Air duct structure for coal mine

Abstract

The invention discloses an air duct structure for a coal mine, and relates to the field of air ducts, the air duct structure comprises a first air duct pipe, a second air duct pipe and an air duct connecting pipe, the first air duct pipe is located above the second air duct pipe, and the air duct connecting pipe is located above the first air duct pipe; butt joint rod structures are arranged on the outer sides between the first air duct pipe and the second air duct pipe and the air duct connecting pipe. According to the air duct structure for the coal mine, rapid installation of the first air duct pipe, the second air duct pipe and the air duct connecting pipe is achieved, and the first air duct pipe, the second air duct pipe and the air duct connecting pipe can be rapidly separated after the butt joint hooks are detached; and gaps are generated, so that the joints among the first air duct pipe, the second air duct pipe and the air duct connecting pipe are opened for ventilation, the exhaust range and function of the air duct are increased, the air duct can exhaust air at different positions of an underground coal mine, and the ventilation effect of the joints among the first air duct pipe, the second air duct pipe and the air duct connecting pipe is improved.

Description

Technical Field

[0001] The present invention relates to the field of air ducts, and in particular to an air duct structure for coal mines. Background Art

[0002] The wind tube structure used in coal mines is a hollow pipe structure that plays the role of air transportation. Generally, the fan generates airflow, and the wind tube serves as an airflow channel to transport the gas to the coal mine, playing the role of ventilation in the coal mine.

[0003] The Chinese patent with publication number "CN119321339A" discloses "a positive pressure duct device specially used for mines, belonging to the field of duct technology, the duct device includes a duct body, a first connecting end fixedly mounted on one end of the duct body, and a second connecting end fixedly mounted on the other end of the duct body". Although it can play the role of "through the coordinated use of the above devices, the common duct splicing method is replaced, so that the two sections of the duct can be conveniently spliced together, and at the same time, the possibility of the duct ventilation effect deteriorating after long-term use is reduced", when the duct structure is used, the duct is installed and fixed in multiple sections. Therefore, each duct needs to be tightened and fixed with screws when in use, and each duct needs to be removed when dismantled, resulting in cumbersome disassembly and assembly, and inconvenient installation, removal, maintenance and use of the duct. At the same time, there is only one air outlet position for the duct, so only the duct at the bottom can be used for air outlet and ventilation, which cannot meet the exhaust and ventilation needs of different positions underground in the coal mine. The single exhaust port also reduces the performance of the coal mine exhaust and ventilation. Summary of the Invention

[0004] The main purpose of the present invention is to provide a wind duct structure for coal mines, which can effectively solve the technical problems raised by the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] The cam is secured to a position 520° and is adapted to engage said first and second air conditioning units, wherein the cam is secured to a position 520° and is adapted to engage said second and third air conditioning units, wherein the cam is secured to a position 520° and is adapted to engage said second and third air conditioning units, wherein the cam is secured to a position 520° and is adapted to engage said second and third air conditioning units, wherein the cam is secured to said second and third air conditioning units, wherein the cam is secured to said second and third air conditioning units,

[0007] As a further solution of the present invention, the docking rod structure includes a connecting shaft, a hook column, a connecting sleeve rod, a telescopic rod, a contraction spring and a docking hook. The connecting shaft is fixedly installed on the outer bottom of the first air duct tube and the air duct connecting tube, the hook column is fixedly installed on the outer top of the first air duct tube and the second air duct tube, the connecting sleeve rod is movably installed on the outer side of the connecting shaft, the telescopic rod is movably installed on the lower end of the connecting sleeve rod, the contraction spring is fixedly installed inside the connecting sleeve rod, and the docking hook is welded to the lower end of the telescopic rod.

[0008] As a further solution of the present invention, the connecting shaft is located above the hook column, the upper end of the connecting sleeve rotates around the connecting shaft, the telescopic rod is inserted into the interior of the connecting sleeve, the upper end of the telescopic rod is fixedly connected to the lower end of the contraction spring, and the docking hook is cooperatively connected with the hook column.

[0009] As a further solution of the present invention, the wave docking ring is located above the rotating outer ring and is closely connected thereto, and the docking protrusion is embedded in the bottom groove of the wave docking ring.

[0010] As a further solution of the present invention, the adjustment plate structure includes a mounting rod, a mounting plate frame and an adjustment sealing plate, multiple mounting rods are welded to the inner bottom of the first air duct tube and the air duct connecting tube, the mounting plate frame is welded to the lower end of the mounting rod, and multiple adjustment sealing plates are movably installed on the inner side of the mounting plate frame.

