Constant uniform distributor for coal crusher of coal conveying system of thermal power plant

Abstract

The application belongs to the field of coal conveying system of thermal power plant, in particular to a constant uniform distributor for coal crusher of coal conveying system of thermal power plant, which comprises a base, a fixed support frame and an electric telescopic support frame are fixedly installed at the top of the base, a sieve plate is installed at the top of the fixed support frame and the electric telescopic support frame, a hopper is installed at the bottom of the sieve plate, a feeding pipe is fixedly installed at the bottom of the hopper, a driving assembly is arranged at the bottom of the feeding pipe, two baffles are slidably installed on one side of the feeding pipe, a first conveying belt is installed below the feeding pipe, and a second conveying belt is installed below the sieve plate near one end of the fixed support frame. Through the arrangement of the driving assembly, the problem that the staff cannot accurately determine the specific number of coal blocks in the feeding pipe is avoided, so that the staff opens the feeding pipe too early or too late, reduces the work efficiency, improves the accuracy of the equipment, reduces the operation steps of the staff, and improves the work efficiency.

Description

Technical Field

[0001] This invention relates to the field of coal conveying systems in thermal power plants, specifically a constant uniform feeder for a coal crusher in a coal conveying system of a thermal power plant. Background Technology

[0002] A coal crusher is a device used in thermal power plants to break large coal blocks into small, combustible particles. The role of the coal crusher in a thermal power plant is to ensure that coal can burn completely in the boiler, thereby improving thermal efficiency and reducing fuel consumption. Through crushing, the specific surface area of ​​the coal increases, increasing the contact area with air and promoting the combustion process. In addition, the coal crusher can improve coal transportation and storage conditions, reducing losses during transportation. To ensure maximum and even utilization of heat, thermal power plants also install a feeder, a device that distributes raw materials and solid fuels as required. During operation, the feeder evenly distributes the crushed coal onto the feeding device.

[0003] Existing feeders are commonly used to evenly distribute coal lumps crushed by coal crushers. For example, a Chinese patent for a constant uniform feeder for a coal crusher in a coal conveying system of a thermal power plant (application number: CN202020604579.3) discloses a constant uniform feeder for a coal crusher in a coal conveying system of a thermal power plant. It includes a screen plate, a second conveyor belt on one side of the screen plate, a hopper below the screen plate, a feed pipe at the bottom of the hopper, a baffle and an electric push rod installed on one side of the feed pipe, and a first conveyor belt below the feed pipe. During operation, coal lumps of appropriate size are first screened out by the screen plate. Larger coal lumps are transported to the coal crusher for secondary crushing by the second conveyor belt. Coal lumps of appropriate size enter the feed pipe through the hopper. When the feed pipe is filled to a certain amount, the operator can push the upper baffle to close it by using the electric push rod to prevent the coal lumps in the hopper from entering the feed pipe. Then, the lower baffle is pushed by the electric push rod to make the coal lumps in the feed pipe fall onto the first conveyor belt, thus completing the uniform distribution of coal lumps.

[0004] In existing technologies, although the feed pipe and two baffles can maintain a relatively uniform coal volume during coal distribution, facilitating even distribution, there is a problem of difficulty in accurately determining the exact number of coal blocks in the feed pipe. This can lead to workers opening the feed pipe too early or too late. If the feed pipe is opened too early, there will be less coal in the feed pipe, which can affect the distribution effect and reduce work efficiency. If the feed pipe is opened too late, coal blocks can overflow from the funnel, polluting the working environment and reducing work efficiency. Therefore, to address the above problems, a constant uniform distributor for coal crushers in coal conveying systems of thermal power plants is proposed. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies and solve the problem of difficulty in accurately determining the exact number of coal blocks in the feed pipe, which leads to workers opening the feed pipe too early or too late, easily affecting the material distribution effect, or causing coal blocks to overflow from the funnel and reducing work efficiency, this invention proposes a constant uniform material distributor for coal crushers in coal conveying systems of thermal power plants.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a constant uniform feeder for a coal crusher in a coal conveying system of a thermal power plant, comprising a base; a fixed support frame and an electric telescopic support frame are fixedly installed at the top of the base, a screen plate is installed at the top of the fixed support frame and the electric telescopic support frame, a funnel is installed at the bottom of the screen plate, a feed pipe is fixedly installed at the bottom of the funnel, a drive assembly is provided at the bottom of the feed pipe, two baffles are slidably installed on one side of the feed pipe, a first conveyor belt is installed below the feed pipe, and a second conveyor belt is installed below the screen plate near the fixed support frame.

