A regulating baffle for air and powder airflow in a powder making system

Abstract

The present invention relates to the technical field of boilers, and more particularly to an adjusting baffle for the air-powder airflow of a pulverizing system. It solves the problem that it is inconvenient to concentrate the wind force to the downwind side. It comprises a tank body and a baffle body, an air inlet is provided at the top of the tank body, a first air outlet and a second air outlet are provided at both ends of the bottom of the tank body to connect the inside of the tank body, the first air outlet and the second air outlet are located at both ends of the air inlet, an air outlet member for connecting part of the first air outlet and the second air outlet is provided at the bottom of the tank body, the baffle body is slidably connected in the tank body, an on-off mechanism for synchronously staggered switching on and off of the first air outlet and the second air outlet is provided on the tank body, the baffle body is connected to the on-off mechanism, and the on-off mechanism controls the on-off according to the bias of the baffle body to the first air outlet and the second air outlet. The present invention facilitates concentrating the wind force to the downwind side and discharging it, effectively utilizing the wind force, and effectively improving the utilization rate of the wind force.

Description

Technical Field

[0001] The invention relates to the technical field of boilers, in particular to an adjusting baffle for air and powder airflow in a powder making system. Background Art

[0002] The control of boiler combustion includes the control of main steam pressure and optimal combustion conditions. The powder feeding amount of the powder feeder is usually adjusted according to the change of main steam pressure. Since the combustion condition of the boiler is related to the air-coal ratio, when the coal feeding amount changes, the air feeding amount of the blower should be changed accordingly to keep the excess air coefficient in the furnace at the optimal value when the boiler is burning and minimize the heat loss of exhaust gas. The relationship between the air volume of the blower and the coal feeding amount of the powder feeder is automatically found according to a certain optimization algorithm and optimization target to minimize the incomplete combustion loss and exhaust loss.

[0003] For a long time, the online adjustment of primary air and powder of thermal power units has been very limited in power plants, resulting in very extensive adjustment of air and powder, which to a large extent restricts the effect of boiler combustion optimization and adjustment. Balancing the output of each burner and reasonably configuring the coal powder velocity, concentration and flow rate of the burner nozzle are of great significance to the safe and economical operation of the boiler.

[0004] However, in the existing device, a plurality of air outlet channels are usually provided, and some of the air outlet channels are located on the upwind side. Since it is not convenient to concentrate the wind force to the downwind side, the wind force cannot be effectively utilized and the wind force utilization rate cannot be improved. Summary of the invention

[0005] The present invention provides an adjusting baffle for the air-powder airflow of a flour-making system, which is convenient for concentrating the wind force toward the downwind side and discharging it, so as to effectively utilize the wind force and effectively improve the utilization rate of the wind force.

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

[0007] A regulating baffle for the air flow of powder in a powder making system comprises a tank body and a baffle body, the top of the tank body is provided with an air inlet, the two ends of the bottom of the tank body are provided with a first air outlet and a second air outlet connected to the inside of the tank body, the first air outlet and the second air outlet are located at the two ends of the air inlet, the bottom of the tank body is provided with an air outlet piece for connecting part of the first air outlet and the second air outlet, the baffle body is slidably connected in the tank body, the tank body is provided with an on-off mechanism for synchronously and staggeredly switching on and off the first air outlet and the second air outlet, the baffle body is connected to the on-off mechanism, and the on-off mechanism controls the on-off according to the deflection of the baffle body to the first air outlet and the second air outlet.

[0008] The gear train is configured to be coupled to the gear unit and to provide a plurality of gears for the gear train, wherein the plurality of gears are coupled to the gear train and the plurality of gears are coupled to the gear train, wherein the plurality of gears are coupled to the gear train, and the plurality of gears are coupled to the gear train.

[0009] Furthermore, a spiral groove is circumferentially provided on the rotating shaft, a sliding rod is provided at the bottom of the baffle body, a sphere is provided at the bottom of the sliding rod, and the sphere is matched and arranged in the spiral groove.

[0010] Furthermore, a longitudinal straight groove is provided at the bottom of the tank body, and the center line of the straight groove coincides with the center line connecting the first air outlet and the second air outlet. A socket is opened on the side of the straight groove, and the socket is at least twice the length of the straight groove. A partition is provided in the socket, and the sliding rod is passed through the straight groove and fixedly connected to the partition.

[0011] Furthermore, the two groups of cover parts are respectively arranged at both sides of the sliding rod, the distance sensors are respectively arranged at the two side edges of the sliding rod, and the distance sensor is electrically connected to a corresponding telescopic cylinder. The output end of the telescopic cylinder is connected to the cover plate, and the cover plate covers the first air outlet or the second air outlet. When the baffle body moves toward the first air outlet or the second air outlet, the telescopic cylinder is driven to work by the corresponding distance sensor, thereby controlling the cover plate lock to release the blockage of the second air outlet or the first air outlet.

