A ring-shaped rotating air supply device for coal storage bin

Abstract

The present invention relates to an annular rotating air supply device for a coal storage warehouse, comprising an air duct rotating ring and an air duct fixed ring; the air duct rotating ring is fixedly connected to the central rotating platform of the warehouse through a second support frame, the air duct fixed ring is fixedly connected to the warehouse top trestle of the warehouse through a first support frame, the air duct rotating ring and the air duct fixed ring are coaxially arranged with the central axis of rotation of the warehouse; the air duct rotating ring is sealed with the air duct fixed ring through a sealing assembly, and an annular air duct is formed between the air duct rotating ring and the air duct fixed ring; an air inlet pipe connected to the annular air duct is provided on the air duct fixed ring, the end of the air inlet pipe is connected to an air supply fan located outside the warehouse, and an air outlet pipe connected to the annular air duct is provided on the air duct rotating ring. Compared with the prior art, the present invention has good sealing performance, high air supply efficiency, small space occupation, does not affect the original structure and operation process of the warehouse, and meets the air supply demand at the rotating trestle.

Description

Technical Field

[0001] The invention relates to a coal storage technology, in particular to an annular rotating air supply device for a coal storage bin. Background Art

[0002] Euro warehouse coal is the latest environmentally friendly coal storage method in China. Since the types of coal used in Euro warehouse coal storage abroad are quite different from those in China, the moisture content of foreign coal is lower, and the water vapor volatilized during coal storage is smaller. In the actual coal storage process, the water vapor concentration in the Euro warehouse is lower, which will not affect the environment in the Euro warehouse. However, the coal used in China is mainly lignite, which has a high proportion of powdered coal particles, high volatile matter and moisture, and is prone to spontaneous combustion. Therefore, a higher water vapor concentration will be generated in the Euro warehouse where coal is stored. When the higher concentration of water vapor encounters the equipment in the warehouse and the metal structure of the warehouse, it will condense into water droplets, and then combine with the gas released by various coals in the warehouse to produce various acidic corrosive substances. When attached to the surface of the metal parts in the Euro warehouse, these metal equipment will be corroded and damaged, which will bring extremely adverse effects. In addition, at present, domestic power generation enterprises generally use coal with high volatile content and large volatile volume. When storing coal, coal emits more methane and carbon monoxide. These combustible gases are very likely to cause various fires in the space gathered in the warehouse or endanger the personal safety of maintenance and operation personnel entering the warehouse. In order to prevent spontaneous combustion of coal, domestic power generation enterprises generally use nitrogen to prevent the oxidation reaction of coal, and release a large amount of nitrogen from the bottom of the warehouse so that the nitrogen can fill the gaps between coal particles, thereby isolating the oxygen around the coal and avoiding or reducing the possibility of oxidation reaction of coal. However, this method inevitably causes some nitrogen to penetrate from the coal piled in the warehouse and spread to the space without coal in the warehouse, which will also reduce the oxygen content in the space without coal in the warehouse. When personnel need to enter the warehouse for equipment maintenance or operation, they will be in danger of suffocation due to the low oxygen concentration. In addition to conventional positive pressure respirators, other types of mouth masks cannot effectively ensure the normal breathing of personnel. However, after wearing positive pressure respirators, the movement of operators is inconvenient and cannot meet normal operation requirements.

[0003] Although the Euro warehouse is equipped with an exhaust fan on the top of the warehouse, the actual exhaust effect is not good, mainly because the various gases and water vapor generated are mainly concentrated near the piled coal, that is, near the upper surface of the coal pile in the warehouse. The exhaust fan on the top of the warehouse mainly exhausts the gas in the area near the exhaust fan, but the Euro warehouse is not a sealed container. There are always various gaps in many structural joints of the Euro warehouse, such as between the roof and the cylinder, which allow gas to enter the warehouse and then flow to the exhaust fan and be discharged by the exhaust fan. This is because the flow of gas always occurs from the place with the least resistance, and the gas near the coal pile in the warehouse flows relatively slowly, especially when the height of the coal pile in the Euro warehouse is low, that is, when the amount of stored coal is small, and the distance between the surface of the coal pile and the exhaust fan is far, the wind on the top of the warehouse is The exhaust fan has a poor ability to absorb the gas near the surface of the coal pile, so it takes at least 10 hours to replace the gas in the warehouse. In addition, if the exhaust volume of the exhaust fan is greater than the amount of air entering from the gap, it will only form a negative pressure in the warehouse, causing unnecessary load on the warehouse roof, but it cannot effectively make the gas near the coal pile flow to a position close to the warehouse roof. If it cannot effectively exchange air, it will seriously restrict the timeliness of personnel entering the warehouse, or bring hidden dangers to the safety of coal storage in the warehouse. This situation seriously affects the normal coal storage production operation of the warehouse. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a ring-shaped rotating air supply device for a coal storage warehouse, which has good sealing performance, high air supply efficiency, small space occupation, does not affect the original structure and operation process of the warehouse, and meets the air supply demand at the revolving trestle.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A ring-shaped rotating air supply device for a coal storage bin comprises an air duct rotating ring and an air duct fixing ring;

