along the axial direction of the rotating rod 51, the clamping plates 41 have an arc-shaped surface that presses against the peripheral wall surface of the motor in the locked position, and there are two connecting rods 52 which correspond one to one with the clamping plates 41.

[0043] The two clamping plates 41 can be used together to facilitate the installation and removal of the motor on the mounting bracket 4. At the same time, since the clamping plate 41 contacts the peripheral wall of the motor with an arc-shaped surface, at least a line contact is formed between the two. Compared with the point contact between the clamping plate 41 and the peripheral wall of the motor with a plane, the arc-shaped surface design increases the contact area between the two, which not only ensures the reliability of the clamping plate 41 in holding the motor, but also effectively avoids the problem that point contact can easily cause stress concentration and damage to the peripheral wall of the motor.

[0044] Specifically, to improve control accuracy, the first drive 2 is not limited to a servo motor. The servo motor can move along... Figure 2 The motor is mounted on the mounting bracket 4 in the front-rear direction, and the output end of its motor shaft extends out of the front wall of the mounting bracket 4 and is connected to the fan blade 3. The clamping plate 41 is not limited to an arc-shaped plate.

[0045] like Figure 3 and Figure 4 As shown, in some embodiments, the mounting bracket 4 includes a first mounting plate 43 and a second mounting plate 44 connected together. The first mounting plate 43 is equipped with a first drive 2 and has a weight reduction hole 431 and a slide groove 432. The clamping plate 41 is slidably connected to the slide groove 432 through a guide block 411. The second mounting plate 44 is connected to the rotating rod 51.

[0046] The opening of the weight reduction hole 431 can reduce the overall weight of the mounting bracket 4 to a certain extent, while the cooperation of the slide groove 432 and the guide block 411 can guide the position adjustment of the clamping plate 41 on the first mounting plate 43 to ensure the smooth sliding operation of the clamping plate 41 on the first mounting plate 43.

[0047] Specifically, the number and location of the weight-reducing holes 431 are designed as needed while ensuring the structural strength of the mounting bracket 4. The first mounting plate 43 and the second mounting plate 44 can be vertically connected, wherein the first mounting plate 43 can be along... Figure 2 Extending vertically, the second mounting plate 44 can be along... Figure 2 The groove 432 extends in the front-to-back direction. The groove 432 can be formed along the width direction of the first mounting plate 43, wherein the width direction of the first mounting plate 43 can be... Figure 2 In the left-right direction, the thickness direction of the first mounting plate 43 can be... Figure 2 The front and back directions in the middle.

[0048] In addition, the connecting rod 52 extends radially along the rotating rod 51 and is arranged at an angle to the first mounting plate 43. The clamping plate 41 can contact the rear wall surface of the first mounting plate 43. Therefore, the first mounting plate 43, the connecting rod 52 and the second mounting plate 44 form a triangular structure, which is more stable and further improves the support reliability of the clamping structure formed between the clamping plate 41, the connecting rod 52 and the rotating rod 51 for the first drive 2.

[0049] like Figure 3 As shown, in some embodiments, the second mounting plate 44 has a through hole and a slot connected together, the rotating rod 51 is slidably engaged with the through hole, and a locking block is provided on the peripheral wall of the rotating rod 51, which is slidably engaged in the slot.

[0050] The bayonet and the locking block cooperate to restrict the rotational freedom of the rotating rod 51 on the second mounting plate 44, so that the rotating rod 51 can only slide on the second mounting plate 44. When the second drive 5 drives the rotating rod 51 to rotate, the rotating rod 51 can pull the second mounting plate 44 to rotate accordingly.

[0051] Specifically, the through hole and the bayonet can both extend in the axial direction of the rotating rod 51, and the through hole and the bayonet are arranged radially along the rotating rod 51. The locking block can be integrally formed on the peripheral wall of the rotating rod 51.

[0052] like Figure 2 and Figure 3 As shown, in order to avoid damage to the first drive 2 caused by the impact force of the gas being drawn into the dust removal chamber by the fan blade 3 through the negative pressure, in some embodiments, the coal mine operation ventilation and dust removal device also includes a protective cover 6 connected to the mounting frame 4. The protective cover 6 is located between the mounting frame 4 and the fan blade 3 and is spaced apart from the inner wall of the housing 1. The protective cover 6 is used to shield the first drive 2.

