Coal quality on-line rapid detection device

Abstract

The utility model relates to a coal quality on-line rapid detection device, which comprises a casing, a coal drop pipe, a crusher, a coal flow dynamic scraping plate, a coal flow dynamic transportation shaping mechanism and an optical ray detector, the coal drop pipe is installed at the feed end of the casing, the crusher is installed on the coal drop pipe, two rotating shafts are horizontally and rotatably installed in the coal drop pipe, and the two rotating shafts are connected with the crusher. Uniform stirring rods which are arranged in a staggered manner are mounted on the two rotating shafts, and rollers are mounted at the two ends of the interior of the machine shell; the coal flow forming effect is good, the detection speed is high, the accuracy rate is high compared with a traditional sample test result, a new breakthrough of coal on-line detection is achieved, the traditional sampling, preparing and chemical standard process is subverted, and a large amount of transportation, labor and equipment cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of full-automatic coal sampling and testing of coal mines, power plants, ports and their mineral products, in particular to an online rapid detection device for coal quality. Background Art

[0002] Problems include poor quality reliability of coal quality testing, high cost coefficients in the process, and the inability to guarantee the timeliness of coal quality;

[0003] Traditional coal quality testing involves a complex process of sampling, sample preparation, and testing, with many steps relying on human operators, making management and control extremely difficult and risky.

[0004] Traditional coal quality testing takes about 24 hours in total, making it impossible to guide companies in carrying out precise stacking, blending, combustion adjustment, and other tasks, thus restricting the level of clean and efficient utilization of coal. Utility Model Content

[0005] The problem solved by the utility model is to provide an online rapid detection device for coal quality, which has good coal flow shaping effect, fast detection speed, and high accuracy when compared with traditional sample test results; it achieves a new breakthrough in online coal detection, subverts the standard process of traditional mining, processing and chemical processing, and saves a lot of transportation, labor and equipment costs.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A device for rapid online detection of coal quality comprises a casing, a coal dropping pipe, a crusher, a coal flow dynamic scraper, a coal flow dynamic transport shaping mechanism and an optical ray detector. The feeding end of the casing is provided with a coal dropping pipe, on which a crusher is installed. Two rotating shafts are installed for horizontal rotation inside the coal dropping pipe, and stirring rods are installed in an alternating manner on the two rotating shafts. Rollers are installed at both ends of the casing, and the two rollers are connected by a belt drive. Several rollers are installed inside the casing, and the rollers are in contact with the bottom side of the belt for transmission. The casing is sequentially provided with a coal flow dynamic scraper, a coal flow dynamic transport shaping mechanism and an optical ray detector.

[0008] Preferably, a first reducer is installed on the outside of the coal drop pipe, the input end of the first reducer is connected to the output end of the first motor, the two ends of the rotating shaft are respectively installed with mutually meshing rotating teeth, and one of the rotating shafts is connected to the output end of the first reducer.

[0009] Preferably, a discharging scraping assembly is installed at the tail of the belt, an internal hanging sweeping assembly is installed inside the belt, a bottom scraping assembly is installed on the bottom side of the belt, and the discharging scraping assembly includes a rotating arm rotatably mounted with the casing, and a support arm is installed at one end of the rotating arm, a scraping plate is installed on the support arm, and the other end of the rotating arm is connected to the pull rod through a tension spring.

[0010] Preferably, the internal hanging sweeping assembly includes a mounting arm, the mounting arm is equipped with a V-shaped scraper, and the bottom scraping sweeping assembly includes an elastic arm and a scraper, and the scraper is installed on the elastic arm.

[0011] Preferably, a second reducer is installed on the outside of the housing, and the input end of the second reducer is connected to the output end of the second motor, and the output end of the second reducer is connected to one of the rollers.

[0012] Preferably, the coal flow dynamic transport and shaping mechanism includes a chassis, and several pressure rollers are installed inside the coal flow dynamic transport and shaping mechanism through a bearing seat. A third reducer is installed on the outside of the chassis, and the input end of the third reducer is connected to the output end of the third motor, and the output end of the third reducer is connected to one of the pressure rollers.

[0013] Preferably, a plurality of sprockets are installed at the end of the pressing roller, and the sprockets on adjacent pressing rollers are connected by chain transmission.

