Pulverized coal boiler feeding structure

Abstract

The utility model relates to the field of boiler equipment, in particular to a pulverized coal boiler feeding structure. The pulverized coal boiler feeding structure comprises a feeding bin, a fixed grinding disc and a conical stacking bin, a conveying barrel is installed on one side of the feeding bin, a conveying auger is installed in the conveying barrel, a conveying motor is fixedly connected to the top end of the conveying barrel, and the output end of the conveying motor is fixedly connected with the conveying auger. According to the quantitative feeding device, the quantitative block, the quantitative groove, the leakage groove, the feeding hole and other parts are designed to work cooperatively, and accurate quantitative feeding of pulverized coal is achieved. The control over the feeding amount of pulverized coal in the boiler is facilitated, the stability and consistency of combustion are kept, energy waste and environmental pollution are reduced, the pulverized coal is efficiently ground through mutual cooperation of the fixed grinding disc and the rotary grinding disc, the pulverized coal is effectively prevented from caking, the surface area of the pulverized coal is increased, and the combustion efficiency of the pulverized coal is improved. The pulverized coal can be combusted more sufficiently in the boiler, and more heat energy is released.

Description

Technical Field

[0001] The utility model relates to the field of boiler equipment, in particular to a coal powder boiler feeding structure. Background Art

[0002] According to the existing patent with the patent application number: 202222800361.7, a coal powder feeding device for a boiler is disclosed. In this patent, coal powder falls onto the upper end of a pressing plate. As the coal powder continuously accumulates, under the action of gravity, the pressing plate moves downward, driving the spring to move, and then the pressing plate is no longer inside the straight barrel, so that the coal powder falls onto the upper end of the feeding bin. Thus, this device can quantitatively convey the coal powder, making the distribution of the coal powder more uniform and solving the problem of large fluctuations in feeding.

[0003] The existing patent has the following defects:

[0004] 1. Taking ten kilograms as an example, when the coal powder on the pressing plate exceeds ten kilograms, the pressing plate descends. At this time, the coal powder leaks out from the edge of the pressing plate. However, when a little coal powder leaks, the coal powder on the pressing plate is less than ten kilograms, and the pressing plate will rise. At this time, discharging cannot be carried out, and the effect of quantitative feeding cannot be achieved.

[0005] 2. After use, a relatively large amount of coal powder still remains at the end of the pressing plate and cannot be discharged. The remaining coal powder on the pressing plate will cause caking and other situations, resulting in incomplete combustion and even blocking the feeding port.

[0006] Therefore, it is necessary to provide a new coal powder boiler feeding structure to solve the above technical problems. Summary of the Utility Model

[0007] To solve the above technical problems, the utility model provides a coal powder boiler feeding structure.

[0008] The coal powder boiler feeding structure provided by the utility model includes: a feeding bin, a fixed grinding disc, and a conical stacking bin. A conveying cylinder is installed on one side of the feeding bin. A conveying auger is installed inside the conveying cylinder. The top end of the conveying cylinder is fixedly connected with a conveying motor, and the output end of the conveying motor is fixedly connected with the conveying auger. A fixed grinding disc is fixedly connected inside the feeding bin. A through hole is opened at the axis of the fixed grinding disc. The bottom end of the fixed grinding disc is rotatably connected with a rotating grinding disc. The interior of the feeding bin is divided into two conical stacking bins. Leakage grooves are opened inside the two conical stacking bins. A quantitative block is slidably connected inside the bottom end of the feeding bin. Quantitative grooves are symmetrically opened at both ends of the quantitative block.

[0009] Preferably, a support is fixedly connected to the top end of the feeding bin. A transmission shaft is rotatably connected to the middle of the support. A feeding motor is fixedly connected to the top end of the support. One end of the feeding motor is fixedly connected with the transmission shaft. One end of the transmission shaft is fixedly connected with the axis of the rotating grinding disc.

[0010] Preferably, a turntable is fixedly connected to the bottom end of the transmission shaft, a dial post is fixedly connected to the bottom end of the turntable away from the center of the circle, a dial groove is formed in the middle of the metering block, and the dial post is slidably connected to the inner wall of the dial groove.

[0011] Preferably, a receiving cavity is formed in the inner wall of the bottom end of the feeding bin, feeding holes are symmetrically formed in the inner wall of the receiving cavity, the metering block is located in the middle of the receiving cavity, the metering groove coincides with the material leakage groove, the metering block is located on one side of the receiving cavity, and the metering groove coincides with one of the feeding holes.

[0012] Preferably, grinding lines are formed on the mutually approaching sides of the fixed grinding disc and the rotating grinding disc.

[0013] Preferably, a transfer channel is communicated with the top end of the conveying cylinder, a guide pipe is fixedly connected to the top end of the feeding bin, and the transfer channel is communicated with the guide pipe.

