A pulverized coal regulating device for a boiler pulverizing system

Abstract

This invention relates to the field of pulverized coal regulation technology, specifically to a pulverized coal regulation device for a boiler pulverizing system. The device includes: a body comprising a casing with a ventilation pipe on its surface; and a tilting mechanism comprising a guide block fixedly connected to the surface of the casing, a first movable rod movably connected to the surface of the guide block, a first movable block fixedly connected to the surface of the first movable rod, and a second movable block fixedly connected to the surface of the first movable block. This invention, through the cooperation between the tilting mechanism and the protective mechanism, allows the baffle inside the casing to rotate on one side of the casing by adjusting the direction of extension and retraction of the guide block. This ensures that the baffle can regulate pulverized coal without dead zones during use, completely delivering pulverized coal from inside the casing into the boiler and preventing pulverized coal residue inside the casing from affecting the normal operation of the regulating device. This solves the problem of dead zones in regulation.

Description

Technical Field

[0001] This invention relates to the field of air-coal regulation technology, specifically to an air-coal regulation device for a boiler pulverizing system. Background Technology

[0002] For a long time, the online adjustment of primary air and pulverized coal in thermal power units has been very limited in power plant applications, resulting in a very crude adjustment method, which has greatly restricted the effectiveness of boiler combustion optimization and adjustment. Balancing the output of each burner and rationally configuring the pulverized coal velocity, concentration, and flow rate at the burner nozzles are of great significance for the safe and economical operation of the boiler, but this is often difficult to achieve due to the lack of accurate and reliable monitoring and adjustment methods.

[0003] Existing air-coal regulating devices are prone to jamming and are difficult to adjust during use, resulting in an uneven distribution of air and coal in the boiler, which significantly affects the safe, stable, and economical operation of the boiler. Compared with patent CN201921728299.7, although this patent controls the internal resistance through a baffle, one side of the baffle is a dead zone for airflow, which is prone to coal dust accumulation. This causes the regulating mechanism to jam after prolonged use, affecting the normal transport of coal dust. Therefore, there is an urgent need to design an air-coal regulating device for boiler pulverizing systems to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a coal dust regulating device for a boiler pulverizing system, in order to solve the problem mentioned in the background art that the existing coal dust regulating device has a dead zone on one side of the baffle, which is prone to coal dust accumulation, causing the regulating mechanism to jam after long-term use and affecting the normal transportation of coal dust.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an air-coal regulating device for a boiler pulverizing system, comprising:

[0006] The device body includes a housing, on the surface of which a ventilation pipe is provided and a nozzle pipe is provided on the surface of which a nozzle pipe is provided;

[0007] A flipping mechanism includes a guide block, which is fixedly connected to the surface of a housing. A first movable rod is movably connected to the surface of the guide block. A first movable block is fixedly connected to the surface of the first movable rod. A second movable block is fixedly connected to the surface of the first movable block. A rack is fixedly connected to the surface of the second movable block. A cylinder is fixedly connected to the surface of the guide block. A movable shaft is movably connected to the surface of the cylinder. A first movable column is movably connected to the surface of the housing. A first gear is fixedly connected to the surface of the first movable column. A second gear is fixedly connected to the surface of the first movable column. A baffle is movably connected to the surface of the housing. A gear ring is fixedly connected to the surface of the baffle.

[0008] Preferably, the surface of the housing is provided with a protective mechanism, the protective mechanism including a first fixed rod, the first fixed rod being fixedly connected to the surface of the housing, a second fixed rod being movably connected to the surface of the first fixed rod, a first spring being fixedly connected to the surface of the second fixed rod, a second movable rod being fixedly connected to the surface of the first spring, a limit block being fixedly connected to the surface of the first movable block, a third movable rod being movably connected to the surface of the housing, a second spring being fixedly connected to the surface of the third movable rod, a limit rod being fixedly connected to the surface of the third movable rod, and a limit groove being formed on the surface of the housing.

