Multi-roadway low-air-pressure ventilation unit

Abstract

The utility model belongs to the technical field of mine ventilation, and relates to a multi-roadway low-air-pressure ventilation unit. The multi-roadway low-air-pressure ventilation unit comprises an air inlet pipeline and an air outlet pipeline, the air inlet end of the air inlet pipeline and the air outlet end of the air outlet pipeline are both located outside the mine and communicated with outside air, the air outlet end of the air inlet pipeline and the air inlet end of the air outlet pipeline are both located in the roadway, and the air inlet end of the air outlet pipeline is provided with a dust suction pipe. A dust suction hole is formed in the side wall of the dust suction pipe, an ejector pin capable of moving and penetrating through the dust suction hole is movably arranged in the dust suction pipe, an impurity lifting device is further arranged on one side of the air outlet pipeline and can convey impurities in the air outlet pipeline out of the mine, and a transmission device is arranged between the impurity lifting device and the ejector pin. The impurity lifting device can intermittently drive the ejector pins to penetrate through the dust collection holes through the transmission device. The safety of mine operation can be improved.

Description

Technical Field

[0001] The present application belongs to the technical field of mine ventilation and relates to a multi-tunnel low-pressure ventilation unit. Background Art

[0002] Mine ventilation refers to the input of fresh air into the mine to increase the oxygen concentration, dilute and remove toxic and harmful gases and dust in the mine, thereby ensuring the safe production of the mine and the health of workers.

[0003] Patent CN212296457U discloses a multi-lane, low-pressure ventilation unit, comprising an air inlet duct, an air outlet duct, a first ventilation assembly, and a second ventilation assembly. The air inlet duct and the air outlet duct are both installed inside a mine, and the ends of the air inlet duct and the air outlet duct are connected to the outside air and the mine lanes, respectively. The first ventilation assembly is fixedly arranged inside the air inlet duct, and the second ventilation assembly is fixedly arranged inside the air outlet duct. The air inlet directions of the first ventilation assembly and the second ventilation assembly are opposite. The first ventilation assembly and the second ventilation assembly are both multiple negative pressure fans arranged at intervals. The air inlet duct and the air outlet duct are both provided with a pressure reducing assembly. By providing the air outlet duct, the air inlet duct, the first ventilation group, the second ventilation group, and the pressure reducing assembly, the effect of wind speed on the temperature inside the mine is reduced, thereby increasing the ventilation effect between the mine and the outside world and increasing the fresh air inside the mine.

[0004] However, the above ventilation unit still has the following defects: the dust suction port of the ventilation unit is easily blocked, resulting in the wind in the tunnel being unable to be discharged normally through the air outlet duct, the air cannot circulate normally, and it is easy to cause safety hazards in the mine. Utility Model Content

[0005] In order to improve the safety of mine operations, the present application provides a multi-tunnel low-pressure ventilation unit.

[0006] The present application provides a multi-lane low-pressure ventilation unit that adopts the following technical solution:

[0007] A multi-channel low-pressure ventilation unit includes an air inlet duct and an air outlet duct, the air inlet end of the air inlet duct and the air outlet end of the air outlet duct are both located outside the mine and connected to the outside air, the air outlet end of the air inlet duct and the air inlet end of the air outlet duct are both located in the channel, the air inlet end of the air outlet duct is provided with a dust suction pipe, the side wall of the dust suction pipe is provided with a dust suction hole, the dust suction pipe is movably provided with a pin that can move and pass through the dust suction hole, an impurity lifting device is also provided on one side of the air outlet duct, the impurity lifting device can transport impurities in the air outlet duct to the outside of the mine, a transmission device is provided between the impurity lifting device and the pin, and the impurity lifting device can intermittently drive the pin through the dust suction hole through the transmission device.

[0008] By adopting the above technical solution, the air inlet end of the air inlet duct can absorb fresh air outside the mine and transport it to the tunnel inside the mine. The air enters the dust suction pipe through the dust suction hole together with the dust, impurities, etc. in the tunnel, and then flows to the outside of the mine through the air outlet duct. The impurities in the air outlet duct can fall on the impurity lifting device and move to the outside of the mine through the impurity lifting device. The impurity lifting device intermittently drives the thimble to move through the dust suction hole through the transmission device to avoid blockage of the dust suction hole, so that the air in the tunnel can be effectively circulated, thereby improving the safety of mine operations.

