Coal mine well ventilation equipment with good dust removal effect

Abstract

The invention discloses coal mine well ventilation equipment with a good dust removal effect, relates to the technical field of coal mine ventilation, and solves the problems that when dust is conveyed and screened in a ventilation pipeline, a large amount of dust can adhere to the interior of the ventilation pipeline and the surface of a screening net, air circulation is hindered, and the ventilation efficiency is reduced. The coal mine well ventilation equipment with the good dust removal effect comprises a plurality of ventilation pipelines, an extraction pipeline and a dust cover, the ventilation pipelines are connected through screws, the extraction pipeline is installed on one sides of the ventilation pipelines through screws, and the dust cover is installed on the side face of the extraction pipeline through screws. According to the ventilation pipeline, when the ventilation fan blades are driven to rotate to achieve ventilation operation, dust and other particle impurities in the ventilation pipeline can be treated synchronously, and the problem of dust accumulation in the ventilation pipeline is solved. Meanwhile, the cleaning and maintenance frequency of the ventilation pipeline is reduced, and the service life of the ventilation pipeline is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal mine ventilation, in particular to a coal mine shaft ventilation equipment with good dust removal effect. BACKGROUND

[0002] The mine ventilation equipment plays a crucial role in coal mine production and mining. It not only ensures the air circulation in the coal mine, but also helps to prevent gas accumulation and other potential dangers, thereby ensuring the safety of miners and the normal operation of the mine.

[0003] The existing patent application with the application number CN117927290A discloses a mine automatic ventilation equipment, which includes an exhaust pipe that can be unfolded or folded from one end to the other end. The two ends of the exhaust pipe are fixedly connected with an air suction fan and a butt joint, respectively, and both the air suction fan and the butt joint are correspondingly installed on a bearing mounting rack. The bearing mounting rack is installed on the side wall of the mine passage. The bearing mounting rack is provided with a clamping ring, which is divided into an upper clamping ring and a lower clamping ring. The lower clamping ring is fixed on the bearing mounting rack, and the upper clamping ring is hinged on one side of the lower clamping ring. The air suction fan and the butt joint can be clamped tightly on the bearing mounting rack through the clamping ring. The elastic member on the exhaust pipe, the air suction fan and the butt joint connected at both ends of the exhaust pipe, the tensioner connected above the air suction fan, and the flexible arc-shaped plate connected between the air suction fan and the butt joint can all be unfolded or folded with the exhaust pipe. After the exhaust pipe is folded, it is convenient for the mine workers to carry it to the installation position. After the exhaust pipe is unfolded, the butt joint and the air suction fan at both ends are clamped with the clamping ring on the bearing mounting rack, which is convenient for the mine workers to install and fix the equipment.

[0004] However, the coal mine ventilation equipment has the following defects in specific use: 1. The existing coal mine ventilation equipment mainly relies on the extraction method to extract the gas inside the coal mine to the outside of the coal mine shaft when ventilating the gas inside the coal mine. At the same time, when extracting the gas inside the coal mine, a large amount of dust in the coal mine shaft will be extracted to the outside of the coal mine. Therefore, the extracted dust and other particulate impurities need to be screened. However, when the dust is transported and screened inside the ventilation duct, a large amount of dust will adhere to the inside of the ventilation duct and the surface of the screening net. The dust and other particulate impurities will hinder the air circulation, resulting in a decrease in the ventilation efficiency. At the same time, the ventilation duct with long-term dust accumulation needs more frequent cleaning and maintenance, which not only increases the maintenance cost, but also may shorten the service life of the ventilation duct; 2. In actual use, the extraction force (generally through fan operation) of existing coal mine ventilation equipment weakens as the ventilation duct extends. This necessitates adding multiple blowers inside the duct, increasing the cost of coal mine ventilation systems. Furthermore, multiple blowers increase the weight of the ventilation duct, and vertically oriented ducts are more prone to collapse due to the added weight. Summary of the Invention

[0005] The purpose of this invention is to provide a coal mine ventilation device with good dust removal effect to solve the problems mentioned in the background art.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: This invention provides a coal mine ventilation device with good dust removal effect, including multiple ventilation ducts, an extraction duct, and a dust cover. The multiple ventilation ducts are connected by screws. An extraction duct is installed on one side of each ventilation duct by screws, and a dust cover is installed on the side of the extraction duct by screws. An automatic ventilation and dust prevention mechanism extending into the coal mine is provided inside the extraction duct. The automatic ventilation and dust prevention mechanism includes: A blower extraction assembly is disposed inside the extraction pipe, with its bottom extending into the coal mine shaft. A ventilation fan blade is connected to one side of the blower extraction assembly and is movably disposed inside the dust cover. A connecting rod is connected to the other side of the blower extraction assembly and passes through multiple ventilation pipes. An eccentric blower assembly is installed on the outside of the connecting rod and inside the ventilation duct. A vibration dust removal assembly is installed on one side of the bottom of the eccentric blower assembly and is located at the bottom of the ventilation duct.