[0009] Preferably, the surface of the housing is provided with a cleaning mechanism, the cleaning mechanism including a motor, the motor being fixed to the surface of the housing, an output shaft being provided on the surface of the motor, a first bevel gear being fixedly connected to the output shaft of the motor, a second movable column being movably connected to the surface of the housing, a second bevel gear being fixedly connected to the surface of the second movable column, a turntable being fixedly connected to the surface of the second movable column, a fourth movable rod being movably connected to the surface of the turntable, a cleaning frame being movably connected to the surface of the fourth movable rod, and a guide groove being fixedly connected to the surface of the housing.

[0010] Preferably, each of the first movable blocks has a circular hole on its surface, the first movable rod passes through the circular hole of the first movable block, a fixing block is provided on the surface of the first movable block, the fixing block of the first movable block is fixedly connected to one end of the movable shaft, and the cylinder drives the movable shaft to extend and retract during the process, causing the first movable block to move on the surface of the housing, and the movement of the first movable block drives the movement of the first movable rod and the second movable block.

[0011] Preferably, a circular hole is provided on the surface of the housing, a bearing is fixedly connected to the circular surface of the housing, a first movable column is fixedly connected to the inner ring of the bearing, and the first gear and the second gear are respectively located at both ends of the circular hole in the housing.

[0012] Preferably, the surface of the baffle is provided with a semi-circular groove, the gear ring is fixed on the semi-circular groove of the baffle, the second gear and the baffle mesh with each other, and the rack and the first gear mesh with each other.

[0013] Preferably, the surface of the second fixed rod is provided with a rectangular groove, the first spring is inside the rectangular groove of the housing, the second movable rod slides on the rectangular groove of the second fixed rod, one end of the second movable rod is fixedly connected to the first spring, and the other end of the first spring is movably connected to the surface of the baffle.

[0014] Preferably, the limiting block is trapezoidal in shape, and a rectangular groove is provided on the surface of the housing. The limiting block moves within the rectangular groove of the housing. A circular hole for sliding a third movable rod is provided on the surface of the housing. The circular hole of the housing connects the limiting groove and the rectangular groove to each other. The limiting rod is semi-cylindrical in shape, and one end of the limiting rod abuts against a connecting baffle.

[0015] Preferably, the output shaft of the first bevel gear drives the first bevel gear to rotate, the first bevel gear and the second bevel gear mesh with each other, the first bevel gear drives the second bevel gear to rotate, the second bevel gear changes the rotation direction of the first bevel gear, a circular hole is opened on the surface of the housing, a bearing is fixedly connected to the circular hole of the housing, and a second movable column is fixedly connected to the bearing.

[0016] Preferably, a locking post is fixedly connected to the surface of the second movable column, and a locking post is fixedly connected to the surface of the cleaning frame. The fourth movable rod is connected to the locking post of the turntable and the second spring. A groove is provided on the side of the cleaning frame, and the cleaning frame slides on the surface of the guide groove through the groove.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. Through the cooperation between the flipping mechanism and the protective mechanism, the direction of the guide block's extension and retraction can determine which side of the baffle rotates inside the casing. This ensures that the baffle can control the pulverized coal without any dead angles during use, allowing the pulverized coal inside the casing to be completely fed into the boiler. This prevents pulverized coal residue inside the casing from affecting the normal operation of the regulating device, thus solving the problem of dead angles in the control process.

[0019] 2. By placing the output power of the cleaning mechanism on the outer surface of the casing, the internal components are less affected, resulting in a lower failure rate during machine operation. The cleaning frame also cleans the inner surface of the casing, ensuring that the inside of the casing is always filled with unused fresh pulverized coal. This not only improves the service life of the regulating device but also increases the efficiency of pulverized coal combustion in the boiler. Attached Figure Description

[0020] Figure 1 This is a frontal perspective view of the structure of the present invention;

[0021] Figure 2 This is a partial exploded three-dimensional view of the structure of the present invention from the front view;

[0022] Figure 3 This is a partial exploded three-dimensional view of the structure of the present invention from below;

[0023] Figure 4 For the present invention Figure 2 Enlarged structural diagram at point A;

[0024] Figure 5 For the present invention Figure 1 Enlarged structural diagram at point B;

[0025] Figure 6 For the present invention Figure 3 Enlarged structural diagram at point C;

[0026] Figure 7 This is a partial exploded three-dimensional view of the flipping mechanism of the present invention.