[0014] Preferably, several groups of support plates are symmetrically installed on the top side of the casing, and the support plates are connected to the ends of the adjustment frame through bolts and nuts. A spring is installed on the outside of the bolts and between the support plates and the adjustment frame. A fixing rod flush with the pressure roller is installed on the adjustment frame, and a scraper plate is installed on the fixing rod.

[0015] The beneficial effects of the utility model are: good coal flow shaping effect, fast detection speed, and high accuracy compared with traditional sample test results;

[0016] It has achieved a new breakthrough in online coal detection, subverted the traditional standard process of mining, processing and chemical processing, and saved a lot of transportation, labor and equipment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the casing structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the coal drop pipe of the utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the casing of the utility model;

[0021] Figure 5 For this utility model Figure 4 A partial enlarged view of area A in the middle;

[0022] Figure 6 This is a schematic diagram of the structure of the coal flow dynamic transportation and shaping mechanism of the utility model.

[0023] Legend:

[0024] 1. Casing; 2. Coal drop pipe; 3. Crusher; 4. Drum; 5. Belt; 6. Support roller; 7. Coal flow dynamic scraper plate; 8. Coal flow dynamic transport and shaping mechanism; 9. Optical ray detector; 10. First reducer; 11. First motor; 12. Rotating gear; 13. Rotating shaft; 14. Rotating arm; 15. Support arm; 16. Sweeping plate; 17. Pull rod; 18. Tension spring; 19. Mounting arm; 20. V-shaped scraper; 21. Second reducer; 22. Second motor; 23. Press roller; 24. Sprocket; 25. Chain; 26. Third reducer; 27. Third motor; 28. Support plate; 29. ​​Adjusting frame; 30. Bolt; 31. Spring; 32. Fixing rod; 33. Scraper plate; 34. Elastic arm; 35. Scraper. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Specific examples are given below.

[0027] See also Figures 1 to 6, a coal quality online rapid detection device, including a casing 1, a coal drop pipe 2, a crusher 3, a coal flow dynamic scraper 7, a coal flow dynamic transport shaping mechanism 8 and an optical ray detector 9. The maintenance ports of the casing 1 are all sealed with sealing strips to ensure relative isolation between the internal and external environments of the equipment. A coal drop pipe 2 is installed at the feed end of the casing 1, and a crusher 3 is installed on the coal drop pipe 2. The particle size of the feed coal is 13 mm, and the crusher 3 realizes the crushing of the coal quality. The 13 mm particle size coal sample enters the crusher 3 and passes through the crusher 3 to crush the particle size of 13 mm to 6 mm. Two rotating shafts 13 are installed horizontally inside the coal drop pipe 2, and the two rotating shafts 13 are installed with staggered stirring rods. A first reducer 10 is installed on the outside of the coal drop pipe 2, and a first reducer 10 is installed on the outside of the coal drop pipe 2. The input end of a reducer 10 is connected to the output end of a first motor 11. The ends of two rotating shafts 13 are respectively installed with mutually meshing rotating teeth 12, and one of the rotating shafts 13 is connected to the output end of the first reducer 10. When the first motor 11 works, the first reducer 10 adjusts the speed to drive one of the rotating shafts 13 to rotate. The two rotating shafts 13 rotate synchronously through the meshing transmission of the rotating teeth 12. The staggered arrangement of stirring rods fully ensures that coal with a particle size of less than 6 mm passes through, and the coal can be fully mixed and effectively prevented from being blocked by the coal drop pipe 2. The gap between the stirring rod and the belt 5 is ≤25 mm, which not only ensures the passability of the coal inside it, but also meets the surface uniformity of the coal flow thickness of the minimum requirement of 30 mm for the coal quality rapid inspection optical module;