[0007] In a preferred embodiment of the present invention, a screen frame is detachably installed inside the ventilation duct by screws. The screen frame is disposed on the side of the eccentric blower assembly and the vibration dust removal assembly, and a screening screen is detachably installed inside the screen frame by screws. The screening screen is movably connected to a connecting rod at its internal center, and a sealing ring is provided between two adjacent ventilation ducts.

[0008] In a preferred embodiment of the present invention, the extraction pipe is configured as a frustum shape, wider at the top and narrower at the bottom, and a dust cover is installed on the side of the extraction pipe with a larger cross-sectional area by screws. The inner wall of the extraction pipe is provided with multiple spiral protrusions.

[0009] As a preferred scheme of the present application, the air blowing and extracting assembly comprises: An air blowing motor is installed inside the coal mine shaft, and a main shaft is connected to an output end of the air blowing motor, the main shaft is rotatably connected to a bottom of the extracting pipeline, a transmission belt is connected to the main shaft through a key-connected synchronous wheel on the outside of the main shaft, and the transmission belt extends to the inside of the extracting pipeline. A rotating shaft is connected to the inside of the transmission belt through a key-connected synchronous wheel on the outside, the rotating shaft is rotatably connected to the inside of the cross, and the cross is installed at the inlet of the extracting pipeline. One side of the rotating shaft is provided with a ventilation fan blade, and the other side of the rotating shaft is connected with a connecting shaft rod.

[0010] As a preferred scheme of the present application, the eccentric air blowing assembly comprises: An intermediate partition plate is installed inside the ventilation pipeline, the intermediate partition plate is arranged on the side of the screen frame, and a connecting shaft rod is arranged at the inside center of the intermediate partition plate. An intermediate gear is installed on the outside of the connecting shaft rod, the intermediate gear is rotatably connected to the side of the intermediate partition plate, and a transmission gear is engaged and connected to the outside of the intermediate gear. The transmission gear is provided with a plurality of transmission gears, the plurality of transmission gears are engaged and connected, the plurality of transmission gears are rotatably connected to the side of the intermediate partition plate, and a driven gear is engaged and connected to the side of one transmission gear at the bottom. The driven gear is rotatably connected to the side of the intermediate partition plate, the inside of the driven gear is hollow, and an intermediate frame is installed in the inside of the hollow driven gear.

[0011] As a preferred scheme of the present application, a plurality of extraction openings are arranged in the inside of the intermediate partition plate, the extraction openings are arranged on the side of the intermediate frame, a support frame is installed in the inside of the extraction openings, and an extraction blade is rotatably connected to one side of the support frame. The bottom of the extraction blade is connected with a side connecting rod, and the bottom of the side connecting rod is connected to the inside center of the intermediate frame.

[0012] As a preferred scheme of the present application, a plurality of guide openings are arranged in the inside of the intermediate partition plate, the guide openings are arranged on the side of the extraction openings. The bottom of the driven gear at the bottom is engaged and connected with a vibration dust removal assembly.

[0013] As a preferred scheme of the present application, the vibration dust removal assembly comprises: Lower stoppers are installed on the inner bottom of the extraction pipeline, two of the lower stoppers are arranged on the side of the screen frame, the other lower stopper is arranged on the side of the intermediate partition plate away from the screen frame, and the lower stoppers are connected with a lower rotating shaft, The lower rotating shaft is movably arranged on the inner bottom of the extraction pipeline and penetrates the intermediate partition plate; A lower gear is installed on the outer side of the lower rotating shaft, the lower gear is rotatably connected to the side of the intermediate partition plate, and the lower gear is meshingly connected to the bottom of the driven gear; A spiral channel is formed in the outer side of the lower rotating shaft, the lower rotating shaft is movably connected with a sliding block through the spiral channel, and the sliding block is slidably connected with the extraction pipeline.

[0014] As a preferred scheme of the present application, a collision rod is installed on one side of the top of the sliding block through a screw, a rubber head is arranged on the outer side of the collision rod, The rubber head abuts against the side of the screening net.

[0015] As a preferred scheme of the present application, a lower channel is arranged on the side of the screening net away from the intermediate partition plate, the lower channel is formed in the inner part of the ventilation pipeline, and inclined channels are communicated on both sides of the bottom of the lower channel, An inclined protrusion is arranged on the inner bottom of the lower channel between the inclined channels, a dust collecting box is communicated on the bottom of the inclined channel, and the dust collecting box is detachably installed on the bottom of the ventilation pipeline through a screw.