[0012] Furthermore, the air outlet member is a first air outlet pipe and a second air outlet pipe, the first air outlet pipe and the second air outlet pipe are respectively fixedly connected to two ends of the bottom of the tank body, and the first air outlet pipe and the second air outlet pipe are both staggered with the air flow port.

[0013] Furthermore, a longitudinal projection of the baffle body is located inside the air inlet, a cross section of the baffle body is V-shaped, and two sides of the baffle body are inclined toward the first air outlet and the second air outlet respectively.

[0014] Furthermore, the baffle body is provided with a longitudinally penetrating air hole.

[0015] Beneficial effects of the present invention:

[0016] It is convenient to concentrate the wind force to the downwind side and discharge it, effectively utilize the wind force and effectively improve the wind force utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the regulating baffle of the air-powder airflow of the powder making system;

[0018] Figure 2 This is a structural cross-sectional view of the regulating baffle of the air and powder airflow of the powder making system;

[0019] Figure 3 for Figure 2 A in the enlarged view;

[0020] Figure 4 It is a structural schematic diagram of the on-off mechanism;

[0021] Description of reference numerals:

[0022] 1. Tank body; 2. Baffle body; 3. Air inlet; 4. First air outlet; 5. Second air outlet; 6. Air outlet member; 7. On / off mechanism; 71. Rotating column; 72. First bevel gear; 73. Second bevel gear; 74. Rotating shaft; 75. Cover member; 8. Air flow port; 9. Spiral groove; 10. Sliding rod; 11. Sphere; 12. Straight groove; 13. Socket; 14. Partition; 15. Telescopic cylinder; 16. Distance sensor; 17. Cover plate; 18. First air outlet pipe; 19. Second air outlet pipe; 20. Air hole. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0024] like Figure 1-4 As shown, a regulating baffle for the air flow of powder in a powder making system comprises a tank body 1 and a baffle body 2, an air inlet 3 is provided at the top of the tank body 1, a first air outlet 4 and a second air outlet 5 connected to the inside of the tank body 1 are provided at both ends of the bottom of the tank body 1, the first air outlet 4 and the second air outlet 5 are located at both ends of the air inlet 3, an air outlet piece 6 for connecting part of the first air outlet 4 and the second air outlet 5 is provided at the bottom of the tank body 1, the baffle body 2 is slidably connected in the tank body 1, an on-off mechanism 7 for synchronously and staggeredly switching on and off the first air outlet 4 and the second air outlet 5 is provided on the tank body 1, the baffle body 2 is connected to the on-off mechanism 7, and the on-off mechanism 7 controls the on-off according to the deflection of the baffle body 2 to the first air outlet 4 and the second air outlet 5.

[0025] like Figure 1 , 23, in this embodiment, the on-off mechanism 7 includes a rotating column 71, a first bevel gear 72, a second bevel gear 73, a rotating shaft 74 and a cover member 75. The first air outlet 4 and the second air outlet 5 are columnar. The number of the rotating columns 71 is two and they are respectively rotated and matched in the first air outlet 4 and the second air outlet 5 in a one-to-one correspondence. The rotating column 71 is provided with a longitudinally connected air flow port 8, and the air flow port 8 is staggered with the channel in the air outlet member 6. The number of the first bevel gear 72 is two and they are coaxially arranged at both ends of the rotating shaft 74. The second bevel gear 73 is coaxially fixedly sleeved on the outer side of the rotating column 71. The first bevel gear 72 and the second bevel gear 73 are arranged in cooperation. The rotating shaft 74 is rotatably connected to the bottom surface of the tank body 1, the first bevel gear 72 is meshed with the second bevel gear 73, the baffle body 2 is slidably connected to the rotating shaft 74, the baffle body 2 moves along the axial direction of the rotating shaft 74 and synchronously drives the rotating shaft 74 to rotate, the cover member 75 is arranged at the top opening of the first air outlet 4 and the second air outlet 5, when the baffle body 2 moves toward the first air outlet 4 or the second air outlet 5, the cover member 75 is driven to lock and unlock the second air outlet 5 or the first air outlet 4; a spiral groove 9 is circumferentially provided on the rotating shaft 74, a sliding rod 10 is provided at the bottom of the baffle body 2, and a ball 11 is provided at the bottom of the sliding rod 10, and the ball 11 is cooperatively arranged in the spiral groove 9.