[0053] Specifically, the cross-section of the protective cover 6 can be circular, in which case its diameter is greater than the diameter of the first drive 2, the distance between the inner top wall and the inner bottom surface of the housing 1 is the height of the dust removal chamber, the distance between the left inner wall surface and the right inner wall surface of the housing 1 is the width of the dust removal chamber, and the diameter of the protective cover 6 is less than at least one of the height and width of the dust removal chamber.

[0054] like Figure 2 As shown, in some embodiments, the ventilation and dust removal device for coal mine operations also includes a filter screen 7, which is provided at least one of the air inlet and air outlet. The filter screen 7 is installed in the dust removal chamber to filter harmful gases and dust entering the dust removal chamber.

[0055] Specifically, filter screen 7 can be a fibrous activated carbon filter screen to decompose and purify toxic and harmful substances in the gas. Filter screen 7 can be installed near the air inlet, near the air outlet, or two filters 7 can be installed near the air inlet and near the air outlet respectively. When filters 7 are installed at both the air inlet and outlet, a two-stage filtration structure can be formed to improve the filtration performance of the dust removal device and ensure the filtration effect. Filter screen 7 can be installed along... Figure 2 The front-to-back direction of the filter 7 is located between the air inlet and the fan blade 3, or the filter 7 can be along... Figure 2 The front-to-back direction is located between the first drive 2 and the air outlet.

[0056] In addition, to reduce costs, the filter screen 7 near the air inlet can be a particulate filter to filter particulate matter in the gas, while the filter screen 7 near the air outlet can be a fibrous activated carbon filter. The specific design will be based on actual production and will not be elaborated here.

[0057] like Figure 1 and Figure 2 As shown, in order to further reduce the difficulty of disassembling and assembling the filter screen 7 and the housing 1, in some embodiments, the housing 1 also has an installation port 11 that communicates with the dust removal chamber. At least part of the filter screen 7 is slidably connected to the installation port 11 or the inner wall surface of the housing 1, so as to facilitate the filter screen 7 to be installed into or removed from the inner cavity of the housing 1 through the installation port 11. The operation is simple and the practicality is strong.

[0058] Specifically, a mounting hole can be provided through the top or bottom wall of the housing 1. In this case, corresponding slide rails are provided on the left and right inner wall surfaces of the housing 1. When the filter screen 7 is installed into the dust removal chamber through the mounting hole, its end in the left-right direction slides and fits in the slide rail, thereby realizing the installation of the filter screen 7 in the housing 1. Alternatively, a mounting hole can be provided through the left or right wall of the housing 1. In this case, corresponding slide rails are provided on the inner top and inner bottom walls of the housing 1. Similarly, when the filter screen 7 is installed into the dust removal chamber through the mounting hole, its end in the up-down direction slides and fits in the slide rail (not shown in the figure).

[0059] like Figure 1 As shown, in some embodiments, the coal mine ventilation and dust removal device also includes a protective net 8 and an exhaust hood 9. The protective net 8 is installed at the air inlet to prevent larger objects in the roadway from being sucked into the dust removal chamber when the fan blades 3 generate negative pressure, thus avoiding damage to the fan blades 3 and the first drive 2, and ensuring the normal operation performance of the dust removal device. The exhaust hood 9 is installed at the air outlet, which similarly creates a good working environment for the dust removal chamber, ensuring the smooth filtration and treatment of gas in the roadway by the dust removal device.

[0060] Specifically, the protective net 8 is installed at the front end of the air inlet, and the air outlet cover 9 is installed at the rear end of the air outlet.

[0061] like Figures 1 to 4 As shown, the working process of the coal mine ventilation and dust removal device is explained in conjunction with its specific structure. Specifically, the coal mine ventilation and dust removal device is placed in a suitable position in the roadway. The first drive 2 and the second drive 5 are started. The first drive 2 rotates the fan blades 3, creating a negative pressure in the dust removal chamber and generating suction to draw harmful gases and dust in the roadway from the air inlet. The gases and dust are then filtered and intercepted by the protective net 8, filtered by the filter net 7, and treated in the dust removal chamber (including dust suppression by dust suppression nozzles). Finally, they are discharged from the air outlet, thereby achieving the filtration and treatment of harmful gases and dust in the roadway. During this process, the second drive 5 simultaneously drives the rotating rod 51 to rotate, causing the rotating rod 51 to pull the mounting frame 4 to rotate accordingly, thereby changing the angle of the fan blades 3 relative to the air inlet and widening the blowing coverage area of ​​the fan blades 3.