[0016] Compared with the prior art, the above one or more technical schemes have the following beneficial effects: 1. In the coal mine ventilation equipment with good dust removal effect, when the ventilation fan blades are driven to operate to generate suction force to transport and ventilate the gas in the coal mine, the rotating force of the ventilation fan blades can also drive the connecting shaft rod and the plurality of extraction blades to rotate and operate, accelerate the ventilation and transport of the gas (extraction and ventilation) in the plurality of ventilation pipelines, reduce the probability of accumulation of the gas in the long ventilation pipeline and normal discharge to the outside of the coal mine, and improve the effect of ventilation of the gas in the coal mine. And the extraction blades extract the gas in the plurality of eccentric parts in the ventilation pipeline, the position of the extracted gas is close to the inner wall of the ventilation pipeline, and the probability of adhesion of dust and other impurities on the inner wall of the ventilation pipeline is reduced when the extracted gas is transported and moved, thereby ensuring the effect of activity and ventilation of the gas in the ventilation pipeline. 2. In the coal mine well ventilation equipment with good dust removal effect, when the extraction blades rotate to extract and ventilate the gas, the force during rotation can also drive the collision rod and the rubber head to continuously and horizontally reciprocate, the surface of the screening net arranged on the side of the collision rod and the rubber head is continuously treated with dust, the problem of dust adhering to the surface of the screening net and affecting the ventilation and impurity screening effect of the screening net is effectively reduced, the gas in the coal mine well can normally flow, and will not be accumulated in the ventilation pipeline, the weight of the ventilation pipeline is reduced due to the accumulation of dust, and the service life of the ventilation equipment after completion is guaranteed; Through the technical solutions in beneficial effect 1 and beneficial effect 2, the frequency of cleaning and maintenance of the ventilation pipeline can be reduced, and the service life of the ventilation pipeline is guaranteed; 3. In the coal mine well ventilation equipment with good dust removal effect, the connecting shaft rods arranged in the plurality of ventilation pipelines can be stably and firmly installed on the left and right sides of the extension threaded rod through the threaded connection pre-fixing and the bolt fixing and fixing mode, and the plurality of connecting shaft rods rotating and operating can be stably assembled and fixed together, and the safety is higher. Meanwhile, the plurality of connecting shaft rods can be detachably fixed, and it is more convenient to place the connecting shaft rod into the pre-excavated construction space, the height of the excavated construction space is reduced, and the cost of the space for constructing the coal mine ventilation equipment is lower in actual excavation. 4. In the coal mine well ventilation equipment with good dust removal effect, through the design of the three-way pipeline, the upper gear and the bevel gear, the rotating force of the connecting shaft rod in the vertical direction can be converted into the rotating force of the connecting shaft rod in the horizontal direction, the ventilation pipeline main road arranged in the vertical direction can be connected with the plurality of extraction pipelines, the ventilation treatment of the plurality of points in the coal mine well is realized, and the ventilation efficiency and speed of the gas in the coal mine well are improved. Meanwhile, the common ventilation main road can reduce the cost of the ventilation equipment during construction and laying. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the application and are incorporated herein by reference. The embodiments illustrated in the drawings are provided to explain the present application and are not meant to limit the present application.

[0018] In addition, the terms "mount", "arrange", "provide with", "connect", "connect with", "sleeve connect" should be understood broadly. For example, it can be fixed connection, detachable connection, or integral structure; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication between two devices, elements or components. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0019] Figure 1is the structural schematic diagram of the whole application; Figure 2 is the structural schematic diagram of the whole application from side view; Figure 3 is the structural schematic diagram of the whole application from partial section view; Figure 4 is the structural schematic diagram of the ventilation duct and the ventilation duct connection section view; Figure 5 is the structural schematic diagram of the ventilation duct and the eccentric blowing assembly connection section view; Figure 6 is the structural schematic diagram of the A area in the whole application; Figure 5 Figure 7 is the structural schematic diagram of the extraction duct and the dust cover connection section view; Figure 8 is the structural schematic diagram of the eccentric blowing assembly and the vibration dust removal assembly connection; Figure 9 is the structural schematic diagram of the ventilation duct from front section view; Figure 10 is the structural schematic diagram of the B area in the whole application; Figure 9 Figure 11 is the structural schematic diagram of the connecting shaft rod through the extension threaded rod connection from rear section view; Figure 12 is the structural schematic diagram of the three-way duct and the connecting shaft rod connection section view; In the figure: 10, ventilation duct; 101, screen frame; 102, screening net; 103, sealing ring; 20, extraction duct; 201, spiral protrusion; 30, dust cover; 40, automatic ventilation dust prevention mechanism; 50, blowing and extraction assembly; 500, ventilation fan blade; 501, blowing motor; 502, main shaft; 503, transmission belt; 504, rotating shaft; 505, cross frame; 60, connecting shaft rod; 601, threaded part; 602, sleeve joint; 603, bolt hole; 604, bolt rod; 605, extension threaded rod; 70, eccentric blowing assembly; 701, intermediate partition; 7010, flow guide hole; 7011, extraction hole; 7012, support frame; 7013, extraction blade; 7014, side connecting rod; 702, intermediate gear; 703, transmission gear; 704, driven gear; 705, intermediate frame; 80, vibration dust removal assembly; 801, lower stop block; 802, lower rotating shaft; 803, lower gear; 804, spiral channel; 805, sliding block; 8051, collision rod; 8052, rubber head; ​​90, lower channel; 901, oblique channel; 902, oblique protrusion; 903, dust box; 100, three-way pipe; 1001, side support; 1002, upper gear; 1003, bevel gear. DETAILED DESCRIPTION