[0026] like Figure 1 , 3 As shown in Figure 4, in actual use, the wind blows onto the baffle body 2, and the movement of the baffle body 2 ensures that the larger side of the wind is biased toward the first air outlet 4 or the second air outlet 5. During the movement of the baffle body 2, the ball 11 is driven to slide in the spiral groove 9, and the rotating shaft 74 is synchronously rotated to drive the slide bar 10 to move toward the second bevel gear 73 located at the first air outlet 4 or the second air outlet 5. Under the action of the first bevel gear 72 and the second bevel gear 73, the rotating column 71 is driven to rotate, thereby controlling the connection and disconnection of the air flow port 8 and the first air outlet pipe 18 or the second air outlet pipe 19 on the air outlet member 6. In practice, the size of the connection and disconnection cross-section is controlled according to the moving distance of the baffle body 2, thereby controlling the connection and disconnection amount, so as to facilitate the wind force to be concentrated on the downwind side and discharged, effectively utilize the wind force, and effectively improve the wind force utilization rate.

[0027] like Figure 2 , 3 As shown, in this embodiment, a longitudinal straight groove 12 is provided at the bottom of the tank body 1, and the center line of the straight groove 12 coincides with the center line connecting the first air outlet 4 and the second air outlet 5. A socket 13 is provided on the side of the straight groove 12, and the socket 13 is at least twice the length of the straight groove 12. A partition 14 is provided in the socket 13, and the sliding rod 10 is passed through the straight groove 12 and fixedly connected to the partition 14.

[0028] like Figure 2 , 3As shown in 4 , when the baffle body 2 moves, the partition 14 can be ensured to be located in the socket 13 , effectively preventing wind from blowing toward the gap between the baffle body 2 and the straight groove 12 .

[0029] like Figure 2 , 4 As shown, in the present embodiment, two groups of cover members 75 are respectively arranged at both sides of the slide bar 10, namely, the telescopic cylinder 15, the distance sensor 16 and the cover plate 17. The distance sensors 16 are respectively arranged at the two side edges of the slide bar 10. A telescopic cylinder 15 is electrically connected to the distance sensor 16. The output end of the telescopic cylinder 15 is connected to the cover plate 17. The cover plate 17 covers the first air outlet 4 or the second air outlet 5. When the baffle body 2 moves toward the first air outlet 4 or the second air outlet 5, the telescopic cylinder 15 is driven to work by the corresponding distance sensor 16, thereby controlling the cover plate 17 to lock or unlock the second air outlet 5 or the first air outlet 4.

[0030] like Figure 1 , 2 As shown, in this embodiment, the air outlet member 6 is a first air outlet pipe 18 and a second air outlet pipe 19, and the first air outlet pipe 18 and the second air outlet pipe 19 are respectively fixedly connected to the two ends of the bottom of the tank body 1, and the first air outlet pipe 18 and the second air outlet pipe 19 are both staggered with the air flow port 8.

[0031] After passing through the air flow port 8 , the airflow flows out from the first air outlet pipe 18 and the second air outlet pipe 19 respectively, and the on-off effect at the first air outlet 4 and the second air outlet 5 is controlled by the moving distance of the baffle body 2 .

[0032] like Figure 2 As shown, in this embodiment, the longitudinal projection of the baffle body 2 is located in the air inlet 3, the cross-section of the baffle body 2 is V-shaped, and the two sides of the baffle body 2 are inclined toward the first air outlet 4 and the second air outlet 5 respectively.

[0033] It is beneficial to divert wind force, and through the deflection of wind force on both sides of the baffle body 2, the on-off of the first air outlet 4 and the second air outlet 5 is correspondingly controlled, which is convenient for controlling the airflow according to the deflection of wind force and effectively judging the larger lateral deflection of the wind flow.

[0034] like Figure 2 , 3 As shown in FIG. 4 , in this embodiment, a longitudinally penetrating air hole 20 is provided on the baffle body 2. The wind force entering from the air inlet 3 can smoothly pass through the side of the baffle body 2, which is convenient for reducing the obstruction of the baffle body 2 to the wind.

[0035] All technical features in this embodiment can be freely combined according to actual needs.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0038] The above embodiments are preferred implementation schemes of the present invention. In addition, other implementation schemes are also included. Any obvious replacement without departing from the concept of the present technical scheme is within the protection scope of the present invention.