[0027] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point D;

[0028] Figure 9 For the present invention Figure 2 A magnified structural diagram at point E in the middle.

[0029] In the diagram: 1. Housing; 11. Ventilation pipe; 12. Nozzle pipe; 2. Guide block; 21. First movable rod; 22. First movable block; 23. Second movable block; 24. Rack; 25. Cylinder; 26. Movable shaft; 27. First movable column; 28. First gear; 29. ​​Second gear; 210. Gear ring; 211. Baffle; 3. First fixed rod; 31. Second fixed rod; 32. First spring; 33. Second movable rod; 34. Limit block; 35. Third movable rod; 36. Second spring; 37. Limit rod; 38. Limit groove; 4. Motor; 41. First bevel gear; 42. Second bevel gear; 43. Second movable column; 44. Turntable; 45. Fourth movable rod; 46. Cleaning frame; 47. Guide groove. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figure 1-9 One embodiment provided by the present invention:

[0032] A pulverized coal regulating device for a boiler pulverizing system, comprising:

[0033] The apparatus includes a casing 1, on the surface of which a ventilation pipe 11 is provided. The ventilation pipe 11 sends pulverized coal from inside the casing 1 into the boiler through primary air and secondary air. A nozzle pipe 12 is provided on the surface of the casing 1 and is connected to the boiler.

[0034] The flipping mechanism includes a guide block 2, which is fixedly connected to the surface of the housing 1. A first movable rod 21 is movably connected to the surface of the guide block 2. A first movable block 22 is fixedly connected to the surface of the first movable rod 21. A second movable block 23 is fixedly connected to the surface of the first movable block 22. A rack 24 is fixedly connected to the surface of the second movable block 23. A third movable rod 35 is fixedly connected to the surface of the guide block 2. A movable shaft 26 is movably connected to the surface of the cylinder 25. A first movable column 27 is movably connected to the surface of the housing 1. A first gear 28 is fixedly connected to the surface of the first movable column 27. A second gear 29 is fixedly connected to the surface of the first movable column 27. A baffle 211 is movably connected to the surface of the housing 1. A gear ring 210 is fixedly connected to the surface of the baffle 211.

[0035] Furthermore, a protective mechanism is provided on the surface of the housing 1. The protective mechanism includes a first fixed rod 3, which is fixedly connected to the surface of the housing 1. A second fixed rod 31 is movably connected to the surface of the first fixed rod 3. A first spring 32 is fixedly connected to the surface of the second fixed rod 31. A second movable rod 33 is fixedly connected to the surface of the first spring 32. A limit block 34 is fixedly connected to the surface of the first movable block 22. A cylinder 25 is movably connected to the surface of the housing 1. A second spring 36 is fixedly connected to the surface of the third movable rod 35. A limit rod 37 is fixedly connected to the surface of the third movable rod 35. A limit groove 38 is formed on the surface of the housing 1.

[0036] Furthermore, a cleaning mechanism is provided on the surface of the housing 1. The cleaning mechanism includes a motor 4, which is fixed on the surface of the housing 1. An output shaft is provided on the surface of the motor 4. A first bevel gear 41 is fixedly connected to the output shaft of the motor 4. A second movable column 43 is movably connected to the surface of the housing 1. A second bevel gear 42 is fixedly connected to the surface of the second movable column 43. A turntable 44 is fixedly connected to the surface of the second movable column 43. A fourth movable rod 45 is movably connected to the surface of the turntable 44. A cleaning frame 46 is movably connected to the surface of the fourth movable rod 45. A guide groove 47 is fixedly connected to the surface of the housing 1.