[0007] The air duct rotating ring is fixedly connected to the central rotating platform of the Euro warehouse through the second supporting frame, the air duct fixing ring is fixedly connected to the warehouse top trestle of the Euro warehouse through the first supporting frame, and the air duct rotating ring and the air duct fixing ring are coaxially arranged with the rotating central axis of the rotating trestle of the Euro warehouse;

[0008] The air duct rotating ring is sealedly connected to the air duct fixed ring through a sealing assembly, and a ring-shaped air duct is formed between the air duct rotating ring and the air duct fixed ring;

[0009] The air duct fixed ring is provided with an air inlet pipe connected to the annular air duct, the end of the air inlet pipe is connected to an air supply fan located outside the Euro warehouse, and the air duct rotating ring is provided with an air outlet pipe connected to the annular air duct;

[0010] When the air supply device is in operation, the position of the air duct fixing ring is fixed, and the air duct rotating ring rotates synchronously with the central rotating platform. The fresh and dry air outside the Euro warehouse passes through the air supply fan, the air inlet pipe, the annular air duct and the air outlet pipe in sequence, and is discharged to the vicinity of the central rotating platform of the Euro warehouse, quickly blowing away the moist, toxic and harmful gases near the rotating trestle, meeting the anti-corrosion requirements of the metal parts in the Euro warehouse, and also meeting the air supply needs at the rotating trestle, ensuring the personal safety of the workers here.

[0011] Furthermore, the air duct fixing ring comprises a cylinder and a third annular plate, two fourth annular plates are symmetrically arranged at both ends of the cylinder, an eighth annular plate is vertically arranged at the edge of the fourth annular plate, and the third annular plate is fixedly connected to the eighth annular plate;

[0012] The air duct rotating ring comprises an annular groove, the opening direction of the annular groove is horizontally toward the central axis direction of the annular groove, and the side wall of the annular groove is connected to the third annular plate through a sealing component.

[0013] Furthermore, a second annular plate is vertically provided on the side wall of the annular groove, and a first annular plate parallel to the second annular plate is provided on the second annular plate;

[0014] The sealing assembly includes a sealing belt and an annular hook plate. The sealing belt is made of wear-resistant, flexible, elastically stretchable non-metallic material. One end of the sealing belt is fixed to the first annular plate through a hoop, and the other end is tightly attached to the annular hook plate. The annular hook plate is fixedly connected to the third annular plate.

[0015] Furthermore, a fifth annular plate is provided on the annular hook plate along the horizontal direction, a sixth annular plate is provided on the third annular plate along the horizontal direction, and the fifth annular plate is connected to the sixth annular plate by a third bolt along the vertical direction;

[0016] The annular hook plate is provided with a waist-shaped hole along the vertical direction, and the third annular plate is connected to the annular hook plate by a fourth bolt passing through the waist-shaped hole. The height of the annular hook plate is adjusted by adjusting the position of the fourth bolt passing through the waist-shaped hole. The third bolt and the fourth bolt jointly fix the position of the annular hook plate, and the structure is stable.

[0017] Furthermore, a slope is provided on the annular hook plate, and the sealing belt is in close contact with the slope. When the annular hook plate moves upward, the larger the contact area between the end of the extended section of the sealing belt and the slope, the larger the diameter of the end of the extended section, thereby being stretched, so that the end of the extended section fits more closely with the slope, thereby ensuring the sealing of the annular air duct.