[0007] The drive assembly includes an inclined base plate located at the bottom of the feed pipe. A pressure sensor is fixedly installed on one side of the bottom of the inclined base plate. A drive rod is fixedly installed on one side of each baffle. Drive gear plates are installed around the periphery of each drive rod. A drive gear is meshed on one side of each drive gear. A motor is installed on one side of each drive gear. A supplementary assembly is provided on the other side of the drive gear. This improves the accuracy of the equipment, reduces the number of operating steps for workers, and increases work efficiency.

[0008] Preferably, each of the drive tooth plates has a delay groove on the side near the drive rod, and the drive rod is slidably installed on the inner wall of the delay groove. The distance between the two ends of the delay groove is equal to the distance between the two sides of the inner wall of the feed pipe; this improves the stability and reliability of the equipment and enhances the uniform distribution of coal blocks.

[0009] Preferably, the supplementary component includes a first gear disposed on one side of the drive gear, a second gear meshing with one side of the first gear, a shaft with a handle fixedly mounted on one side of the second gear, a long handle fixedly mounted on one side of the shaft with the handle, a rotating rod fixedly mounted at one end of the long handle, a rotating plate mounted around the rotating rod, a rotating seat rotatably mounted at the bottom end of the rotating plate, the rotating seat fixedly mounted at the top of the base, a swing groove formed on one side of the rotating plate, the rotating rod slidably mounted on the inner wall of the swing groove, a connecting rod rotatably mounted at the top of the rotating plate, a sliding rod rotatably mounted at one end of the connecting rod, a deflector plate fixedly mounted at the bottom end of the sliding rod, and both ends of the deflector plate passing through the guide plate and extending to one side of the guide plate; this improves the screening effect of the screen plate, thereby accelerating the replenishment of coal blocks and improving work efficiency.

[0010] Preferably, a guide groove is provided on one side of the guide plate, and the guide groove includes a shorter part, a longer part and two inclined parts; this reduces the impact of the sliding rod on the coal block at the top of the screen plate when it is reset, increases the residence time of the coal block at the top of the screen plate, and thus increases the screening effect of the screen plate.

[0011] Preferably, a baffle plate is rotatably installed at the intersection of the longer portion of the guide groove and the inclined portion. One end of the baffle plate near the fixed support frame abuts against the top of the longer portion of the guide groove, and one end of the other baffle plate abuts against the bottom of the longer portion of the guide groove. A torsion spring shaft is installed at one end of each baffle plate. This improves the stability and reliability of the equipment and enhances the screening effect of the screen plate.

[0012] Preferably, the number of tooth blocks on the outer wall of the drive gear is twice the number of tooth blocks on one side of the drive gear plate; this improves the stability and reliability of the equipment.

[0013] Preferably, the distance between the top and bottom of the agitator plate is less than the minimum distance from the top of the agitator plate to the top of the sieve plate, and the bottom of the agitator plate is bent; this allows some coal blocks to continue sliding through the gaps when the agitator plate moves the coal blocks.

[0014] Preferably, both ends of the sliding rod are equipped with limiting plates, and the limiting plates abut against one side of the guide plate; this can limit the movement of the sliding rod and improve the stability and reliability of the equipment.

[0015] The advantages of this invention are:

[0016] 1. This invention, through the configuration of a drive assembly, detects the weight of coal lumps accumulated in the feed pipe using a pressure sensor when it is necessary to evenly distribute the crushed coal lumps. When the pressure value detected by the pressure sensor exceeds a preset threshold, the pressure sensor sends a signal to start the motor. The motor, through a drive gear, drive toothed plate, and drive rod, moves the baffle, causing the upper baffle to close the feed pipe and the lower baffle to open the feed pipe. This allows the filled coal lumps to fall onto the top of the first conveyor belt, completing the even distribution of the coal lumps. At this point, the pressure sensor detects that the surface pressure has returned to zero, and thus sends a signal to control the motor to operate in reverse, causing the motor to... The drive gear, drive toothed plate, and drive rod drive the upper baffle to open the feed pipe, and the lower baffle to close the feed pipe, thus starting the replenishment of coal blocks in the feed pipe. This avoids the problem of workers not being able to accurately judge the exact number of coal blocks in the feed pipe, which could lead to workers opening the feed pipe too early or too late. If the feed pipe is opened too early, there will be too few coal blocks in the feed pipe, which can affect the material distribution effect and reduce work efficiency. If the feed pipe is opened too late, coal blocks may overflow from the funnel, polluting the working environment and reducing work efficiency. This improves the accuracy of the equipment, reduces the number of operating steps for workers, and improves work efficiency.