[0028] Drums 4 are installed at both ends of the casing 1, and the two drums 4 are connected by belt 5 transmission. The special features of the drum 4 are that its surface is knurled or rubberized. Several rollers 6 are installed inside the casing 1, and the rollers 6 are in contact with the bottom side of the belt 5 for transmission. A second reducer 21 is installed on the outside of the casing 1, and the input end of the second reducer 21 is connected to the output end of the second motor 22. The output end of the second reducer 21 is connected to one of the drums 4. The second motor 22 works, and the second reducer 21 adjusts the speed to drive one of the drums 4 to rotate, thereby realizing the conveying of coal by the belt 5. A discharging scraping assembly is installed at the tail of the belt 5, an internal hanging sweeping assembly is installed inside the belt 5, and a bottom scraping sweeping assembly is installed on the bottom side of the belt 5. The discharging scraping sweeping assembly includes The housing 1 is rotatably mounted with a rotating arm 14, and a support arm 15 is mounted at one end of the rotating arm 14, a scraping plate 16 is mounted on the support arm 15, and the other end of the rotating arm 14 is connected to the pull rod 17 by a tension spring 18. The discharging scraping assembly is arranged at the outlet of the belt 5, and is used to clean the coal stuck on the top of the belt 5. The material is made of polyurethane, which effectively increases the conformity and wear resistance during scraping, and ensures that the surface of the belt 5 is clean, thereby increasing the life of the belt 5. The internal hanging sweeping assembly includes a mounting arm 19, and the mounting arm 19 is equipped with a V-shaped scraper 20. The internal hanging sweeping assembly scrapes the coal powder inside the belt 5 to both sides. The material is made of polyurethane, which effectively increases the conformity and wear resistance during scraping, and ensures that the surface of the belt 5 is clean, thereby increasing the life of the belt 5.

[0029] The bottom scraping assembly includes an elastic arm 34 and a scraper 35. The scraper 35 is installed on the elastic arm 34. The scraper 35 of the bottom scraping assembly scrapes away the coal powder on the bottom side of the belt 5.

[0030] The casing 1 is sequentially installed with a coal flow dynamic scraper plate 7, a coal flow dynamic transport shaping mechanism 8 and an optical ray detector 9. A soft curtain is installed inside the casing 1 and on one side of the coal flow dynamic scraper plate 7. The coal flow dynamic scraper plate 7 and the soft curtain are mainly used to reduce the height of the coal flow and reduce the intercommunication in the coal flow channel. When the coal enters the device, due to the height difference, the coal falling on the belt 5 will produce fly ash or dirty air flow, and fly ash or dirty air can easily cause contamination of the X-ray sight glass. The coal flow dynamic scraper plate 7 can resist the fly ash or dirty air in a fixed space in multiple dimensions. The optical ray detector 9 effectively detects the calorific value, moisture, ash and sulfur content in the coal components.

[0031] The coal flow dynamic transport and shaping mechanism 8 includes a chassis, a plurality of pressure rollers 23 are installed inside the coal flow dynamic transport and shaping mechanism 8 through a bearing seat, a third reducer 26 is installed on the outside of the chassis, and the input end of the third reducer 26 is connected to the output end of the third motor 27, and the output end of the third reducer 26 is connected to one of the pressure rollers 23, a plurality of sprockets 24 are installed at the end of the pressure roller 23, and the sprockets 24 on adjacent pressure rollers 23 are connected by a chain 25. A plurality of groups of support plates 28 are symmetrically installed on the top side of the casing 1, and the support plates 28 and the ends of the adjustment frame 29 are connected by bolts 30 and nuts. A spring 31 is installed on the outside of the bolt 30 and between the support plate 28 and the adjusting frame 29. A fixing rod 32 flush with the pressure roller 23 is installed on the adjusting frame 29, and a scraper plate 33 is installed on the fixing rod 32. The third motor 27 works, and the third reducer 26 adjusts the speed to drive one of the pressure rollers 23 to rotate. The sprockets 24 and the chain 25 cooperate to transmit the power, so as to realize the synchronous rotation of all the pressure rollers 23. The rotating pressure roller 23 is used to shape the coal passing through, and the scraper plate 33 is used to scrape off the coal that is adhered to the pressure roller 23 when the pressure roller 23 rotates.

[0032] The three pressing rollers 23 are made of three main materials: chrome-plated steel, zirconia ceramic, and engineering plastic. Different materials correspond to different coal qualities and are selected based on the user's coal quality. The diameter of the pressing rollers 23 is 200mm, which minimizes the contact angle between the pressing rollers 23 and the coal flow while ensuring sufficient space for coal flow shaping, thereby reducing the risk of coal sticking to the pressing rollers 23.

[0033] The first two scrapers 33 in contact with the coal flow are placed at the front end of the pressure roller 23 to prevent the pressure roller 23 from sticking to the coal and carrying away the coal, which would affect the smoothness of the coal flow after shaping.