[0018] Furthermore, the diameter of the hoop is larger than the diameter of the outer wall of the first annular plate, a flange is provided on the first annular plate, the sealing belt covers the flange, the portion of the sealing belt covering the flange is stretched, so that the sealing belt can be tightly clamped on the flange, and at the same time, the end of the extended section of the sealing belt is also stretched by the stretching effect of the flange on the sealing belt, and the stretching amount is less than the stretching amount of the sealing belt at the flange, so that the end of the extended section of the sealing belt can always maintain a circular shape similar to the annular flange.

[0019] Furthermore, an adjusting screw is provided between the second annular plate and the first annular plate, and a nut is provided on the adjusting screw. The spacing between the first annular plate and the second annular plate is adjusted by rotating the nut on the adjusting screw. A reinforcing rib plate is provided between the annular groove and the second annular plate to ensure that the second annular plate is always perpendicular to the side wall of the annular groove. Therefore, the position of the first annular plate can be adjusted by the adjusting screw so that the circular tolerance of the annular flange is within a set range. The operation is flexible, the tension of the sealing belt can be flexibly adjusted, and the sealing belt can be easily disassembled and assembled.

[0020] Furthermore, an O-ring is provided between the annular hook plate and the third annular plate, so that the gap between the contact surfaces of the third annular plate and the annular hook plate is closed, and the sealing performance is good.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) When the air supply device of the present invention is in operation, the position of the air duct fixing ring is fixed, and the air duct rotating ring rotates synchronously with the central rotating platform. The fresh and dry air outside the Euro warehouse passes through the air supply fan, the air inlet pipe, the annular air duct and the air outlet pipe in sequence, and is discharged to the vicinity of the central rotating platform of the Euro warehouse, and the moist, toxic and harmful gases near the central rotating platform are quickly blown away, meeting the anti-corrosion requirements of the metal parts in the Euro warehouse, and at the same time, it can also meet the air supply requirements at the rotating trestle, ensuring the personal safety of the workers there. The air outlet pipe rotates synchronously, so that the air discharged from the air outlet pipe can be evenly diffused, so that the moist, toxic and harmful gases near the central rotating platform are fully dispersed, meeting the anti-corrosion requirements of the metal parts in the Euro warehouse, and at the same time, it can also meet the air supply requirements at the rotating trestle, ensuring the personal safety of the workers there;

[0023] (2) The air supply device of the present invention is annular as a whole and is coaxially arranged with the rotation center axis of the revolving trestle, which can fully utilize and match the characteristics of the equipment structure in the Euro warehouse, does not need to change the original structure of the Euro warehouse, and will not interfere with the revolving trestle structure, will not affect the operation of the Euro warehouse, and has little impact on the maintenance of the Euro warehouse. At the same time, the air supply device encounters little resistance when rotating, and has high air supply efficiency;

[0024] (3) The annular hook plate of the present invention is provided with a waist-shaped hole along the vertical direction, and the third annular plate is connected to the annular hook plate by a fourth bolt passing through the waist-shaped hole. The height of the annular hook plate can be adjusted by adjusting the position of the fourth bolt passing through the waist-shaped hole. The annular hook plate is provided with an inclined surface, and the sealing belt is in close contact with the inclined surface. When the annular hook plate moves upward, the larger the contact area between the end of the extended section of the sealing belt and the inclined surface, the larger the diameter of the end of the extended section, and thus the extended section is stretched, so that the end of the extended section is more closely fitted with the inclined surface, thereby ensuring the sealing of the annular air duct. Therefore, the height of the annular hook plate can be adjusted to improve the close contact between the sealing belt and the inclined surface, and the operation is flexible. At the same time, when the air duct rotating ring rotates, the sealing belt rotates synchronously, and its position may move downward. At this time, the contact area between the end of the extended section of the sealing belt and the inclined surface also becomes larger, and the sealing performance is not affected. The sealing and stability of the annular air duct are good;

[0025] (4) The air pressure of the air transported in the annular air duct of the present invention is greater than the air pressure outside the annular air duct. The annular air duct is a positive pressure air duct. The sealing belt can be more closely fitted on the inclined surface under the action of air pressure, thereby achieving a sealing effect. As the air pressure in the annular air duct increases, the fit becomes tighter. Since the end of the extended section of the sealing belt has a certain length, the concentricity of the air duct rotating ring, the air duct fixing ring (22) and the sealing belt has a certain deviation, or the roundness of the annular hook plate has a certain deviation, a good sealing effect can still be produced, and the annular air duct has good sealing and stability.