[0011] As a further solution of the present invention, the adjustment sealing plate is located on the inner side of the wave docking ring, and multiple adjustment sealing plates are arranged in a circle around the center of the mounting plate frame.

[0012] As a further solution of the present invention, the opening and closing push rod is inserted into the mounting plate frame, and the upper end of the opening and closing push rod pushes and adjusts the sealing plate to rotate.

[0013] As a further solution of the present invention, the first air duct tube and the second air duct tube have the same size, and the interiors of the first air duct tube, the second air duct tube and the air duct connecting tube are connected.

[0014] As a further solution of the present invention, one end of the compression spring is fixedly connected to the rotating handle, and the other end of the compression spring presses against the outside of the compression plate, and the compression plate slides back and forth around the rotating handle.

[0015] As a further solution of the present invention, a positioning tooth groove is provided on the outer surface of the fixed inner ring, and the positioning pressure plate passes through the rotating outer ring and is connected to the positioning tooth groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects: when the first air duct tube is connected and installed with the second air duct tube and the air duct connecting tube, the rotation of the connecting sleeve rod enables the docking hook to be matched with the hook column, thereby realizing the rapid installation of the first air duct tube, the second air duct tube and the air duct connecting tube, and then the structure of the docking protrusion being removed and embedded in the bottom groove of the wave docking ring is realized to achieve firm positioning to prevent the connection surface from being displaced and loosened. After the docking hook is removed, the first air duct tube, the second air duct tube and the air duct connecting tube can be quickly separated, which is more convenient for the installation, construction, removal, maintenance and use of the air duct;

[0017] After the wind tube structure is installed, the outer ring is rotated to cause the docking protrusion to deviate and separate from the bottom groove of the wave docking ring, thereby generating a gap so that the connection between the first wind tube pipe, the second wind tube pipe and the wind tube connecting pipe is opened for ventilation, thereby increasing the exhaust range and function of the wind tube, enabling the wind tube to exhaust at different positions underground in the coal mine, making it more convenient for the exhaust ventilation of the coal mine;

[0018] When the docking protrusion and the wavy docking ring are separated, the adjusting sealing plate is laid flat to seal the inside of the mounting plate frame. Therefore, the downward-flowing air will be blown onto the mounting plate frame and the adjusting sealing plate, and then diffuse to the surroundings, and then blown out from the gap between the docking protrusion and the wavy docking ring, thereby increasing the air permeability of the connection between the first air duct pipe, the second air duct pipe and the air duct connecting pipe, further increasing the exhaust range of the air duct, and improving the performance of coal mine exhaust. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a wind tube structure for coal mines according to the present invention;

[0020] Figure 2 This is a structural diagram of the separation of the butt joint protrusion and the corrugated butt joint ring of a wind tube structure for coal mines according to the present invention;

[0021] Figure 3This is an exploded view of a first air duct pipe and a second air duct pipe of a coal mine air duct structure according to the present invention;

[0022] Figure 4 This is a sectional view of a docking rod structure in a wind tube structure for coal mines according to the present invention;

[0023] Figure 5 This is a cross-sectional view of a first air duct pipe in an air duct structure for coal mines according to the present invention;

[0024] Figure 6 This is a cross-sectional view of the second air duct pipe in a coal mine air duct structure according to the present invention;

[0025] Figure 7 This is a cross-sectional view of a first air duct pipe and a second air duct pipe in a coal mine air duct structure of the present invention;

[0026] Figure 8 This is a cross-sectional view of the butt joint protrusion and the wave butt joint ring in a wind duct structure for coal mines after separation according to the present invention.