[0037] Furthermore, circular holes are provided on the surface of the first movable block 22, and the first movable rod 21 passes through the circular holes of the first movable block 22. A fixed block is provided on the surface of the first movable block 22, and the fixed block of the first movable block 22 is fixedly connected to one end of the movable shaft 26. During the extension and retraction of the movable shaft 26 driven by the cylinder 25, the first movable block 22 moves on the surface of the housing 1. The movement of the first movable block 22 drives the movement of the first movable rod 21 and the second movable block 23. During the movement of the first movable rod 21, the rack 24 drives the first movable column 27 to rotate through the first gear 28. Since the flipping mechanism is symmetrically distributed, the first movable column 27 is movably connected to both the upper and lower ends of the housing 1. The direction of rotation is determined according to the up and down movement of the first movable rod 21.

[0038] Furthermore, a circular hole is provided on the surface of the housing 1, and a bearing is fixedly connected to the circular hole of the housing 1. A first movable column 27 is fixedly connected to the inner ring of the bearing. A first gear 28 and a second gear 29 are respectively located at both ends of the circular hole of the housing 1. During the rotation of the first movable column 27, the first gear 28 drives the gear ring 210 to rotate. The second gear 29 and the gear ring 210 at the other end of the housing 1 begin to separate, causing the baffle 211 to start rotating at one end.

[0039] Furthermore, a semi-circular groove is provided on the surface of the baffle 211, and the toothed ring 210 is fixed on the semi-circular groove of the baffle 211. The second gear 29 and the baffle 211 mesh with each other, and the rack 24 and the first gear 28 mesh with each other. The movement of the rack 24 can cause the first gear 28, the second gear 29 and the toothed ring 210 to move mechanically at the same time.

[0040] Furthermore, a rectangular groove is formed on the surface of the second fixed rod 31, the first spring 32 is inside the rectangular groove of the housing 1, and the second movable rod 33 slides on the rectangular groove of the second fixed rod 31. One end of the second movable rod 33 is fixedly connected to the first spring 32, and the other end of the first spring 32 is movably connected to the surface of the baffle 211. In order to maintain stability during the movement of the baffle 211, the elastic force of the first spring 32 is used to firmly pull the baffle 211 through the second movable rod 33.

[0041] Furthermore, the limiting block 34 is trapezoidal in shape, and a rectangular groove is provided on the surface of the housing 1. The limiting block 34 moves in the rectangular groove of the housing 1. A circular hole is provided on the surface of the housing 1 for the sliding of the third movable rod 35. The circular hole of the housing 1 connects the limiting groove 38 and the rectangular groove. The limiting rod 37 is semi-cylindrical in shape, and one end of the limiting rod 37 abuts against the baffle 211. Because the baffle 211 may be pulled by the first spring 32 alone during use, the service life of the baffle 211 is greatly reduced. When the limiting block 34 moves with the first movable block 22, it will squeeze the third movable rod 35, causing the limiting rod 37 to protrude from the limiting groove 38 to limit the baffle 211.

[0042] Furthermore, the output shaft of the first bevel gear 41 drives the first bevel gear 41 to rotate. The first bevel gear 41 and the second bevel gear 42 mesh with each other. The first bevel gear 41 drives the second bevel gear 42 to rotate. The second bevel gear 42 changes the rotation direction of the first bevel gear 41. A circular hole is opened on the surface of the housing 1. A bearing is fixedly connected to the circular hole of the housing 1. A second movable column 43 is fixedly connected to the bearing. The second movable column 43 isolates the coal powder, so that the turntable 44 inside the housing 1 can still rotate.