[0026] (5) The annular hook plate of the present invention is provided with a fifth annular plate along the horizontal direction, the third annular plate is provided with a sixth annular plate along the horizontal direction, the fifth annular plate is connected to the sixth annular plate by a third bolt along the vertical direction, the third bolt and the fourth bolt jointly fix the position of the annular hook plate, and the structure is stable;

[0027] (6) The diameter of the hoop of the present invention is larger than the diameter of the outer wall of the first annular plate, the first annular plate is provided with a flange, the sealing belt covers the flange, and the portion of the sealing belt covering the flange is stretched so that the sealing belt can be tightly clamped on the flange;

[0028] (7) In the present invention, an adjusting screw is provided between the second annular plate and the first annular plate, and a nut is provided on the adjusting screw. The spacing between the first annular plate and the second annular plate is adjusted by rotating the nut on the adjusting screw. A reinforcing rib plate is provided between the annular groove and the second annular plate to ensure that the second annular plate is always perpendicular to the side wall of the annular groove. Therefore, the position of the first annular plate can be adjusted by the adjusting screw so that the circular tolerance of the annular flange is within the set range. The operation is flexible, the tension of the sealing belt can be flexibly adjusted, and the sealing belt can be easily disassembled and assembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1This is a schematic diagram of the structure of the existing Euro warehouse;

[0030] Figure 2 It is a structural schematic diagram of the present invention;

[0031] Figure 3 It is a schematic diagram of the assembly of the air duct fixing ring and the sealing component;

[0032] Figure 4 It is a structural schematic diagram of the air duct rotating ring;

[0033] Figure 5 It is a schematic diagram of the structure of the hoop;

[0034] Figure 6 is a cross-sectional view of a sealing component;

[0035] Figure 7 is a schematic diagram of the three-dimensional structure of the sealing component;

[0036] Figure 8 This is a schematic diagram of the installation position of the annular rotating air supply device on the Euro warehouse;

[0037] Fig. 9 It is a structural schematic diagram of the air duct fixing ring;

[0038] Fig.10 This is a schematic diagram of the installation position of the O-ring;

[0039] Description of the numbers in the figure:

[0040] 1. Cylinder, 2. Feeding port, 3. Warehouse top trestle, 4. Rotating trestle, 5. Walking mechanism, 6. Central telescopic drop tube, 7. Lifting wire rope, 8. Spiral frame, 9. Screw machine, 10. Dust cover of guide chute, 11. A-frame, 12. Central hoisting platform, 13. Central rotating platform, 15. Air inlet pipe, 16. Air supply fan, 17. Air outlet pipe, 18. First support frame, 19. Second support frame, 20. First bolt, 21. Air duct rotating ring, 22. Air duct fixing ring, 23. Second bolt, 24. Hoop Sleeve, 25. third bolt, 26. sealing belt, 27. fourth bolt, 28. O-ring, 29. annular hook plate, 30. reinforcing rib plate, 31. waist-shaped hole, 32. adjusting screw, 211. first annular plate, 212. annular groove, 213. second annular plate, 221. third annular plate, 222. end plate, 223. cylinder, 261. end of the extended section, 291. annular hook plate, 292. fourth annular plate, 293. fifth annular plate, 2111. flange, 2211. sixth annular plate. DETAILED DESCRIPTION