[0034] The lengths of the three pressing rollers 23 are designed to be 150 mm, 148 mm and 143 mm respectively. The initial coal density is 0.65 kg / L. 3 Molding to 0.85kg / L 3 ;

[0035] The lengths of the three pressing rollers 23 are set to 150 mm, 148 mm, and 145 mm respectively along the direction of coal flow;

[0036] The three pressing rollers 23 are installed at different heights in the machine box. The installation heights of the three pressing rollers 23 decrease step by step along the direction of coal flow. The height difference between the three pressing rollers 23 and the coal flow is adjusted according to the specific usage, and the initial height difference is 5mm.

[0037] The distances between the roller surfaces of the three pressure rollers 23 and the belt 5 are set to 40 mm, 35 mm, and 30 mm respectively.

[0038] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A coal quality online rapid detection device, characterized in that: The invention comprises a casing (1), a coal drop pipe (2), a crusher (3), a coal flow dynamic scraper plate (7), a coal flow dynamic transport shaping mechanism (8) and an optical ray detector (9). The feeding end of the casing (1) is provided with a coal drop pipe (2), the coal drop pipe (2) is provided with a crusher (3), two rotating shafts (13) are provided for horizontal rotation inside the coal drop pipe (2), and the two rotating shafts (13) are provided with staggered stirring rods, rollers (4) are provided at both ends of the casing (1), and the two rollers (4) are connected by a belt (5), a plurality of rollers (6) are provided inside the casing (1), and the rollers (6) are contact-driven with the bottom side of the belt (5), and the casing (1) is provided with a coal flow dynamic scraper plate (7), a coal flow dynamic transport shaping mechanism (8) and an optical ray detector (9) in sequence.

2. The on-line rapid detection device for coal quality according to claim 1, characterized in that: A first reducer (10) is installed on the outside of the coal drop pipe (2), and the input end of the first reducer (10) is connected to the output end of the first motor (11). The ends of the two rotating shafts (13) are respectively installed with mutually meshing rotating teeth (12), and one of the rotating shafts (13) is connected to the output end of the first reducer (10).

3. The on-line rapid detection device for coal quality according to claim 2, characterized in that: The tail of the belt (5) is equipped with a discharge scraping assembly, the interior of the belt (5) is equipped with an internal hanging sweeping assembly, the bottom side of the belt (5) is equipped with a bottom scraping sweeping assembly, the discharge scraping sweeping assembly includes a rotating arm (14) rotatably mounted with the housing (1), and a support arm (15) is mounted at one end of the rotating arm (14), a scraping plate (16) is mounted on the support arm (15), and the other end of the rotating arm (14) is connected to the pull rod (17) through a tension spring (18).

4. The on-line rapid detection device for coal quality according to claim 3, characterized in that: The internal hanging sweeping assembly comprises a mounting arm (19), the mounting arm (19) being equipped with a V-shaped scraper (20), and the bottom scraping sweeping assembly comprises an elastic arm (34) and a scraper (35), the elastic arm (34) being equipped with a scraper (35).

5. The on-line rapid detection device for coal quality according to claim 4, characterized in that: A second reducer (21) is installed outside the housing (1), and the input end of the second reducer (21) is connected to the output end of the second motor (22), and the output end of the second reducer (21) is connected to one of the rollers (4).

6. The on-line rapid detection device for coal quality according to claim 5, characterized in that: The coal flow dynamic transport and shaping mechanism (8) comprises a chassis mounted on a housing (1); a plurality of pressure rollers (23) are mounted inside the coal flow dynamic transport and shaping mechanism (8) via a bearing seat; the lengths of the three pressure rollers (23) are 150 mm, 148 mm, and 143 mm, respectively; a third reducer (26) is mounted outside the chassis; an input end of the third reducer (26) is connected to an output end of a third motor (27); and an output end of the third reducer (26) is connected to one of the pressure rollers (23).

7. The on-line rapid detection device for coal quality according to claim 6, characterized in that: A plurality of sprockets (24) are installed at the end of the pressing roller (23), and the sprockets (24) on adjacent pressing rollers (23) are connected by a chain (25).

8. The on-line rapid detection device for coal quality according to claim 7, characterized in that: A plurality of support plates (28) are symmetrically mounted on the top side of the housing (1), and the support plates (28) are connected to the ends of the adjustment frame (29) by bolts (30) and nuts. A spring (31) is mounted outside the bolts (30) and between the support plates (28) and the adjustment frame (29). A fixing rod (32) flush with the pressure roller (23) is mounted on the adjustment frame (29), and a scraper plate (33) is mounted on the fixing rod (32).

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