[0009] Preferably, an installation cavity is opened in the mine, and the installation cavity is located on one side of the air outlet duct. The impurity lifting device includes a transmission belt arranged in the installation cavity along the vertical direction, and a plurality of lifting buckets are arranged at intervals on the surface of the transmission belt. The air outlet duct is provided with a plurality of dust guard plates spaced apart in the vertical direction, and the side wall of the air outlet duct is provided with a dust outlet corresponding to the dust guard plate, and the dust outlet is connected to the installation cavity.

[0010] By adopting the above technical solution, impurities in the air outlet duct can be blocked by the dust shield, and fall into the lifting bucket through the dust outlet, and are lifted out of the mine by the transmission belt, thereby reducing the amount of impurities in the air discharged outside the mine and avoiding environmental pollution.

[0011] Preferably, the transmission device includes a cylinder coaxially arranged in the dust suction pipe, the mounting end of the cylinder is fixed to one end of the dust suction pipe, and a piston is movably provided at the end of the cylinder away from the mounting end. A driving rod is slidingly provided in the mounting cavity, and at least one lifting bucket can drive the driving rod to slide when it moves. A transmission unit that can drive the piston to move is provided between the driving rod and the piston, and a syringe connected to the inner cavity of the cylinder is provided on the side wall of the cylinder. The ejector pin is located in the syringe and is slidingly sealed with the syringe.

[0012] By adopting the above technical solution, when the lifting bucket moves, the corresponding driving rod is driven to slide, and the driving rod drives the piston to move through the transmission unit, so that the air pressure in the inner cavity of the cylinder increases, pushing the ejector pin out along the syringe and passing through the dust suction hole to avoid blockage of the dust suction hole.

[0013] Preferably, the transmission unit includes a cable, a fixed pulley group, a rack 1, a gear, a rack 2, and a mounting bracket. The fixed pulley group is arranged in a mine. One end of the cable is connected to the drive rod, and the other end of the cable passes around the fixed pulley group and is connected to one end of rack 1. A reset member is provided between rack 1 and the mine. Rack 1 and rack 2 are both slidably arranged in the mine. The gear is rotatably arranged in the mine and meshes with rack 1 and rack 2. Rack 2 is connected to the mounting bracket, and the mounting bracket is connected to the piston.

[0014] By adopting the above technical solution, the driving rod moves, and the rack 1 is driven to move through the cable, and the rack 1 drives the rack 2 to move through the gear, so that the mounting bracket moves, and the mounting bracket pushes the piston to move, so that the air pressure in the cylinder cavity increases, and the ejector pin is pushed to move; when the driving rod moves in the opposite direction, the rack 1 is reset under the action of the reset member, driving the mounting bracket and the piston to reset.

[0015] Preferably, the mine is provided with an installation groove in the vertical direction, the installation groove is located below the transmission belt, the drive rod is slidably arranged in the installation groove, and the lower end of at least one lifting bucket has a top block capable of pushing the drive rod downward.

[0016] By adopting the above technical solution, the lifting bucket moves under the action of the transmission belt. When the ejector block contacts the driving rod, the driving rod can be driven to move. When the ejector block leaves the driving rod, the driving rod is reset under the action of the reset member, intermittently driving the ejector pin to move.

[0017] Preferably, the reset member includes a compression spring, one end of the compression spring is connected to the end of the rack facing away from the cable, and the other end of the compression spring is connected to the mine.

[0018] By adopting the above technical solution, when the top block of the lifting bucket contacts the driving rod, the rack 1 can drive the compression spring to deform; when the top block of the lifting bucket separates from the driving rod, the compression spring can drive the rack 1 to reset.

[0019] Preferably, a mounting cover is detachably provided at the end of the dust suction pipe, and one end of the cylinder is fixed on the mounting cover.

[0020] By adopting the above technical solution, the mounting cover and the dust suction pipe are detachable, which facilitates the installation and subsequent maintenance of the cylinder.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] The impurity lifting device intermittently drives the ejector pin to move through the dust suction hole through the transmission device to avoid blockage of the dust suction hole, so that the air in the tunnel can be effectively circulated, thereby improving the safety of mine operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of an embodiment of the present application.