[0041] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0042] like Figure 1 The top of the Euro warehouse cylinder 1 is provided with a warehouse top trestle 3, and a belt conveyor is arranged in the warehouse top trestle 3. A revolving trestle 4, a central telescopic drop pipe 6, a spiral frame 8 and an A-frame 11 are arranged in the cylinder 1. The spiral frame 8 and the A-frame 11 are hung on the revolving trestle 4 through a lifting wire rope 7 and a winch. The spiral frame 8 is connected to the A-frame 11. A spiral machine 9 is arranged on the spiral frame 8. The revolving trestle 4 is arranged on the circular track on the inner wall of the cylinder 1 through a walking mechanism 5. The revolving trestle A central hoisting platform 12 is provided at the center of the bridge 4. The central telescopic dropping pipe 6 is coaxial with the cylinder 1 and passes through the central hoisting platform 12. The upper end of the central telescopic dropping pipe 6 is aligned with the feed port 2 on the silo top trestle 3, and the lower end is connected to the screw machine 9 through a guide trough, and a guide trough dust cover 10 is provided on the guide trough. The coal is transported to the feed port 2 by the belt conveyor of the feed port 2, and is transported to the screw machine 9 by the central telescopic dropping pipe 6. The coal falls from the dropping port of the screw machine 9 into the cylinder 1. The screw machine 9 rotates with the rotation of the revolving trestle 4, and at the same time performs lifting and lowering motion through the lifting wire rope 7, so that the coal can be evenly stored in the cylinder 1. The central telescopic drop tube 6 is composed of several sections of circular tubes with different diameters connected concentrically. Steps of different diameters are provided at both ends of each section of the circular tube, so that two adjacent sections of the circular tube are hooked together and can slide relatively along the axial direction of the circular tube. Several sections of the circular tube are connected on an axis, and are expanded or contracted section by section as the distance between the two ends of the central telescopic drop tube 6 is extended or shortened. Therefore, the distance between the two ends of the central telescopic drop tube 6 can change with the distance between the revolving trestle 4 and the spiral frame 8.

[0043] Since various pipes or devices for supplying air fixedly installed outside the warehouse will interfere with the rotating trestle 4 structure rotating inside the Euro warehouse, traditional air supply devices cannot meet this requirement.

[0044] A circular rotating air supply device for a coal storage bin, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 , including an air duct rotating ring 21 and an air duct fixing ring 22;

[0045] The air duct rotating ring 21 is fixedly connected to the central rotating platform 13 through the second support frame 19, and rotates with the rotation of the rotating trestle 4. The air duct fixing ring 22 is fixedly connected to the warehouse top trestle 3 through the first support frame 18, and the position remains fixed. The air duct rotating ring 21 and the air duct fixing ring 22 are coaxially arranged with the central axis of rotation of the Euro warehouse. The central axis of rotation of the Euro warehouse refers to the axis of the cylinder 1, which is the central axis of rotation of the rotating trestle 4, the central rotating platform 13 and the spiral frame 8, and is also the central axis of the central telescopic blanking tube 6.

[0046] The air duct fixing ring 22 comprises a vertically arranged cylinder 223 , two fourth annular plates 222 are symmetrically arranged along the horizontal direction at both ends of the cylinder 223 , and an eighth annular plate 2221 is vertically arranged on the edge of the fourth annular plate 222 .

[0047] The air duct rotating ring 21 includes an annular groove 212, the opening direction of the annular groove 212 is horizontally toward the central axis direction of the annular groove 212, and the two side walls of the annular groove 212 are sealed and connected to the fourth annular plate 222 through sealing components respectively, and a closed annular air duct is formed between the cylinder 223, the fourth annular plate 222 and the annular groove 212.

[0048] An air outlet pipe 17 connected to the annular air duct is horizontally arranged on the air duct rotating ring 21, an air inlet pipe 15 connected to the annular air duct is arranged on the air duct fixing ring 22, an air supply fan 16 is arranged at the end of the air inlet pipe 15, and the air inlet pipe 15 and the air supply fan 16 are fixed on the warehouse top trestle 3 or the warehouse top of the Euro warehouse.

[0049] The air duct fixing ring 22 also includes a third annular plate 221, and the sealing assembly includes a sealing belt 26 and an annular hook plate 29. The sealing belt 26 is made of wear-resistant, flexible, elastically stretchable non-metallic material. A second annular plate 213 is vertically provided on the side wall of the annular groove 212, and a first annular plate 211 parallel to the second annular plate 213 is provided on the second annular plate 213. An inclined surface 291 and a fifth annular plate 292 are provided on the annular hook plate 29. One end of the sealing belt 26 is fixed to the first annular plate 211 through a hoop 24, and the other end, i.e., the end 261 of the extended section is tightly attached to the inclined surface 291. The end of the hoop 24 is connected by a first bolt 20, and the third annular plate 221 is fixedly connected to the eighth annular plate 2221 through a second bolt 23. A sixth annular plate 2211 is vertically provided on the third annular plate 221, and the sixth annular plate 2211 is fixedly connected to the fifth annular plate 292 through a third bolt 25.