[0020] In order to make the person skilled in the art better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0021] Embodiment one

[0022] Please refer to Figures 1-10 A coal mine well ventilation equipment with good dust removal effect comprises a plurality of ventilation pipes 10, an extraction pipe 20 and a dust cover 30. The plurality of ventilation pipes 10 are connected by screws. The extraction pipe 20 is installed on one side of the ventilation pipe 10 by screws. The dust cover 30 is installed on the side of the extraction pipe 20 by screws. An automatic ventilation and dust prevention mechanism 40 is arranged in the interior of the extraction pipe 20 and extends into the interior of the ventilation pipe 10. The automatic ventilation and dust prevention mechanism 40 extends into the coal mine well. The automatic ventilation and dust prevention mechanism 40 comprises a blast extraction assembly 50. The blast extraction assembly 50 is arranged in the interior of the extraction pipe 20. The bottom of the blast extraction assembly 50 extends into the coal mine well. One side of the blast extraction assembly 50 is connected with a ventilation fan blade 500. The ventilation fan blade 500 is movably arranged on the inner side of the dust cover 30. The other side of the blast extraction assembly 50 is connected with a connecting shaft 60. The connecting shaft 60 penetrates through the plurality of ventilation pipes 10. An eccentric blast assembly 70 is arranged on the outer side of the connecting shaft 60. The eccentric blast assembly 70 is arranged in the interior of the ventilation pipe 10. One side of the bottom of the eccentric blast assembly 70 is provided with a vibration dust removal assembly 80. The vibration dust removal assembly 80 is arranged on the inner bottom of the ventilation pipe 10.

[0023] In the present application, a screen frame 101 is detachably arranged in the interior of the ventilation pipe 10 by screws. The screen frame 101 is arranged on the side of the eccentric blast assembly 70 and the vibration dust removal assembly 80. A screening net 102 is detachably arranged in the interior of the screen frame 101 by screws. The connecting shaft 60 is movably connected with the center of the interior of the screening net 102. A sealing ring 103 is arranged between the adjacent two ventilation pipes 10.

[0024] The working principle is that: when the gas in the coal mine is extracted and evacuated, the gas in the coal mine will drive the ventilation fan blade 500 to rotate through the air extraction assembly 50, the rotation force generated by the ventilation fan blade 500 is used to extract the gas in the coal mine, and the gas in the coal mine is extracted into the inside of the extraction pipeline 20 and the plurality of ventilation pipelines 10, and is transmitted to the outside of the coal mine through the ventilation pipeline 10. The air extraction assembly 50 will also drive the connecting shaft 60 to operate when rotating, drive the eccentric air blowing assembly 70 in the plurality of ventilation pipelines 10 to operate synchronously, extract the gas transmitted in the plurality of ventilation pipelines 10, and ensure that the gas cannot be accumulated in the ventilation pipeline 10 and cannot be discharged to the outside of the coal mine when the gas moves in the long-length ventilation equipment. The effect of extracting and ventilating the gas in the coal mine is improved. The eccentric air blowing assembly 70 can also drive the vibration dust removal assembly 80 to operate when operating, and the dust and particles on the outside of the screening net 102 are cleaned, and the effect of ventilating the gas in the ventilation pipeline 10 is ensured.

[0025] In the present application, the sealing ring 103 can ensure the sealing property of the gas moving in the ventilation pipeline 10, and reduce the problem of gas leakage during ventilation.