[0024] Figure 2 It is a cross-sectional view of an embodiment of the present application.

[0025] Figure 3 yes Figure 2 Magnified view of part A.

[0026] Figure 4 yes Figure 2 Enlarged view of part B.

[0027] Explanation of the accompanying reference numerals: 1. Air inlet duct; 11. Branch pipe; 2. Air outlet duct; 21. Dust shield; 22. Dust outlet; 3. Mine; 31. Tunnel; 32. Mounting groove; 4. Dust suction pipe; 41. Dust suction hole; 42. Mounting cover; 5. Impurity lifting device; 51. Mounting cavity; 52. Transmission belt; 53. Lifting bucket; 54. Ejector block; 6. Ejector pin; 61. Limiting plate; 7. Transmission device; 71. Cylinder; 711. Piston; 72. Drive rod; 73. Syringe; 741. Cable; 742. Fixed pulley; 743. Rack 1; 744. Gear; 745. Rack 2; 746. Mounting bracket; 8. Reset part. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-4 This application is described in further detail.

[0029] like Figure 1 、 Figure 2 As shown, the ventilation unit includes an air inlet duct 1 and an air outlet duct 2. The air inlet end of the air inlet duct 1 and the air outlet end of the air outlet duct 2 are both located outside the mine 3 and are connected to the outside air. The air outlet end of the air inlet duct 1 and the air inlet end of the air outlet duct 2 are both located in the tunnel 31. In order to improve the air flow efficiency, fans are provided in the air inlet duct 1 and the air outlet duct 2.

[0030] like Figure 2 、 Figure 3 As shown, the air inlet end of the air outlet duct 2 is provided with a dust suction pipe 4 , and a dust suction hole 41 is opened on the side wall of the dust suction pipe 4 .

[0031] In this embodiment, there are multiple lanes 31 , the dust suction pipes 4 correspond one-to-one to the lanes 31 , and the air outlet end of the air inlet duct 1 has branch pipes 11 that correspond one-to-one to the lanes 31 .

[0032] like Figure 2 、 Figure 3 As shown, an impurity lifting device 5 is further provided on one side of the air outlet duct 2 , and the impurity lifting device 5 can transport impurities in the air outlet duct 2 to outside the mine 3 .

[0033] Specifically, a mounting cavity 51 is vertically provided in the mine 3 and is located on one side of the air outlet duct 2. The impurity lifting device 5 includes a transmission belt 52 vertically provided in the mounting cavity 51. The transmission belt 52 is driven by a motor and has a plurality of lifting buckets 53 spaced apart on its surface. A plurality of dust shields 21 are vertically provided on the air outlet duct 2 and are tilted. A dust outlet 22 corresponding to the dust shield 21 is provided on the sidewall of the air outlet duct 2. The dust outlet 22 is connected to the mounting cavity 51 and is located above the connection between the dust shield 21 and the air outlet duct 2. Impurities in the air outlet duct 2 can be blocked by the dust shield 21 and fall into the lifting bucket 53 through the dust outlet 22, and then lifted out of the mine 3 by the transmission belt 52.

[0034] like Figure 2 、 Figure 3 、 Figure 4 As shown, a pin 6 is movably provided in the dust suction pipe 4 and can move and pass through the dust suction hole 41. A transmission device 7 is provided between the impurity lifting device 5 and the pin 6, and the impurity lifting device 5 can intermittently drive the pin 6 to pass through the dust suction hole 41 through the transmission device 7.

[0035] Specifically, the transmission device 7 includes a cylinder 71 coaxially arranged in the dust suction pipe 4 , and a mounting end of the cylinder 71 is fixed to one end of the dust suction pipe 4 .

[0036] In this embodiment, a removable mounting cap 42 is provided at the end of the dust collection tube 4, and one end of the cylinder 71 is fixed to the mounting cap 42. The mounting cap 42 can be connected to the dust collection tube 4 by screws or threads. The removable mounting cap 42 and dust collection tube 4 facilitate installation and subsequent maintenance of the cylinder 71.