[0027] 1. First air duct tube; 2. Second air duct tube; 3. Air duct connecting tube; 4. Docking rod structure; 5. Connecting shaft; 6. Hook column; 7. Connecting sleeve rod; 8. Telescopic rod; 9. Contraction spring; 10. Docking hook; 11. Wave docking ring; 12. Adjustment plate structure; 13. Installing connecting rod; 14. Installing plate frame; 15. Adjusting sealing plate; 16. Fixing inner ring; 17. Rotating outer ring; 18. Docking protrusion; 19. Opening and closing top rod; 20. Rotating handle; 21. Pressing plate; 22. Pulling handle; 23. Positioning pressure plate; 24. Pressing spring; 25. Positioning tooth groove. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0029] like Figures 1-8As shown, a wind tube structure for coal mines includes a first wind tube pipe 1, a second wind tube pipe 2 and a wind tube connecting pipe 3. The first wind tube pipe 1 is located above the second wind tube pipe 2, and the wind tube connecting pipe 3 is located above the first wind tube pipe 1. A docking rod structure 4 is provided on the outer sides of the first wind tube pipe 1, the second wind tube pipe 2 and the wind tube connecting pipe 3. The lower ends of the first wind tube pipe 1 and the wind tube connecting pipe 3 are fixedly installed with a wave docking ring 11. The inner bottoms of the first wind tube pipe 1 and the wind tube connecting pipe 3 are fixedly installed with an adjustment plate structure 12. The upper ends of the first wind tube pipe 1 and the second wind tube pipe 2 are fixedly installed. There is a fixed inner ring 16, and the outer movable sleeve of the fixed inner ring 16 is provided with a rotating outer ring 17. The upper end of the rotating outer ring 17 is integrally formed with a docking protrusion 18, and the inner side of the fixed inner ring 16 is welded with an opening and closing push rod 19. Two rotating handles 20 are welded to the outer side of the rotating outer ring 17. The outer side of the rotating handle 20 is sleeved with a clamping plate 21 and a clamping spring 24, and the clamping plate 21 and the clamping spring 24 are arranged front and back. The adjacent ends of the clamping plate 21 and the rotating outer ring 17 are integrally formed with two positioning pressure plates 23, and the opposite ends of the clamping plate 21 and the rotating outer ring 17 are welded with a pulling handle 22.

[0030] In this embodiment, the docking rod structure 4 includes a connecting shaft 5, a hook column 6, a connecting sleeve rod 7, a telescopic rod 8, a contraction spring 9 and a docking hook 10. The connecting shaft 5 is fixedly mounted on the outer bottom of the first air duct tube 1 and the air duct connecting tube 3, the hook column 6 is fixedly mounted on the outer top of the first air duct tube 1 and the second air duct tube 2, the connecting sleeve rod 7 is movably mounted on the outer side of the connecting shaft 5, the telescopic rod 8 is movably mounted on the lower end of the connecting sleeve rod 7, the contraction spring 9 is fixedly mounted on the inside of the connecting sleeve rod 7, the docking hook 10 is welded to the lower end of the telescopic rod 8, the connecting shaft 5 is located above the hook column 6, the upper end of the connecting sleeve rod 7 rotates around the connecting shaft 5, the telescopic rod 8 is inserted into the interior of the connecting sleeve rod 7, the upper end of the telescopic rod 8 is fixedly connected to the lower end of the contraction spring 9, the docking hook 10 is cooperated with the hook column 6 and connected to the hook column 6. After the docking hook 10 is connected to the hook column 6, the first air duct tube 1, the second air duct tube 2 and the air duct connecting tube 3 are docked. The telescopic rod 8 telescopes in the connecting sleeve rod 7, and the contraction spring 9 pulls the telescopic rod 8 to keep moving upward, so that the connecting sleeve rod 7 and the telescopic rod 8 can maintain connections of different lengths.

[0031] In this embodiment, the wave docking ring 11 is located above the rotating outer ring 17 and is tightly connected to it. The docking protrusion 18 is embedded in the bottom groove of the wave docking ring 11. The connection between the docking protrusion 18 and the wave docking ring 11 forms a sealed structure and has a positioning effect. When the docking protrusion 18 rotates, the deviation is used to separate and produce a gap.

[0032] In this embodiment, the adjustment plate structure 12 includes a mounting rod 13, a mounting plate frame 14 and an adjustment sealing plate 15. Multiple mounting rods 13 are welded to the inner bottom of the first air duct tube 1 and the air duct connecting tube 3, and the mounting plate frame 14 is welded to the lower end of the mounting rod 13. Multiple adjustment sealing plates 15 are movably installed on the inner side of the mounting plate frame 14. The adjustment sealing plate 15 is located on the inner side of the wave docking ring 11. Multiple adjustment sealing plates 15 are arranged in a circle around the center of the mounting plate frame 14. When the adjustment sealing plate 15 is erected, it has the effect of opening the mounting plate frame 14. When the adjustment sealing plate 15 is embedded in the mounting plate frame 14, it has the effect of merging and sealing.