[0026] With reference to Figure 7 The extraction pipeline 20 is in the shape of a circular truncated cone with the upper part being wider and the lower part being narrower, and the dust cover 30 is installed on the side with a larger cross-sectional area of the extraction pipeline 20 through screws, and a plurality of spiral protrusions 201 are arranged on the inner wall of the extraction pipeline 20.

[0027] In the coal mine ventilation equipment with good dust removal effect, the structure and shape of the extraction pipeline 20 and the design of the spiral protrusions 201 on the inner side can expand the cross-sectional area of the extracted gas, ensure that the ventilation volume is larger when the extracted gas is moved and ventilated each time, and increase the arc of the inner wall of the extraction pipeline 20, cooperate with the vibration force generated when the equipment operates, and effectively reduce the probability of dust sticking to the inside of the extraction pipeline 20.

[0028] With reference to Figure 4The blower extraction assembly 50 includes a blower motor 501, which is installed inside the coal mine shaft. The output end of the blower motor 501 is connected to a main shaft 502, which is rotatably connected to the bottom of the extraction pipe 20. A transmission belt 503 is connected to the outer side of the main shaft 502 via a keyed synchronous pulley, and the transmission belt 503 extends into the interior of the extraction pipe 20. A rotating shaft 504 is connected to the inner side of the transmission belt 503 via a keyed synchronous pulley, and is rotatably connected to the interior of a cross 505, which is installed at the inlet of the extraction pipe 20. A ventilation fan blade 500 is installed on one side of the rotating shaft 504, and a connecting rod 60 is connected to the other side of the rotating shaft 504.

[0029] In the dust removal efficiency of the coal mine ventilation equipment of the present invention, when ventilating the gas inside the coal mine, the blower motor 501 is started to operate, driving the main shaft 502 connected to the output end of the blower motor 501 to rotate, and causing the transmission belt 503 connected to the outer side of the main shaft 502 through the synchronous pulley to operate. When the transmission belt 503 operates, it drives the rotating shaft 504 connected to the inner side through the synchronous pulley to rotate, thereby driving the ventilation fan blades 500 and the connecting rod 60 connected to the left and right sides of the rotating shaft 504 to rotate, thereby extracting and ventilating the gas inside the coal mine.

[0030] For details, please refer to the following: Figure 5 , Figure 6 and Figure 8 The eccentric blower assembly 70 includes a middle partition 701, which is installed inside the ventilation duct 10 and located on the side of the screen frame 101. A connecting rod 60 is installed through the center of the middle partition 701. An intermediate gear 702 is installed on the outside of the connecting rod 60 and is rotatably connected to the side of the middle partition 701. A transmission gear 703 is meshed on the outside of the intermediate gear 702. Multiple transmission gears 703 are provided and meshed together. All of the multiple transmission gears 703 are rotatably connected to the side of the middle partition 701. A driven gear 704 is meshed on the side of one of the transmission gears 703 located at the bottom. The driven gear 704 is rotatably connected to the side of the middle partition 701. The center of the driven gear 704 is hollow, and an intermediate frame 705 is installed inside the hollow driven gear 704.

[0031] In this design, the interior of the intermediate partition 701 is provided with multiple extraction ports 7011, which are located on the side of the intermediate frame 705. A support frame 7012 is installed inside the extraction port 7011, and an extraction blade 7013 is rotatably connected to one side of the support frame 7012. The bottom of the extraction blade 7013 is connected to a side connecting rod 7014, and the bottom of the side connecting rod 7014 is connected to the center of the interior of the intermediate frame 705. The interior of the intermediate partition 701 is also provided with multiple guide ports 7010, which are located on the side of the extraction ports 7011. The bottom of the driven gear 704 located at the bottom is meshed with a vibration dust removal assembly 80.

[0032] In the above scheme, the extraction blades 7013 installed inside the extraction port 7011 can increase the rate of gas movement inside each ventilation duct 10, while reducing the probability of gas accumulating and sticking inside the ventilation duct 10 due to insufficient extraction force. When the intermediate frame 705 rotates, the side connecting rod 7014 installed on its inner side will rotate, which will drive the extraction blades 7013 connected to the side of the side connecting rod 7014 to rotate.

[0033] In the coal mine ventilation equipment with good dust removal effect of the present invention, when the connecting rod 60 rotates, the intermediate gear 702 installed on its outer side will rotate, driving the multiple transmission gears 703 meshed with the outer side of the intermediate gear 702 to rotate. At this time, through the meshing connection of the three transmission gears 703, it can be ensured that the driven gear 704 meshed with the bottom transmission gear 703 and the intermediate gear 702 rotate in the same direction, and the gas extraction operation is performed synchronously. When the driven gear 704 rotates, the intermediate frame 705 installed on its inner side will rotate, extracting the gas from multiple parts inside the ventilation duct 10 separately, reducing the probability of dust in the gas adhering to the inner wall of the ventilation duct 10.