[0043] Furthermore, a locking post is fixedly connected to the surface of the second movable column 43, and a locking post is fixedly connected to the surface of the cleaning frame 46. The fourth movable rod 45 is connected to the locking post of the turntable 44 and the second spring 36. Since the locking post on the turntable 44 is at the edge, it stretches the fourth movable rod 45 during rotation. A groove is provided on the side of the cleaning frame 46. The cleaning frame 46 slides on the surface of the guide groove 47 through the groove. During the stretching process of the fourth movable rod 45, the cleaning frame 46 slides on the surface of the guide groove 47.

[0044] Working principle: The cylinder 25 drives the movable shaft 26 to move. During the movement of the movable shaft 26, the fixed block drives the first movable block 22 to move. The movement of the first movable block 22 drives the first movable rod 21 and the second movable block 23 to move. During the movement of the second movable block 23, the first gear 28 drives the first movable column 27 to rotate. The first movable column 27 drives the second gear 29 to rotate. The second gear 29 drives the baffle 211 to rotate inside the housing 1 through the gear ring 210. At the same time, the flipping mechanism has a symmetrical structure. When the first movable rod 21 moves in the opposite direction, it can realize the rotation of the baffle. The other end of 211 rotates inside the housing 1. A protective mechanism is set in the flipping mechanism to ensure the service life of the flipping mechanism. The elastic force of the first spring 32 forms a traction force on the baffle 211 through the second movable rod 33. At the same time, the first movable block 22 drives the limit block 34 to move simultaneously during operation. During the movement of the limit block 34 to both sides, the limit rod 37 will be engaged in the limit groove 38 to ensure the normal rotation of the baffle 211. When the first movable block 22 is stationary, the second spring 36 compresses the third movable rod 35, causing the limit rod 37 to abut against the baffle 211 to form a limit.

[0045] The first bevel gear 41 is rotated by the motor 4, and the second movable column 43 changes the rotation direction of the first bevel gear 41. The second bevel gear 42 drives the turntable 44 to rotate on the inner surface of the housing 1 through the second movable column 43. During the rotation, the eccentric pin on the surface of the turntable 44 drives the cleaning frame 46 to move through the fourth movable rod 45. Since the groove on the cleaning frame 46 slides on the surface of the guide groove 47, the cleaning frame 46 makes linear repetitive motion on the inner surface of the housing 1.

[0046] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A pulverized coal and air regulating device for a boiler pulverizing system, characterized in that, include: The device body includes a housing (1), on the surface of which a ventilation pipe (11) is provided, and on the surface of which a nozzle pipe (12) is provided. The flipping mechanism includes a guide block (2), which is fixedly connected to the surface of the housing (1). A first movable rod (21) is movably connected to the surface of the guide block (2). A first movable block (22) is fixedly connected to the surface of the first movable rod (21). A second movable block (23) is fixedly connected to the surface of the first movable block (22). A rack (24) is fixedly connected to the surface of the second movable block (23). A cylinder (25) is fixedly connected to the surface of the guide block (2). A movable shaft (26) is movably connected to the surface of the cylinder (25). A first movable column (27) is movably connected to the surface of the housing (1). A first gear (28) is fixedly connected to the surface of the first movable column (27). A second gear (29) is fixedly connected to the surface of the first movable column (27). A baffle (211) is movably connected to the surface of the housing (1). A gear ring (210) is fixedly connected to the surface of the baffle (211). The surface of the housing (1) is provided with a protective mechanism, which includes a first fixed rod (3), the first fixed rod (3) is fixedly connected to the surface of the housing (1), the surface of the first fixed rod (3) is movably connected to a second fixed rod (31), the surface of the second fixed rod (31) is fixedly connected to a first spring (32), the surface of the first spring (32) is fixedly connected to a second movable rod (33), the surface of the first movable block (22) is fixedly connected to a limit block (34), the surface of the housing (1) is movably connected to a third movable rod (35), the surface of the third movable rod (35) is fixedly connected to a second spring (36), the surface of the third movable rod (35) is fixedly connected to a limit rod (37), and a limit groove (38) is formed on the surface of the housing (1). The surface of the baffle (211) is provided with a semi-circular groove, the toothed ring (210) is fixed on the semi-circular groove of the baffle (211), the second gear (29) and the baffle (211) mesh with each other, and the rack (24) and the first gear (28) mesh with each other.