[0033] In this embodiment, the opening and closing push rod 19 penetrates into the mounting plate frame 14 , and the upper end of the opening and closing push rod 19 pushes the adjusting sealing plate 15 to rotate and move, and the opening and closing push rod 19 pushes the adjusting sealing plate 15 up to stand upright.

[0034] In this embodiment, the first air duct tube 1 and the second air duct tube 2 have the same size, and the interiors of the first air duct tube 1, the second air duct tube 2 and the air duct connecting tube 3 are connected. The air duct connecting tube 3 can connect the two first air duct tubes 1 to achieve the effect of diversion and transportation.

[0035] In this embodiment, one end of the compression spring 24 is fixedly connected to the rotating handle 20, and the other end of the compression spring 24 presses against the outside of the compression plate 21. The compression plate 21 slides back and forth around the rotating handle 20, and the compression spring 24 pushes the compression plate 21 to always move in one direction.

[0036] In this embodiment, a positioning tooth groove 25 is provided on the outer surface of the fixed inner ring 16, and the positioning pressure plate 23 passes through the rotating outer ring 17 and is connected to the positioning tooth groove 25. After the positioning pressure plate 23 is connected to the positioning tooth groove 25, it plays a role in positioning the rotating outer ring 17.

[0037] It should be noted that the present invention is a wind duct structure for coal mines. When in use, the first wind duct pipe 1 and the second wind duct pipe 2 are the main parts. The first wind duct pipe 1 and the second wind duct pipe 2 are laid underground in the coal mine. The upper end of the first wind duct pipe 1 is connected to the blower through the wind duct connecting pipe 3, so that air is transported from the first wind duct pipe 1 and the second wind duct pipe 2 to the coal mine, thereby playing the role of air transportation and ventilation.

[0038] When the first air duct tube 1 is connected and installed with the second air duct tube 2 and the air duct connecting tube 3, the wave-shaped docking ring 11 at the lower end of the first air duct tube 1 and the second air duct tube 2 is fitted and connected with the rotating outer ring 17 at the upper end, and the docking protrusion 18 is embedded in the bottom groove of the wave-shaped docking ring 11. Then the upper end of the connecting sleeve 7 is rotated around the connecting shaft 5 so that the docking hook 10 is matched and connected with the hook column 6, thereby connecting and installing the first air duct tube 1 and the second air duct tube 2 and the air duct connecting tube 3. By removing the docking protrusion 18 and embedding it in the bottom groove of the wave-shaped docking ring 11, the connection between the first air duct tube 1, the second air duct tube 2 and the air duct connecting tube 3 is firmly positioned to prevent the connection surface from being displaced and loosened. After removing the docking hook 10, the first air duct tube 1, the second air duct tube 2 and the air duct connecting tube 3 can be quickly separated.

[0039] When the handle 22 is released, the compression spring 24 pushes the positioning plate 23 at one end of the compression plate 21 to reconnect with the positioning groove 25 outside the fixed inner ring 16 to position the rotating outer ring 17, thereby enabling the connection between the first air duct 1, the second air duct 2 and the air duct connecting pipe 3 to be opened for ventilation.

[0040] When the docking protrusion 18 is not separated from the wave docking ring 11, the opening and closing push rod 19 penetrates into the mounting plate frame 14 and pushes the adjusting sealing plate 15 to stand upright, and the air can circulate normally through the mounting plate frame 14. When the docking protrusion 18 is separated from the wave docking ring 11, the opening and closing push rod 19 also moves downward and separates from the mounting plate frame 14, so that the adjusting sealing plate 15 is laid flat to seal the mounting plate frame 14. Therefore, the downward-flowing air will blow on the mounting plate frame 14 and the adjusting sealing plate 15, and then diffuse to the surroundings, and then blow out from the gap between the docking protrusion 18 and the wave docking ring 11, thereby increasing the ventilation effect of the connection between the first air duct tube 1, the second air duct tube 2 and the air duct connecting tube 3.