[0037] like Figure 2 、 Figure 3 As shown, a piston 711 is movably provided at one end of the cylinder 71 away from the installation end, and a driving rod 72 is slidably provided in the installation cavity 51. When at least one lifting bucket 53 moves, it can drive the driving rod 72 to slide.

[0038] In this embodiment, a mounting slot 32 is defined vertically in the mine 3 and is located below the transmission belt 52, preferably directly below the transmission belt 52. A drive rod 72 is slidably disposed in the mounting slot 32 and is vertically slidable. A lifting bucket 53 has a top block 54 at its lower end that can push the drive rod 72 downward. The lifting bucket 53 moves under the action of the transmission belt 52, and when the top block 54 contacts the drive rod 72, the drive rod 72 is driven to move.

[0039] like Figure 3 、 Figure 4As shown, a transmission unit capable of driving the piston 711 to move is provided between the drive rod 72 and the piston 711. A syringe 73 communicating with the inner cavity of the cylinder 71 is provided on the side wall of the cylinder 71. The ejector pin 6 is located in the syringe 73 and slides and seals with the syringe 73. The syringe 73 can be threadedly connected to the cylinder 71. The end of the syringe 73 close to the cylinder 71 has a limiting surface that limits the displacement of the ejector pin 6. The end of the ejector pin 6 close to the cylinder 71 has a limiting plate 61 that cooperates with the limiting surface. The diameter of the limiting plate 61 is larger than the diameter of the body of the ejector pin 6. The end of the syringe 73 away from the cylinder 71 has an outlet that is compatible with the body of the ejector pin 6. The diameter of the limiting plate 61 is larger than the diameter of the outlet to prevent the ejector pin 6 from completely sliding out of the syringe 73.

[0040] like Figure 2 、 Figure 3 As shown, in this embodiment, the transmission unit includes a cable 741, a fixed pulley set 742, a rack 1 743, a gear 744, a rack 2 745, and a mounting bracket 746.

[0041] The fixed pulley group 742 is arranged in the mine 3. Preferably, the fixed pulley group 742 includes staggered fixed pulley 1 and fixed pulley 2. One end of the cable 741 is connected to the driving rod 72, and the other end of the cable 741 passes around the fixed pulley group 742 and is connected to one end of the rack 1 743. The fixed pulley 1 and the fixed pulley 2 convert the vertical force of the driving rod 72 into a horizontal pulling force acting on the rack 1 743. The rack 1 743 and the rack 2 745 are both slidably arranged in the mine 3, and the rack 1 743 and the rack 2 745 are parallel. The gear 744 is rotatably arranged in the mine 3 and meshes with the rack 1 743 and the rack 2 745. The rack 2 745 is connected to the mounting bracket 746, and the mounting bracket 746 is connected to the piston 711.

[0042] The second rack 745 cooperates with the gear 744 to convert the pulling force of the first rack 743 into a thrust acting on the mounting bracket 746, thereby pushing the piston 711 to move and increasing the pressure in the inner cavity of the cylinder 71.

[0043] like Figure 3 As shown, a reset member 8 is provided between the rack 743 and the mine 3.

[0044] In this embodiment, reset member 8 comprises a compression spring, one end of which is connected to the end of rack 1 743 facing away from cable 741, and the other end of which is connected to mine shaft 3. When top block 54 of bucket 53 contacts drive rod 72, rack 1 743 drives the compression spring to deform; when top block 54 of bucket 53 separates from drive rod 72, the compression spring drives rack 1 743 to reset.

[0045] As another solution, the reset member 8 can also be designed as a tension spring, one end of which is connected to the end of the rack 743 close to the cable 741, and the other end of the tension spring is connected to the mine 3.

[0046] The working principle of this embodiment is as follows: the air inlet end of the air inlet duct 1 can absorb fresh air outside the mine 3 and transport it to the tunnel 31 in the mine 3, and enter the dust suction pipe 4 through the dust suction hole 41 together with the dust, impurities, etc. in the tunnel 31, and then flow to the outside of the mine 3 through the air outlet duct 2. The impurities in the air outlet duct 2 can fall on the impurity lifting device 5 and move to the outside of the mine 3 through the impurity lifting device 5. The impurity lifting device 5 intermittently drives the ejector 6 to move through the dust suction hole 41 through the transmission device 7 to avoid blockage of the dust suction hole 41, so that the air in the tunnel 31 can be effectively circulated, thereby improving the operation safety of the mine 3.