2. The air-coal regulating device for a boiler pulverizing system according to claim 1, characterized in that: The surface of the housing (1) is provided with a cleaning mechanism, which includes a motor (4). The motor (4) is fixed on the surface of the housing (1). An output shaft is provided on the surface of the motor (4). A first bevel gear (41) is fixedly connected to the output shaft of the motor (4). A second movable column (43) is movably connected to the surface of the housing (1). A second bevel gear (42) is fixedly connected to the surface of the second movable column (43). A turntable (44) is fixedly connected to the surface of the second movable column (43). A fourth movable rod (45) is movably connected to the surface of the turntable (44). A cleaning frame (46) is movably connected to the surface of the fourth movable rod (45). A guide groove (47) is fixedly connected to the surface of the housing (1).

3. The air-coal regulating device for a boiler pulverizing system according to claim 1, characterized in that: The first movable block (22) has a circular hole on its surface. The first movable rod (21) passes through the circular hole of the first movable block (22). A fixed block is provided on the surface of the first movable block (22). The fixed block of the first movable block (22) is fixedly connected to one end of the movable shaft (26). During the process of the cylinder (25) driving the movable shaft (26) to extend and retract, the first movable block (22) moves on the surface of the housing (1). The movement of the first movable block (22) drives the first movable rod (21) and the second movable block (23) to move.

4. The air-coal regulating device for a boiler pulverizing system according to claim 3, characterized in that: The housing (1) has a circular hole on its surface. A bearing is fixedly connected to the circular surface of the housing (1). A first movable column (27) is fixedly connected to the inner ring of the bearing. The first gear (28) and the second gear (29) are located at the two ends of the circular hole of the housing (1).

5. The air-coal regulating device for a boiler pulverizing system according to claim 1, characterized in that: The surface of the second fixed rod (31) is provided with a rectangular groove. The first spring (32) is inside the rectangular groove of the housing (1). The second movable rod (33) slides on the rectangular groove of the second fixed rod (31). One end of the second movable rod (33) is fixedly connected to the first spring (32), and the other end of the first spring (32) is movably connected to the surface of the baffle (211).

6. The air-coal regulating device for a boiler pulverizing system according to claim 5, characterized in that: The limiting block (34) is trapezoidal in shape, and a rectangular groove is provided on the surface of the housing (1). The limiting block (34) moves in the rectangular groove of the housing (1). A circular hole for sliding the third movable rod (35) is provided on the surface of the housing (1). The circular hole of the housing (1) connects the limiting groove (38) and the rectangular groove to each other. The limiting rod (37) is semi-cylindrical in shape, and one end of the limiting rod (37) abuts against the connecting baffle (211).

7. The air-coal regulating device for a boiler pulverizing system according to claim 2, characterized in that: The output shaft of the first bevel gear (41) drives the first bevel gear (41) to rotate. The first bevel gear (41) and the second bevel gear (42) mesh with each other. The first bevel gear (41) drives the second bevel gear (42) to rotate. The second bevel gear (42) changes the rotation direction of the first bevel gear (41). A circular hole is provided on the surface of the housing (1). A bearing is fixedly connected to the circular hole of the housing (1). A second movable column (43) is fixedly connected to the bearing.

8. The air-coal regulating device for a boiler pulverizing system according to claim 2, characterized in that: The second movable column (43) is fixedly connected to a locking post, and the cleaning frame (46) is fixedly connected to a locking post. The fourth movable rod (45) is connected to the locking post of the turntable (44) and the second spring (36). The side of the cleaning frame (46) is provided with a groove, and the cleaning frame (46) slides on the surface of the guide groove (47) through the groove.

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