[0034] For details, please refer to the following: Figure 8The vibration dust removal assembly 80 includes a lower stop block 801, which is installed at the inner bottom of the extraction pipe 20. Two lower stop blocks 801 are provided: one is located on the side of the screen frame 101, and the other is located on the side of the intermediate partition 701 away from the screen frame 101. A lower rotating shaft 802 connects the two lower stop blocks 801. The lower rotating shaft 802 is movably located at the inner bottom of the extraction pipe 20. A through-plate 701 is provided; a lower gear 803 is installed on the outside of the lower rotating shaft 802 and is rotatably connected to the side of the through-plate 701. The lower gear 803 is meshed with the bottom of the driven gear 704; a spiral channel 804 is opened on the outside of the lower rotating shaft 802, and a sliding block 805 is movably connected to the lower rotating shaft 802 through the spiral channel 804. The sliding block 805 is slidably connected to the extraction pipe 20.

[0035] In this design, a collision rod 8051 is installed on one side of the top of the sliding block 805 by screws, and a rubber head 8052 is sleeved on the outside of the collision rod 8051, wherein the rubber head 8052 abuts against the side of the screening screen 102.

[0036] In the coal mine ventilation equipment with good dust removal effect of the present invention, when the driven gear 704 rotates to achieve gas ventilation, its rotation will drive the lower gear 803 meshing with it at the bottom to rotate, and cause the lower rotating shaft 802 connected inside the lower gear 803 to rotate. When the lower rotating shaft 802 rotates, the spiral channel 804 opened on its outer side will rotate, and drive the sliding block 805 connected to the outer side of the spiral channel 804 by ball bearings to move horizontally. The structure formed by the lower rotating shaft 802, the spiral channel 804 and the sliding block 805 is a structure in which a reciprocating screw drives the slider to move. At the same time, when the sliding block 805 moves horizontally, it will also drive the rubber head 8052 connected to its top by the collision rod 8051 to move reciprocally in the horizontal direction, continuously vibrating the screen 102 and reducing the probability of dust and other impurities adhering to the surface of the screen 102.

[0037] For details, please refer to the following: Figure 9 and Figure 10 A lower channel 90 is provided on the side of the screening screen 102 away from the middle partition 701. The lower channel 90 is opened inside the ventilation duct 10. The two sides of the bottom of the lower channel 90 are connected to inclined channels 901. An inclined protrusion 902 is provided between the two inclined channels 901 at the bottom of the lower channel 90. The bottom of the inclined channel 901 is connected to a dust collection box 903. The dust collection box 903 is detachably installed at the bottom of the ventilation duct 10 by screws.

[0038] In the coal mine ventilation equipment of the present invention, which has a good dust removal effect, the dust and other particulate impurities (in the gas) separated by the screening screen 102 will circulate due to their own weight and the wind force generated by the suction force. When the dust and other impurities move to the side of the lower channel 90, they will enter the interior of the lower channel 90 and be transported to the interior of the dust collection box 903 through the inclined channel 901 connected to the bottom of the lower channel 90, so as to achieve centralized collection of dust and reduce the probability of dust and other particulate impurities scattering and sticking inside the ventilation duct 10. At the same time, the design of the inclined protrusion 902 can reduce the probability of wind entering the interior of the dust collection box 903 and causing the dust collected inside the dust collection box 903 to scatter and be re-blown into the ventilation duct 10.

[0039] Example 2

[0040] Based on the above embodiments, it was found during use that the connecting rods 60 used to connect the intermediate gears 702 inside the multiple extraction pipes 20 were difficult to assemble and transport due to the generally deep depth of coal mines. Furthermore, using ordinary threaded connections to connect multiple connecting rods 60 resulted in breakage due to the high-speed rotational force of the connecting rods 60, leading to low safety.

[0041] For specific reference Figure 11 The coupling rod 60 has threaded portions 601 at both ends. The coupling rod 60 is threaded to the inside of the sleeve joint 602 through the threaded portions 601. The bottom of the threaded portion 601 has a pin hole 603 located inside the threaded portion 601. A pin rod 604 is provided through the inside of the pin hole 603. The pin rod 604 is provided through the sleeve joint 602. An extension threaded rod 605 is threadedly connected inside the sleeve joint 602. The extension threaded rod 605 extends to the outside of the sleeve joint 602. Another pin hole 603 is provided inside the extension threaded rod 605. The pin rod 604 that passes through the extension threaded rod 605 is provided inside the pin hole 603.