[0047] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A multi-lane low-pressure ventilation unit, characterized in that: The invention comprises an air inlet duct (1) and an air outlet duct (2), wherein the air inlet end of the air inlet duct (1) and the air outlet end of the air outlet duct (2) are both located outside the mine (3) and communicate with the outside air, and the air outlet end of the air inlet duct (1) and the air inlet end of the air outlet duct (2) are both located in a tunnel (31), and the air inlet end of the air outlet duct (2) is provided with a dust suction pipe (4), and a dust suction hole (41) is provided on the side wall of the dust suction pipe (4), and a thimble (6) capable of moving and passing through the dust suction hole (41) is movably provided in the dust suction pipe (4), and an impurity lifting device (5) is further provided on one side of the air outlet duct (2), and the impurity lifting device (5) can transport impurities in the air outlet duct (2) to the outside of the mine (3), and a transmission device (7) is provided between the impurity lifting device (5) and the thimble (6), and the impurity lifting device (5) can intermittently drive the thimble (6) to pass through the dust suction hole (41) through the transmission device (7).

2. The multi-lane low-pressure ventilation unit according to claim 1, characterized in that: An installation cavity (51) is provided in the mine (3), and the installation cavity (51) is located on one side of the air outlet duct (2). The impurity lifting device (5) includes a transmission belt (52) vertically arranged in the installation cavity (51), and a plurality of lifting buckets (53) are arranged at intervals on the surface of the transmission belt (52). The air outlet duct (2) is vertically arranged at intervals with a plurality of dust shields (21). The side wall of the air outlet duct (2) is provided with a dust outlet (22) corresponding to the dust shield (21), and the dust outlet (22) is communicated with the installation cavity (51).

3. The multi-lane low-pressure ventilation unit according to claim 2, characterized in that: The transmission device (7) includes a cylinder (71) coaxially arranged in the dust suction pipe (4), the mounting end of the cylinder (71) is fixed to one end of the dust suction pipe (4), and a piston (711) is movably arranged at the end of the cylinder (71) away from the mounting end. A driving rod (72) is slidably arranged in the mounting cavity (51), and at least one lifting bucket (53) can drive the driving rod (72) to slide when moving. A transmission unit capable of driving the piston (711) to move is arranged between the driving rod (72) and the piston (711), and a syringe (73) connected to the inner cavity of the cylinder (71) is provided on the side wall of the cylinder (71), and the ejector pin (6) is located in the syringe (73) and is in sliding and sealing cooperation with the syringe (73).

4. The multi-lane low-pressure ventilation unit according to claim 3, characterized in that: The transmission unit includes a cable (741), a fixed pulley group (742), a rack 1 (743), a gear (744), a rack 2 (745), and a mounting bracket (746). The fixed pulley group (742) is arranged in the mine (3). One end of the cable (741) is connected to the driving rod (72). The other end of the cable (741) passes around the fixed pulley group (742) and is connected to one end of the rack 1 (743). A reset member (8) is provided between the rack 1 (743) and the mine (3). The rack 1 (743) and the rack 2 (745) are both slidably arranged in the mine (3). The gear (744) is rotatably arranged in the mine (3) and meshed with the rack 1 (743) and the rack 2 (745). The rack 2 (745) is connected to the mounting bracket (746), and the mounting bracket (746) is connected to the piston (711).

5. The multi-lane low-pressure ventilation unit according to claim 4, characterized in that: The mine (3) is provided with an installation groove (32) in a vertical direction. The installation groove (32) is located below the transmission belt (52). A driving rod (72) is slidably arranged in the installation groove (32). The lower end of at least one lifting bucket (53) has a top block (54) capable of pushing the driving rod (72) downward.

6. The multi-lane low-pressure ventilation unit according to claim 5, characterized in that: The reset member (8) includes a compression spring, one end of which is connected to an end of the rack (743) facing away from the cable (741), and the other end of which is connected to the mine (3).

7. The multi-lane low-pressure ventilation unit according to claim 6, characterized in that: The end of the dust suction pipe (4) is detachably provided with a mounting cover (42), and one end of the cylinder (71) is fixed on the mounting cover (42).

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