[0017] 2. This invention, by setting up a supplementary component, when evenly distributing coal blocks, uses a drive gear, through a first gear, a second gear, a shaft with a handle, and a rotating rod, to drive the swinging chute towards the feed pipe. This causes the rotating plate to move along the guide groove via a connecting rod, which in turn moves the sliding rod along the guide groove. The connecting rod then agitates the coal blocks at the top of the screen plate, promoting their entry into the hopper for replenishment. This avoids the problem of smaller coal blocks being squeezed and obstructed by larger coal blocks when sliding at the top of the screen plate, causing them to fall into the baffle without passing through the screen openings and resulting in repeated steps and reduced work efficiency. This improves the screening effect of the screen plate, thereby accelerating coal replenishment and increasing work efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0020] Figure 2 This is a schematic cross-sectional view of the drive component of the present invention;

[0021] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 For the present invention Figure 3 Enlarged view of point B in the middle;

[0023] Figure 5 This is a schematic cross-sectional view of the supplementary component of the present invention;

[0024] Figure 6 For the present invention Figure 5 Enlarged view of point C in the middle.

[0025] In the diagram: 1. Base; 2. Fixed support frame; 3. Electric telescopic support frame; 4. Screen plate; 5. Funnel; 6. Feed pipe; 7. Baffle; 8. First conveyor belt; 9. Second conveyor belt; 10. Inclined base plate; 11. Pressure sensor; 12. Drive rod; 13. Drive toothed plate; 14. Drive gear; 15. Motor; 16. Delay chute; 17. First gear; 18. Second gear; 19. Handled shaft; 20. Rotating rod; 21. Rotating plate; 22. Rotating seat; 23. Swinging chute; 24. Connecting rod; 25. Sliding rod; 26. Actuating plate; 27. Guide plate; 28. Guide groove; 29. ​​Barrier plate; 30. Torsion spring shaft. Detailed Implementation

[0026] 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.

[0027] Example 1

[0028] Please see Figure 1-6 As shown, a constant uniform feeder for a coal crusher in a coal conveying system of a thermal power plant includes a base 1; a fixed support frame 2 and an electric telescopic support frame 3 are fixedly installed at the top of the base 1; a screen plate 4 is installed at the top of the fixed support frame 2 and the electric telescopic support frame 3; a funnel 5 is installed at the bottom of the screen plate 4; a feed pipe 6 is fixedly installed at the bottom of the funnel 5; a drive assembly is provided at the bottom of the feed pipe 6; two baffles 7 are slidably installed on one side of the feed pipe 6; a first conveyor belt 8 is installed below the feed pipe 6; and a second conveyor belt 9 is installed below the end of the screen plate 4 near the fixed support frame 2.