[0041] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A wind duct structure for a coal mine, comprising a first wind duct pipe (1), a second wind duct pipe (2) and a wind duct connecting pipe (3), wherein the first wind duct pipe (1) is located above the second wind duct pipe (2), and the wind duct connecting pipe (3) is located above the first wind duct pipe (1), characterized in that: A docking rod structure (4) is provided on the outer sides of the first air duct (1), the second air duct (2) and the air duct connecting pipe (3); a wave docking ring (11) is fixedly installed at the lower ends of the first air duct (1) and the air duct connecting pipe (3); an adjustment plate structure (12) is fixedly installed at the inner bottoms of the first air duct (1) and the air duct connecting pipe (3); a fixed inner ring (16) is fixedly installed at the upper ends of the first air duct (1) and the second air duct (2); a rotating outer ring (17) is movably sleeved on the outer side of the fixed inner ring (16); and the rotating outer ring (17) is fixedly sleeved on the inner side of the fixed inner ring (16). A docking protrusion (18) is integrally formed at the upper end, an opening and closing push rod (19) is welded to the inner side of the fixed inner ring (16), two rotating handles (20) are welded to the outer side of the rotating outer ring (17), a clamping plate (21) and a clamping spring (24) are sleeved on the outer side of the rotating handle (20), and the clamping plate (21) and the clamping spring (24) are arranged front to back, two positioning pressure plates (23) are integrally formed at the adjacent ends of the clamping plate (21) and the rotating outer ring (17), and a pulling handle (22) is welded to the opposite end of the clamping plate (21) and the rotating outer ring (17).

2. The air duct structure for coal mines according to claim 1, characterized in that: The docking rod structure (4) comprises a connecting shaft (5), a hook column (6), a connecting sleeve rod (7), a telescopic rod (8), a contraction spring (9) and a docking hook (10); the connecting shaft (5) is fixedly mounted on the outer bottom of the first air duct tube (1) and the air duct connecting tube (3); the hook column (6) is fixedly mounted on the outer top of the first air duct tube (1) and the second air duct tube (2); the connecting sleeve rod (7) is movably mounted on the outer side of the connecting shaft (5); the telescopic rod (8) is movably mounted on the lower end of the connecting sleeve rod (7); the contraction spring (9) is fixedly mounted inside the connecting sleeve rod (7); and the docking hook (10) is welded to the lower end of the telescopic rod (8).

3. The air duct structure for coal mines according to claim 2, characterized in that: The connecting shaft (5) is located above the hook column (6), the upper end of the connecting sleeve rod (7) rotates around the connecting shaft (5), the telescopic rod (8) is inserted into the interior of the connecting sleeve rod (7), the upper end of the telescopic rod (8) is fixedly connected to the lower end of the contraction spring (9), and the docking hook (10) is cooperatively connected to the hook column (6).

4. The air duct structure for coal mines according to claim 1, characterized in that: The wave docking ring (11) is located above the rotating outer ring (17) and is closely connected thereto, and the docking protrusion (18) is embedded in the bottom groove of the wave docking ring (11).

5. The air duct structure for coal mines according to claim 1, characterized in that: The adjustment plate structure (12) comprises a mounting connecting rod (13), a mounting plate frame (14) and an adjustment sealing plate (15); a plurality of mounting connecting rods (13) are welded to the inner bottom of the first air duct tube (1) and the air duct connecting tube (3); the mounting plate frame (14) is welded to the lower end of the mounting connecting rod (13); and a plurality of adjustment sealing plates (15) are movably mounted on the inner side of the mounting plate frame (14).

6. The wind tube structure for coal mines according to claim 5, characterized in that: The adjusting sealing plate (15) is located on the inner side of the wave docking ring (11), and a plurality of adjusting sealing plates (15) are arranged in a circular shape around the center of the mounting plate frame (14).

7. The wind tube structure for coal mines according to claim 5, characterized in that: The opening and closing push rod (19) is inserted into the mounting plate frame (14), and the upper end of the opening and closing push rod (19) pushes the regulating sealing plate (15) to rotate.

8. The air duct structure for coal mines according to claim 1, characterized in that: The first air duct tube (1) and the second air duct tube (2) have the same size, and the interiors of the first air duct tube (1), the second air duct tube (2) and the air duct connecting tube (3) are connected.

9. The air duct structure for coal mines according to claim 1, characterized in that: One end of the compression spring (24) is fixedly connected to the rotating handle (20), and the other end of the compression spring (24) is pressed against the outside of the compression plate (21), and the compression plate (21) slides back and forth around the rotating handle (20).

10. The air duct structure for coal mines according to claim 1, characterized in that: The outer surface of the fixed inner ring (16) is provided with a positioning tooth groove (25), and the positioning pressure plate (23) passes through the rotating outer ring (17) and is connected to the positioning tooth groove (25).

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