[0050] The annular hook plate 29 is provided with a waist-shaped hole 31 in the vertical direction. The third annular plate 221 is fixedly connected to the annular hook plate 29 by a fourth bolt 27 passing through the waist-shaped hole 31. The height of the annular hook plate 29 can be adjusted by adjusting the position of the fourth bolt 27 passing through the waist-shaped hole 31. When the annular hook plate 29 moves upward, the larger the contact area between the extended section end 261 of the sealing belt 26 and the inclined surface 291, the larger the diameter of the extended section end 261 is, so that the extended section end 261 is stretched, so that the extended section end 261 and the inclined surface 291 are more closely fitted, thereby ensuring the sealing of the annular air duct;

[0051] like Fig.10 An O-ring 28 is provided between the third annular plate 221 and the annular hook-shaped plate 29, so that the gap between the contact surfaces of the third annular plate 221 and the annular hook-shaped plate 29 is closed, and the sealing performance is good.

[0052] A flange 2111 is provided at the end of the first annular plate 211. The diameter of the hoop 24 is larger than the diameter of the outer wall of the first annular plate 211. Since the maximum diameter of the flange 2111 is larger than the diameter of the outer wall of the first annular plate 211, the portion of the sealing belt 26 covering the flange 2111 is stretched, so that the sealing belt 26 can be tightly clamped on the flange 2111.

[0053] An adjusting screw 32 is provided between the first annular plate 211 and the second annular plate 213, and a nut is provided on the adjusting screw 32. A reinforcing rib plate 30 is provided between the second annular plate 213 and the side wall of the annular groove 212 to ensure that the second annular plate 213 is always perpendicular to the side wall of the annular groove 212. Since the sealing belt 26 is clamped on the first annular plate 211 through the clamp sleeve 24, the distance between the first annular plate 211 and the second annular plate 213 can be adjusted by rotating the nut on the adjusting screw 32, so as to adjust the position of the first annular plate 211 so that the circular tolerance of the flange 2111 is ≤5mm.

[0054] The air pressure transported in the annular air duct is greater than the air pressure outside the annular air duct. The annular air duct is a positive pressure air duct. The sealing belt 26 can fit more closely on the inclined surface 291 under the action of air pressure to achieve a sealing effect. Since the extended end 261 of the sealing belt 26 has a certain length, the concentricity of the air duct rotating ring 21, the air duct fixing ring 22 and the sealing belt 26 has a certain deviation, or because the roundness of the annular hook plate 29 has a certain deviation, it can still produce a good sealing effect.

[0055] When the revolving trestle 4 rotates, the annular hook plate 29 rotates synchronously, and slippage will occur between the sealing belt 26, which is always stationary, and the inclined surface 291. Under the action of the tightening force generated by the stretched sealing belt 26 and the air pressure in the annular air duct, the extended section end 261 of the sealing belt 26 is always tightly fitted with the inclined surface 291, and the fit becomes tighter as the air pressure in the annular air duct increases.

[0056] Fresh and dry air outside the Euro warehouse enters the annular air duct through the air supply fan 16 and the air inlet pipe 15. The air duct rotating ring 21 rotates with the rotation of the revolving trestle 4. The air in the annular air duct is discharged to the vicinity of the central revolving platform 13 through the air outlet pipe 17, and quickly blows away the moist, toxic and harmful gases near the central revolving platform 13, meeting the anti-corrosion requirements of the metal parts in the Euro warehouse, and also meeting the air supply requirements at the revolving trestle 4, ensuring the personal safety of the workers here.

[0057] This embodiment proposes a circular rotating air supply device for a coal storage silo, which can solve the problems that arise when the silo stores coal with a large volatile content, a high moisture content, and the need to release nitrogen to prevent spontaneous combustion or oxidation, thereby improving the adaptability of the silo to storing various types of coal.