[0042] In the coal mine ventilation equipment with good dust removal effect of the present invention, the coupling rod 60 can be screwed into the sleeve joint 602 by means of threaded connection, and the coupling rod 60 and the sleeve joint 602 are stably and firmly connected by the one-to-one correspondence of the pin port 603 and the pin rod 604. At the same time, the extension threaded rod 605 can be connected to the sleeve joint 602 by means of threaded connection, pin port 603 and pin rod 604, so as to ensure that the multiple coupling rods 60 that are rotating can be stably assembled and fixed together, and the safety is higher.

[0043] Example 3

[0044] Based on the above embodiments, it was found during use that when mining long coal mine shafts, multiple ventilation ducts need to be installed at various locations inside the mine shaft to ensure rapid gas circulation. However, laying and constructing multiple ventilation ducts 10 requires building and excavating multiple coal mine tunnels, which necessitates a large amount of computational data to balance the stability of the rock, soil, and coal inside the mine shaft, resulting in low safety and high construction difficulty.

[0045] Therefore, when it is necessary to connect the extraction pipe 20 at multiple locations to the main ventilation duct 10, please refer to the following for details. Figure 12 A three-way pipe 100 is installed on the side of the ventilation duct 10 by screws. A side support 1001 is installed at the center of the three-way pipe 100. Two upper gears 1002 are rotatably connected to the top of the side support 1001. The two upper gears 1002 are meshed. One upper gear 1002 is connected to a vertical connecting rod 60. The coaxial end of the other upper gear 1002 is connected to a bevel gear 1003. There are two bevel gears 1003. The two bevel gears 1003 are meshed. Both bevel gears 1003 are rotatably connected to one side of the bottom of the side support 1001. The interior of the other bevel gear 1003 is connected to a horizontal connecting rod 60.

[0046] In the coal mine ventilation equipment of the present invention, which has a good dust removal effect, when ventilating and extracting gas in multiple locations within the coal mine, the vertically arranged connecting rod 60 drives the upper gear 1002 connected to its bottom to rotate, and drives another upper gear 1002 meshing with the side of the upper gear 1002 to rotate. When the other upper gear 1002 rotates, the bevel gear 1003 coaxially connected to its bottom rotates, and drives another bevel gear 1003 meshing with the side of the bevel gear 1003 and the horizontally arranged connecting rod 60 to rotate, thereby driving multiple ventilation components inside the horizontally arranged ventilation duct 10 to operate, reducing the cost of building the ventilation equipment.

[0047] Therefore, any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this invention, based on the technical solution and inventive concept of this invention, should be covered within the protection scope of this invention.

Claims

1. A coal mine ventilation device with good dust removal effect, comprising multiple ventilation ducts (10), extraction ducts (20), and dust covers (30), wherein the multiple ventilation ducts (10) are connected by screws, an extraction duct (20) is installed on one side of each ventilation duct (10) by screws, and a dust cover (30) is installed on the side of each extraction duct (20) by screws, characterized in that: The extraction pipe (20) is equipped with an automatic ventilation and dust prevention mechanism (40) that extends into the ventilation pipe (10). The automatic ventilation and dust prevention mechanism (40) extends into the coal mine shaft. The automatic ventilation and dust prevention mechanism (40) includes: A blower extraction assembly (50) is disposed inside the extraction pipe (20). The bottom of the blower extraction assembly (50) extends into the coal mine shaft. A ventilation fan blade (500) is connected to one side of the blower extraction assembly (50), which is movably disposed inside the dust cover (30). A connecting rod (60) is connected to the other side of the blower extraction assembly (50), which passes through multiple ventilation pipes (10). An eccentric blower assembly (70) is installed on the outside of the connecting rod (60). The eccentric blower assembly (70) is located inside the ventilation duct (10). A vibration dust removal assembly (80) is installed on one side of the bottom of the eccentric blower assembly (70). The vibration dust removal assembly (80) is located at the bottom of the ventilation duct (10).

2. The coal mine ventilation equipment with good dust removal effect according to claim 1, characterized in that: A screen frame (101) is detachably installed inside the ventilation duct (10) by screws. The screen frame (101) is located on the side of the eccentric blower assembly (70) and the vibration dust removal assembly (80). A screening screen (102) is detachably installed inside the screen frame (101) by screws. The screening screen (102) is movably connected to a connecting rod (60) at its internal center, and a sealing ring (103) is provided between two adjacent ventilation ducts (10).

3. The coal mine ventilation equipment with good dust removal effect according to claim 1, characterized in that: The extraction pipe (20) is configured as a frustum shape that is wider at the top and narrower at the bottom. A dust cover (30) is installed on the side of the extraction pipe (20) with a larger cross-sectional area by screws. The inner wall of the extraction pipe (20) is provided with multiple spiral protrusions (201).