[0029] The drive assembly includes an inclined base plate 10 disposed at the bottom end of the feed pipe 6. A pressure sensor 11 is fixedly installed on one side of the bottom end of the inclined base plate 10. A drive rod 12 is fixedly installed on one side of each baffle 7. A drive toothed plate 13 is installed on the periphery of each drive rod 12. A drive gear 14 is meshed on one side of each drive toothed plate 13. A motor 15 is installed on one side of each drive gear 14. A supplementary assembly is disposed on the other side of the drive gear 14. By setting up the drive assembly, when it is necessary to evenly distribute the crushed coal blocks, the pressure sensor 11 detects the weight of the coal blocks accumulated in the feed pipe 6. When the pressure value detected by the pressure sensor 11 exceeds a preset threshold, the pressure sensor 11 sends a signal to start the motor 15. The motor 15 drives the baffle 7 to move through the drive gear 14, drive toothed plate 13 and drive rod 12, so that the upper baffle 7 closes the feed pipe 6 and the lower baffle 7 closes the feed pipe 6. The square baffle 7 opens the feed pipe 6, allowing the filled coal blocks to fall onto the top of the first conveyor belt 8, thus achieving uniform distribution of the coal blocks. At this time, the pressure sensor 11 detects that the surface pressure has returned to zero, thereby sending a signal to control the motor 15 to operate in reverse. The motor 15 drives the upper baffle 7 to open the feed pipe 6 and the lower baffle 7 to close the feed pipe 6 through the drive gear 14, drive tooth plate 13 and drive rod 12, and begins to replenish the coal blocks in the feed pipe 6. This avoids the problem that the operator cannot accurately judge the specific quantity of coal blocks in the feed pipe 6, which could lead to the operator opening the feed pipe 6 too early or too late. If the feed pipe 6 is opened too early, there will be less coal blocks in the feed pipe 6, which may affect the material distribution effect and reduce work efficiency. If the feed pipe 6 is opened too late, coal blocks may overflow from the funnel 5, polluting the working environment and reducing work efficiency. This improves the accuracy of the equipment, reduces the number of operating steps for the operator, and improves work efficiency.

[0030] Please see Figure 2-4As shown, each of the drive toothed plates 13 has a delay groove 16 on the side near the drive rod 12. The drive rod 12 is slidably mounted on the inner wall of the delay groove 16. The distance between the two ends of the delay groove 16 is equal to the distance between the two sides of the inner wall of the feed pipe 6. By opening the delay groove 16, when the coal blocks are evenly distributed, the upper baffle 7 can close the feed pipe 6 first, and the lower baffle 7 can open the feed pipe 6. Similarly, when feeding coal blocks into the feed pipe 6, the lower baffle 7 can close the feed pipe 6 first, and the upper baffle 7 can open the feed pipe 6, thus avoiding the situation where the two baffles are not evenly distributed. When the plates 7 move simultaneously, during the even distribution of coal blocks, the upper baffle 7 has not yet completely closed the feed pipe 6, and the coal blocks begin to fall from below the feed pipe 6, resulting in the actual output being greater than the preset amount, affecting the even distribution of coal blocks. Furthermore, when feeding coal blocks into the feed pipe 6, the lower baffle 7 has not yet completely closed the feed pipe 6, and the coal blocks falling into the feed pipe 6 from the funnel 5 can easily fall directly through the feed pipe 6 onto the top of the first conveyor belt 8, thus affecting the even distribution of coal blocks and consequently affecting the subsequent combustion efficiency. This improves the stability and reliability of the equipment and enhances the even distribution of coal blocks.

[0031] Example 2

[0032] Please see Figure 1-2 , Figure 5-6As shown in the comparison with Embodiment 1, as another embodiment of the present invention, the supplementary component includes a first gear 17 disposed on one side of the drive gear 14, a second gear 18 meshing with one side of the first gear 17, a shaft with a handle 19 fixedly mounted on one side of the second gear 18, a long handle fixedly mounted on one side of the shaft with handle 19, a rotating rod 20 fixedly mounted at one end of the long handle, a rotating plate 21 mounted around the rotating rod 20, a rotating seat 22 rotatably mounted at the bottom end of the rotating plate 21, the rotating seat 22 fixedly mounted at the top end of the base 1, a swing groove 23 formed on one side of the rotating plate 21, the rotating rod 20 slidably mounted on the inner wall of the swing groove 23, a connecting rod 24 rotatably mounted at the top end of the rotating plate 21, a sliding rod 25 rotatably mounted at one end of the connecting rod 24, and a fixed rod 25 at the bottom end of the sliding rod 25. A deflector plate 26, with both ends passing through guide plate 27 and extending to one side of guide plate 27, is provided. By setting up a supplementary assembly, during the even distribution of coal blocks, the drive gear 14, through the first gear 17, the second gear 18, the handle-driven shaft 19, and the rotating rod 20, drives the swing chute 23 to swing towards the feed pipe 6. This causes the rotating plate 21 to move along the guide groove 28 via the connecting rod 24, which in turn drives the sliding rod 25. The connecting rod 24 then deflects the coal blocks at the top of the screen plate 4, promoting their entry into the funnel 5 for supplementation. This avoids the problem that smaller coal blocks are easily squeezed and obstructed by larger ones when sliding at the top of the screen plate 4, causing them to fall into the baffle 7 without passing through the screen openings on the surface of the screen plate 4, resulting in repeated steps and reduced work efficiency. This improves the screening effect of the screen plate 4, thereby accelerating coal replenishment and increasing work efficiency.