[0058] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A circular rotating air supply device for a coal storage bin, characterized in that: It comprises an air duct rotating ring (21) and an air duct fixing ring (22); The air duct rotating ring (21) is fixedly connected to the central rotating platform (13) of the Euro warehouse through the second support frame (19), and the air duct fixing ring (22) is fixedly connected to the warehouse top trestle (3) of the Euro warehouse through the first support frame (18). The air duct rotating ring (21) and the air duct fixing ring (22) are coaxially arranged with the rotation center axis of the Euro warehouse; The air duct rotating ring (21) is sealedly connected to the air duct fixing ring (22) via a sealing assembly, and a ring-shaped air duct is formed between the air duct rotating ring (21) and the air duct fixing ring (22); The air duct fixing ring (22) is provided with an air inlet pipe (15) connected to the annular air duct, and the end of the air inlet pipe (15) is connected to an air supply fan (16) located outside the Euro warehouse, and the air duct rotating ring (21) is provided with an air outlet pipe (17) connected to the annular air duct; When the air supply device is in operation, the position of the air duct fixing ring (22) is fixed, the air duct rotating ring (21) rotates synchronously with the central rotating platform (13), and the air outside the Euro warehouse passes through the air supply fan (16), the air inlet pipe (15), the annular air duct and the air outlet pipe (17) in sequence, and is discharged to the vicinity of the central rotating platform (13) of the Euro warehouse.

2. The annular rotating air supply device for coal storage bin according to claim 1 is characterized in that: The air duct fixing ring (22) comprises a cylinder (223) and a third annular plate (221); two fourth annular plates (222) are symmetrically arranged at both ends of the cylinder (223); an eighth annular plate (2221) is vertically arranged at the edge of the fourth annular plate (222); and the third annular plate (221) is fixedly connected to the eighth annular plate (2221); The air duct rotating ring (21) comprises an annular groove (212), and the side wall of the annular groove (212) is connected to the third annular plate (221) via a sealing assembly.

3. The annular rotating air supply device for a coal storage bin according to claim 2, characterized in that: A second annular plate (213) is vertically arranged on the side wall of the annular groove (212), and a first annular plate (211) parallel to the second annular plate (213) is arranged on the second annular plate (213); The sealing assembly comprises a sealing belt (26) and an annular hook plate (29), one end of the sealing belt (26) is fixed to the first annular plate (211) through a hoop (24), and the other end is tightly attached to the annular hook plate (29), and the annular hook plate (29) is fixedly connected to the third annular plate (221).

4. The annular rotating air supply device for coal storage bin according to claim 3 is characterized in that: The annular hook-shaped plate (29) is provided with an inclined surface (291), and the sealing belt (26) is in close contact with the inclined surface (291).

5. The annular rotating air supply device for coal storage bin according to claim 3, characterized in that: The first annular plate (211) is provided with a flange (2111), and the sealing belt (26) covers the flange (2111).

6. The annular rotating air supply device for coal storage bin according to claim 3, characterized in that: The annular hook plate (29) is provided with a waist-shaped hole (31) along the vertical direction, and the third annular plate (221) is connected to the annular hook plate (29) by a fourth bolt (27) passing through the waist-shaped hole (31), and the height of the annular hook plate (29) is adjusted by adjusting the position of the fourth bolt (27) passing through the waist-shaped hole (31).

7. The annular rotating air supply device for a coal storage bin according to claim 3, characterized in that: A fifth annular plate (292) is provided on the annular hook plate (29), a sixth annular plate (2211) is provided on the third annular plate (221), and the fifth annular plate (292) is connected to the sixth annular plate (2211) via a third bolt (25).

8. The annular rotating air supply device for a coal storage bin according to claim 3, characterized in that: An adjusting screw (32) is provided between the second annular plate (213) and the first annular plate (211), and a nut is provided on the adjusting screw (32). The distance between the first annular plate (211) and the second annular plate (213) can be adjusted by rotating the nut on the adjusting screw (32).

9. The annular rotating air supply device for a coal storage bin according to claim 8, characterized in that: A reinforcing rib plate (30) is provided between the annular groove (212) and the second annular plate (213).

10. The annular rotating air supply device for a coal storage bin according to claim 3, characterized in that: An O-type sealing ring (28) is provided between the annular hook plate (29) and the third annular plate (221).

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