[0062] In addition, when the first drive 2 needs to be replaced or repaired, the exhaust cover 9 can be removed first, and then the locking member 42 can be screwed on to disengage the locking member 42 from the sleeve on the clamping plate 41. The clamping plate 41 can then be moved away from the first drive 2 to release the clamping structure from the first drive 2. Finally, the first drive 2 can be removed from the first mounting plate 43. Similarly, when assembling the first drive 2, the first drive 2 is first positioned on the first mounting plate 43, and then the locking member 42 is screwed on in the opposite direction to insert the locking member 42 into the sleeve and push the clamping plate 41 to slide on the first mounting plate 43 until the clamping plate 41 presses against the first drive 2, thus completing the assembly of the first drive 2 on the first mounting plate 43.

[0063] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0065] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0066] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0067] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0068] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A ventilation and dust removal device for coal mine operations, characterized in that, include: The housing is provided with a dust removal chamber and has an air inlet and an air outlet communicating with the dust removal chamber; A first drive, a fan blade, and a mounting bracket are provided. The first drive is located in the dust removal chamber and is drivenly connected to the fan blade. The fan blade is closer to the air inlet than the air outlet. The mounting bracket is connected to the first drive and can be pivotally mounted in the dust removal chamber along with the fan blade. as well as The second drive is mounted on the housing and is connected to the mounting bracket in a driving manner; The coal mine operation ventilation and dust removal device also includes a clamping plate and a locking component. The clamping plate is slidably connected to the mounting frame and has a locking position that presses against the first drive and an unlocking position that is spaced apart from the first drive. The locking component can lock the clamping plate and the mounting frame when the clamping plate is in the locking position. The second drive is connected to the mounting frame via a rotating rod, which is pivotally mounted inside the dust removal chamber; The coal mine operation ventilation and dust removal device also includes a connecting rod connected to the rotating rod. One of the connecting rod and the clamping plate is provided with a threaded hole, and the other is provided with a mounting hole. The threaded hole and the mounting hole are arranged coaxially. The locking member is threadedly engaged with the threaded hole and slidably engaged with the mounting hole. The first drive is a motor, there are two clamping plates which are respectively disposed on the outside of the motor along the axial direction of the rotating rod, the clamping plates have an arc-shaped surface that presses against the peripheral wall of the motor in the locking position, and there are two connecting rods which correspond one to one of the clamping plates; The mounting frame includes a first mounting plate and a second mounting plate connected together. The first mounting plate is equipped with the first drive and has a weight reduction hole and a sliding groove. The clamping plate is slidably connected to the sliding groove through a guide block. The second mounting plate is connected to the rotating rod. The second mounting plate has a through hole and a bayonet that are connected. The rotating rod is slidably engaged with the through hole. A locking block is provided on the peripheral wall of the rotating rod, and the locking block is slidably engaged in the bayonet.

2. The coal mine ventilation and dust removal device according to claim 1, characterized in that, The coal mine operation ventilation and dust removal device also includes a protective cover connected to the mounting frame. The protective cover is located between the mounting frame and the fan blade and is spaced apart from the inner wall of the housing. The protective cover is used to shield the first drive.

3. The coal mine ventilation and dust removal device according to claim 1, characterized in that, The coal mine operation ventilation and dust removal device also includes a filter screen, which is provided near at least one of the air inlet and the air outlet, and is installed in the dust removal chamber.

4. The coal mine ventilation and dust removal device according to claim 3, characterized in that, The housing also has an installation port communicating with the dust removal chamber, and at least a portion of the filter screen is slidably connected to the installation port or the inner wall surface of the housing.

5. The coal mine ventilation and dust removal device according to claim 1, characterized in that, The coal mine operation ventilation and dust removal device also includes a protective net and an air outlet hood. The protective net is installed in conjunction with the air inlet, and the air outlet hood is installed in conjunction with the air outlet.

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