[0033] Please see Figure 1-2 , Figure 5-6As shown, each side of the guide plate 27 is provided with a guide groove 28, which includes a shorter portion, a longer portion, and two inclined portions. When evenly distributing coal blocks, the sliding rod 25 moves towards the electric telescopic support frame 3, causing it to move along the inclined and shorter portions of the guide groove 28, increasing the force applied to the coal blocks. When replenishing coal blocks in the feed pipe 6, the sliding rod 25 moves away from the electric telescopic support frame 3, causing it to move along the longer portion of the guide groove 28. This design avoids the sliding rod 25 moving away from the electric telescopic support frame 3 when replenishing coal blocks in the feed pipe 6. The bottom end of the actuating plate 26 easily moves the coal blocks at the top of the screen plate 4 towards the second conveyor belt 9, reducing the residence time of the coal blocks at the top of the screen plate 4. This reduces the probability of coal blocks missing from the screen, thus causing repeated steps and affecting work efficiency. It also reduces the impact of the sliding rod 25 on the coal blocks at the top of the screen plate 4 when resetting, increasing the residence time of the coal blocks at the top of the screen plate 4, thereby increasing the screening effect of the screen plate 4.

[0034] Please see Figure 5-6 As shown, a baffle plate 29 is rotatably mounted at the intersection of the longer portion and the inclined portion of the guide groove 28. One end of the baffle plate 29 near the fixed support frame 2 abuts against the top of the longer portion of the guide groove 28, and one end of the other baffle plate 29 abuts against the bottom of the longer portion of the guide groove 28. A torsion spring shaft 30 is mounted on one end of each baffle plate 29. By setting the baffle plate 29 and the torsion spring shaft 30, the sliding rod 25 can be reset and moved to the intersection of the longer portion and the inclined portion of the guide groove 28. When the sliding rod 25 moves into the inclined part of the guide groove 28, the baffle plate 29 prevents the sliding rod 25 from being moved to a shorter part by gravity along the inclined part of the guide groove 28 when the sliding rod 25 is reset. This allows the agitator plate 26 to move the coal block at the top of the screen plate 4 towards the second conveyor belt 9, reducing the dwell time of the coal block at the top of the screen plate 4 and thus reducing the screening effect of the screen plate 4. This improves the stability and reliability of the equipment and enhances the screening effect of the screen plate 4.

[0035] Please see Figure 1-4As shown, the number of teeth on the outer wall of the drive gear 14 is twice the number of teeth on one side of the drive gear plate 13. During the opening or closing of the feed pipe 6 by the baffle 7, the drive gear 14 rotates half a turn, causing the drive gear 14 to drive the rotating rod 20 to rotate half a turn via the first gear 17, the second gear 18, and the shaft with a handle 19. This causes the rotating plate 21 to swing from one side to the other, allowing the sliding rod 25 to remain at both ends of the longer portion of the guide groove 28. This avoids the problem where, when the number of teeth on the outer wall of the drive gear 14 is not twice the number of teeth on one side of the drive gear plate 13, the sliding rod 25 easily remains on the inclined or shorter inner wall of the guide groove 28. This prevents the agitator plate 26 from obstructing the movement of larger coal blocks at the top of the screen plate 4, thus pushing them to one side and causing movement interference to the normal transport of the equipment. This improves the stability and reliability of the equipment.

[0036] Please see Figure 5-6 As shown, the distance between the top and bottom of the agitator plate 26 is less than the minimum distance between the top of the agitator plate 26 and the top of the screen plate 4. The bottom of the agitator plate 26 is bent. This allows a gap to exist between the bottom of the agitator plate 26 and the top of the screen plate 4. When the agitator plate 26 moves the coal, some coal can continue to slide through the gap. This avoids the problem of a large amount of coal accumulating on one side of the agitator plate 26 and overflowing from the top of the screen plate 4, causing coal pollution and waste, and affecting work efficiency. This improves the stability and reliability of the equipment.