Claims

1. A baffle for regulating air flow of a powder making system, comprising a tank body (1) and a baffle body (2), wherein the top of the tank body (1) is provided with an air inlet (3), and the bottom ends of the tank body (1) are provided with a first air outlet (4) and a second air outlet (5) communicating with the inside of the tank body (1), characterized in that: The first air outlet (4) and the second air outlet (5) are located at two ends of the air inlet (3); the bottom of the tank body (1) is provided with an air outlet member (6) for connecting part of the first air outlet (4) and the second air outlet (5); the baffle body (2) is slidably connected in the tank body (1); and the tank body (1) is provided with an on-off mechanism (7); The on-off mechanism (7) comprises a rotating column (71), a first bevel gear (72), a second bevel gear (73), a rotating shaft (74) and a cover member (75); the first air outlet (4) and the second air outlet (5) are columnar; the rotating columns (71) are two in number and are respectively rotatably matched in the first air outlet (4) and the second air outlet (5) in a one-to-one correspondence; the rotating column (71) is provided with a longitudinally connected air flow port (8); the air flow port (8) and the channel in the air outlet member (6) are arranged in an alternating manner; the first bevel gear (72) is two in number and is coaxially arranged at both ends of the rotating shaft (74); the second bevel gear (73) is coaxially fixedly sleeved on the outer side of the rotating column (71); the first bevel gear (72) and the second bevel gear (73) are coaxially fixedly sleeved on the outer side of the rotating column (71); the first bevel gear (72) and the second bevel gear (73) are respectively The second bevel gear (73) is arranged in cooperation, the rotating shaft (74) is rotatably connected to the bottom surface of the tank body (1), the first bevel gear (72) is meshed with the second bevel gear (73), the baffle body (2) is slidably connected to the rotating shaft (74), the baffle body (2) moves along the axial direction of the rotating shaft (74) and synchronously drives the rotating shaft (74) to rotate, the cover member (75) is arranged at the top openings of the first air outlet (4) and the second air outlet (5), when the baffle body (2) moves toward the first air outlet (4), the cover member (75) is driven to lock and unlock the first air outlet (4), and when the baffle body (2) moves toward the second air outlet (5), the cover member (75) is driven to lock and unlock the second air outlet (5).

2. The regulating baffle for the air and powder airflow of the powder making system according to claim 1, characterized in that: The rotating shaft (74) is provided with a spiral groove (9) circumferentially, the bottom of the baffle body (2) is provided with a slide rod (10), the bottom of the slide rod (10) is provided with a ball (11), and the ball (11) is arranged in the spiral groove (9).

3. The regulating baffle for the air and powder airflow of the powder making system according to claim 2, characterized in that: The bottom of the tank body (1) is provided with a longitudinally penetrating straight groove (12), the center line of the straight groove (12) coincides with the center line connecting the first air outlet (4) and the second air outlet (5), a socket (13) is provided on the side of the straight groove (12), the socket (13) is at least twice the length of the straight groove (12), a partition (14) is provided in the socket (13), and the sliding rod (10) is inserted into the straight groove (12) and fixedly connected to the partition (14).

4. The regulating baffle for the air and powder airflow of the powder making system according to claim 2 or 3, characterized in that: The two groups of the cover member (75) are respectively arranged at the two sides of the slide bar (10), the distance sensor (16) and the cover plate (17); the distance sensor (16) is respectively arranged at the two side edges of the slide bar (10); the distance sensor (16) is electrically connected to a corresponding telescopic cylinder (15); the output end of the telescopic cylinder (15) is connected to the cover plate (17); the cover plate (17) covers the first air outlet (4) or the second air outlet (5); when the baffle body (2) moves toward the first air outlet (4), the corresponding distance sensor (16) drives the telescopic cylinder (15) to work, thereby controlling the cover plate (17) to lock or unlock the first air outlet (4); when the baffle body (2) moves toward the second air outlet (5), the corresponding distance sensor (16) drives the telescopic cylinder (15) to work, thereby controlling the cover plate (17) to lock or unlock the second air outlet (5).

5. The regulating baffle for the air and powder airflow of the powder making system according to claim 1, characterized in that: The air outlet member (6) comprises a first air outlet pipe (18) and a second air outlet pipe (19); the first air outlet pipe (18) and the second air outlet pipe (19) are respectively fixedly connected to two ends of the bottom of the tank body (1); the first air outlet pipe (18) and the second air outlet pipe (19) are both arranged alternately with the air flow port (8).

6. The regulating baffle for the air and powder airflow of the powder making system according to claim 1, characterized in that: The longitudinal projection of the baffle body (2) is located inside the air inlet (3), the cross section of the baffle body (2) is V-shaped, and the two sides of the baffle body (2) are inclined toward the first air outlet (4) and the second air outlet (5) respectively.

7. The regulating baffle for the air and powder airflow of the powder making system according to claim 6, characterized in that: The baffle body (2) is provided with an air hole (20) which penetrates longitudinally.

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