4. A coal mine ventilation device with good dust removal effect according to claim 2, characterized in that: The blower extraction assembly (50) includes: A blower motor (501) is installed inside the coal mine shaft. The output end of the blower motor (501) is connected to a main shaft (502). The main shaft (502) is rotatably connected to the bottom of the extraction pipe (20). A transmission belt (503) is connected to the outside of the main shaft (502) via a keyed synchronous pulley. The transmission belt (503) extends into the interior of the extraction pipe (20). A rotating shaft (504) is connected to the inner side of the transmission belt (503) via a synchronous pulley connected by an outer key. The rotating shaft (504) is rotatably connected inside a cross (505), which is installed at the inlet of the extraction pipe (20). A ventilation fan blade (500) is installed on one side of the rotating shaft (504), and a connecting rod (60) is connected to the other side of the rotating shaft (504).

5. A coal mine ventilation device with good dust removal effect according to claim 2, characterized in that: The eccentric blower assembly (70) includes: A middle partition (701) is installed inside the ventilation duct (10). The middle partition (701) is located on the side of the screen frame (101). A connecting rod (60) is provided through the center of the middle partition (701). An intermediate gear (702) is mounted on the outside of the connecting rod (60). The intermediate gear (702) is rotatably connected to the side of the intermediate partition (701). A transmission gear (703) is meshed on the outside of the intermediate gear (702). The transmission gear (703) is provided in multiple ways, and the multiple transmission gears (703) are meshed and connected. The multiple transmission gears (703) are rotatably connected to the side of the middle partition plate (701). The side of the transmission gear (703) located at the bottom is meshed with a driven gear (704). The driven gear (704) is rotatably connected to the side of the intermediate partition plate (701), and the center of the driven gear (704) is hollow, and an intermediate frame (705) is installed inside the hollow driven gear (704).

6. A coal mine ventilation device with good dust removal effect according to claim 5, characterized in that: The middle partition (701) has multiple extraction ports (7011) inside. The extraction ports (7011) are located on the side of the middle frame (705). A support frame (7012) is installed inside the extraction port (7011). An extraction blade (7013) is rotatably connected to one side of the support frame (7012). The bottom of the extraction blade (7013) is connected to a side connecting rod (7014), and the bottom of the side connecting rod (7014) is connected to the center of the interior of the intermediate frame (705).

7. A coal mine ventilation device with good dust removal effect according to claim 6, characterized in that: The interior of the intermediate partition (701) is also provided with a plurality of flow guide ports (7010), which are located on the side of the extraction port (7011). The driven gear (704) located at the bottom is engaged with a vibration dust removal assembly (80).

8. A coal mine ventilation device with good dust removal effect according to claim 6, characterized in that: The vibration dust removal assembly (80) includes: A lower stop block (801) is installed at the inner bottom of the extraction pipe (20). There are two lower stop blocks (801), one of which is located on the side of the screen frame (101), and the other is located on the side of the middle partition (701) away from the screen frame (101). A lower rotating shaft (802) connects the two lower stop blocks (801). The lower rotating shaft (802) is movably disposed at the inner bottom of the extraction pipe (20), and the lower rotating shaft (802) passes through the middle partition plate (701); The lower gear (803) is mounted on the outside of the lower rotating shaft (802), the lower gear (803) is rotatably connected to the side of the intermediate partition (701), and the lower gear (803) is meshed with the bottom of the driven gear (704). A spiral channel (804) is provided on the outside of the lower rotating shaft (802). The lower rotating shaft (802) is movably connected to a sliding block (805) through the spiral channel (804). The sliding block (805) is slidably connected to the extraction pipe (20).

9. A coal mine ventilation device with good dust removal effect according to claim 8, characterized in that: A collision rod (8051) is installed on one side of the top of the sliding block (805) by screws, and a rubber head (8052) is sleeved on the outside of the collision rod (8051). The rubber head (8052) abuts against the side of the screening screen (102).

10. A coal mine ventilation device with good dust removal effect according to claim 9, characterized in that: The screening screen (102) has a lower channel (90) on the side away from the middle partition (701). The lower channel (90) is located inside the ventilation duct (10). The two sides of the bottom of the lower channel (90) are connected to inclined channels (901). Among them, an inclined protrusion (902) located at the bottom of the lower channel (90) is provided between the two inclined channels (901), and a dust collection box (903) is connected to the bottom of the inclined channel (901). The dust collection box (903) is detachably installed at the bottom of the ventilation duct (10) by screws.

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