[0037] Please see Figure 5-6 As shown, both ends of the sliding rod 25 are equipped with limiting plates, which abut against one side of the guide plate 27. This limits the movement of the sliding rod 25, preventing it from shifting horizontally during movement and getting stuck when entering the inclined section. At the same time, the sliding rod 25 causes the actuating plate 26 to shift, thus affecting the actuating plate 26's ability to move coal blocks. This improves the stability and reliability of the equipment.

[0038] Working principle: When the coal material is crushed by the coal crusher and needs to be evenly distributed, the coal block is placed at the end of the screen plate 4 near the electric telescopic support frame 3, so that the coal block moves towards the fixed support frame 2 under the action of gravity. At this time, the coal block of suitable size falls into the baffle 7 through the screen opening at the top of the screen plate 4, and the larger coal block moves to the end of the screen plate 4 near the fixed support frame 2 and falls into the top of the second conveyor belt 9, thereby being transported to the coal crusher for secondary crushing.

[0039] When a certain amount of coal is filled into the first conveyor belt 8, the pressure sensor 11 detects that the surface pressure exceeds the preset valve shaft and sends a signal to control the motor 15 to start. The motor 15 drives the drive gear 14 to rotate, which causes the drive gear 14 to drive the top drive tooth plate 13 to move towards the feed pipe 6. The drive tooth plate 13 drives the drive rod 12 to move, and the drive rod 12 drives the baffle 7 to move, so that the baffle 7 moves to the top of the feed pipe 6, preventing coal from falling from the funnel 5 into the feed pipe 6. At the same time, the drive gear 14 drives the bottom drive tooth plate 13 to move away from the feed pipe 6. The drive tooth plate 13 drives the delay chute 16 to move. When the upper baffle 7 moves to the top of the feed pipe 6, one end of the delay chute 16 abuts against the drive rod 12, thereby driving the drive rod 12 to move. The drive rod 12 drives the baffle 7 to move, so that the lower baffle 7 moves to one side of the feed pipe 6, so that the coal in the feed pipe 6 falls onto the surface of the first conveyor belt 8, completing the uniform distribution of coal.

[0040] After a batch of coal blocks is evenly distributed, the pressure sensor 11 detects that the surface pressure has returned to zero and sends a signal to control the motor 15 to start in reverse. The motor 15 drives the drive gear 14 to rotate, which causes the drive gear 14 to drive the drive tooth plate 13 at the bottom to move closer to the feed pipe 6. The drive tooth plate 13 drives the drive rod 12 to move, and the drive rod 12 drives the baffle 7 to move, so that the baffle 7 moves to the bottom of the feed pipe 6 and closes the feed pipe 6. At the same time, the drive gear 14 drives the drive tooth plate 13 at the top to move closer to the feed pipe 6. The drive tooth plate 13 drives the delay chute 16 to move. When the lower baffle 7 moves to the bottom of the feed pipe 6, one end of the delay chute 16 abuts against the drive rod 12, thereby driving the drive rod 12 to move. The drive rod 12 drives the baffle 7 to move, so that the upper baffle 7 moves to one side of the feed pipe 6, so that the coal blocks in the funnel 5 fall into the baffle 7 and the even distribution of a new batch of coal blocks begins.

[0041] When the baffle 7 below the feed pipe 6 is opened to evenly distribute the coal, the drive gear 14 drives the first gear 17 to rotate, the first gear 17 drives the second gear 18 to rotate, the second gear 18 drives the handle-driven shaft 19 to rotate, the handle-driven shaft 19 drives the rotating rod 20 to rotate, the rotating rod 20 drives the rotating plate 21 to swing towards the feed pipe 6 through the swing groove 23, the rotating plate 21 drives the connecting rod 24 to move, the connecting rod 24 drives the sliding rod 25 to move along the guide groove 28, so that the sliding rod 25 moves through the inclined part and the shorter part of the guide groove 28 to the longer end, the sliding rod 25 5 drives the actuating plate 26 to move, causing the actuating plate 26 to agitate the coal blocks at the top of the screen plate 4, promoting the coal blocks to pass through the screen openings on the surface of the screen plate 4 and enter the funnel 5 to replenish the coal blocks. When the baffle 7 below the feed pipe 6 is closed, and the coal blocks are fed into the feed pipe 6, the drive gear 14 drives the rotating plate 21 to swing away from the feed pipe 6 through the first gear 17, the second gear 18, the handle-loaded rotating shaft 19 and the rotating rod 20. The rotating plate 21 drives the sliding rod 25 to move along the guide groove 28 to one end of the longer part of the guide groove 28 through the connecting rod 24, completing the reset and facilitating the next operation.

[0042] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A constant uniform distributor for coal pulverizer of coal handling system of thermal power plant, characterized in that: The utility model provides a kind of automatic feeding device, including base (1);The top of the base (1) is fixedly installed with fixed support frame (2) and electric telescopic support frame (3), the top of fixed support frame (2) and electric telescopic support frame (3) is installed with sieve plate (4), the bottom of sieve plate (4) is installed with hopper (5), the bottom of hopper (5) is fixedly installed with feed pipe (6), the bottom of feed pipe (6) is provided with drive assembly, one side of feed pipe (6) is slidably installed with two baffle (7), the below of feed pipe (6) is installed with first conveying belt (8), the below of sieve plate (4) close to one end of fixed support frame (2) is installed with second conveying belt (9); The drive assembly includes an inclined bottom plate (10) disposed at the bottom end of the feed pipe (6), a pressure sensor (11) fixedly installed on one side of the bottom end of the inclined bottom plate (10), a drive round rod (12) fixedly installed on one side of each baffle (7), a drive gear plate (13) installed on the circumference of each drive round rod (12), a drive gear (14) meshingly installed on one side of each drive gear plate (13), a motor (15) installed on one side of each drive gear (14), and a replenishment assembly provided on the other side of each drive gear (14); The replenishment assembly includes a first gear (17) provided on one side of the drive gear (14), a second gear (18) meshingly installed on one side of the first gear (17), a handle shaft (19) fixedly installed on one side of the second gear (18), a long handle fixedly installed on one side of the handle shaft (19), and a rotating round rod (20) fixedly installed on one end of the long handle; The rotating round rod (20) is installed with a rotating plate (21) on its circumference, the bottom end of the rotating plate (21) is rotatably installed with a rotating seat (22), the rotating seat (22) is fixedly installed on the top end of the base (1), one side of the rotating plate (21) is provided with a swing sliding groove (23), the rotating round rod (20) is slidably installed on the inner wall of the swing sliding groove (23), the top end of the rotating plate (21) is rotatably installed with a connecting rod (24), one end of the connecting rod (24) is rotatably installed with a sliding round rod (25), the bottom end of the sliding round rod (25) is fixedly installed with a push plate (26), both ends of the push plate (26) pass through a guide plate (27) and extend to one side of the guide plate (27); One side of the guide plate (27) is provided with a guide groove (28), the guide groove (28) includes a shorter part, a longer part and two inclined parts; The intersection of the longer part and the inclined part of the guide groove (28) is rotatably installed with a blocking plate (29), one end of the blocking plate (29) close to the fixed support frame (2) abuts against the top end of the longer part of the guide groove (28), one end of the other blocking plate (29) abuts against the bottom end of the longer part of the guide groove (28), and one end of the blocking plate (29) is installed with a torsion spring shaft (30). The distance between the top end and the bottom end of the toggle plate (26) is less than the minimum distance from the top end of the toggle plate (26) to the top end of the sieve plate (4), and the bottom end of the toggle plate (26) is arranged in a bent shape; Both ends of the sliding round rod (25) are provided with limiting round plates, which abut against one side of the guide plate (27).

2. The constant uniform distributor for coal pulverizer of coal handling system of thermal power plant as claimed in claim 1 wherein: The driving tooth plate (13) is provided with a delay sliding groove (16) on one side close to the driving round rod (12), the driving round rod (12) is slidingly installed on the inner wall of the delay sliding groove (16), and the distance between the two ends of the delay sliding groove (16) is equal to the distance between the two sides of the inner wall of the feeding pipe (6).

3. The constant uniform distributor for coal pulverizer of coal handling system of thermal power plant as claimed in claim 1 wherein: The number of tooth blocks arranged on the outer wall of the driving gear (14) is twice the number of tooth blocks on one side of the driving tooth plate (13).

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