[0014] Preferably, a feed hopper is formed at the bottom end of the conveying cylinder.

[0015] Compared with the related art, the coal powder boiler feeding structure provided by the present utility model has the following beneficial effects:

[0016] Improve the combustion efficiency of coal powder: Through the mutual cooperation of the fixed grinding disc and the rotating grinding disc, the coal powder is efficiently ground, effectively preventing the coal powder from caking, increasing the surface area and combustion efficiency of the coal powder, enabling the coal powder to burn more fully in the boiler and releasing more heat energy.

[0017] Realize the quantitative supply of coal powder: The components such as the metering block, metering groove, material leakage groove and feeding hole in the structural design work together to achieve the precise quantitative supply of coal powder. This helps to control the amount of coal powder input into the boiler, maintain the stability and consistency of combustion, and reduce energy waste and environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the coal powder boiler feeding structure provided by the present utility model;

[0019] Figure 2 is Figure 1 the schematic structural diagram of the side view cross-section shown in;

[0020] Figure 3 is Figure 2 the schematic structural diagram of removing the metering block shown in;

[0021] Figure 4 is Figure 2 the schematic structural diagram of the metering block shown in.

[0022] Reference numerals in the figure: 1, feed bin; 2, conveying cylinder; 3, conveying auger; 4, conveying motor; 5, fixed grinding disc; 6, through hole; 7, rotating grinding disc; 8, conical storage bin; 9, material leakage groove; 10, metering block; 11, metering groove; 12, support; 13, transmission shaft; 14, feeding motor; 15, dial post; 16, dial groove; 17, accommodation cavity; 18, feeding hole; 19, transfer channel; 20, guide pipe; 21, feeding hopper; 22, turntable. Specific implementation mode

[0023] In order to make the object, technical solution and advantages of the present utility model clearer, the following further details the present utility model in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0024] The following describes the specific implementation of the present utility model in detail in conjunction with specific embodiments.

[0025] Please refer to Figures 1 to 4 , a coal powder boiler feeding structure, the coal powder boiler feeding structure includes: a feed bin 1, a fixed grinding disc 5 and a conical storage bin 8. A conveying cylinder 2 is installed on one side of the feed bin 1. A conveying auger 3 is installed inside the conveying cylinder 2. The top of the conveying cylinder 2 is fixedly connected with a conveying motor 4. The output end of the conveying motor 4 is fixedly connected with the conveying auger 3. The inside of the feed bin 1 is fixedly connected with a fixed grinding disc 5. A through hole 6 is opened at the center of the fixed grinding disc 5. The bottom end of the fixed grinding disc 5 is rotatably connected with a rotating grinding disc 7. The inside of the feed bin 1 is divided into two conical storage bins 8. A material leakage groove 9 is opened inside the two conical storage bins 8. A metering block 10 is slidably connected inside the bottom end of the feed bin 1. Metering grooves 11 are symmetrically opened at both ends of the metering block 10. Grinding patterns are opened on the sides of the fixed grinding disc 5 and the rotating grinding disc 7 close to each other. The top of the conveying cylinder 2 is connected to a transfer channel 19. A guide pipe 20 is fixedly connected to the top of the feed bin 1. The transfer channel 19 is connected to the guide pipe 20. A feeding hopper 21 is opened at the bottom end of the conveying cylinder 2.

[0026] Please refer to Figures 2 - 4, a support 12 is fixedly connected to the top end of the feeding bin 1. A transmission shaft 13 is rotatably connected to the middle of the support 12. A feeding motor 14 is fixedly connected to the top end of the support 12. One end of the feeding motor 14 is fixedly connected to the transmission shaft 13. One end of the transmission shaft 13 is fixedly connected to the center of the rotary grinding disc 7. A turntable 22 is fixedly connected to the bottom end of the transmission shaft 13. A dial post 15 is fixedly connected to the bottom end of the turntable 22 away from the center. A dial groove 16 is formed in the middle of the metering block 10. The dial post 15 is slidably connected to the inner wall of the dial groove 16. A receiving cavity 17 is formed in the inner wall of the bottom end of the feeding bin 1. Feeding holes 18 are symmetrically formed in the inner wall of the receiving cavity 17. The metering block 10 is located in the middle of the receiving cavity 17. The metering groove 11 coincides with the leakage groove 9. The metering block 10 is located on one side of the receiving cavity 17. The metering groove 11 coincides with one of the feeding holes 18.

[0027] The working principle of the coal powder boiler feeding structure provided by the present utility model is as follows:

[0028] Initial entry of coal powder:

[0029] The coal powder first enters the conveying cylinder 2 through the feeding hopper 21. The feeding hopper 21 is designed at the bottom end of the conveying cylinder 2 to facilitate the smooth entry of the coal powder into the conveying system.

[0030] Coal powder conveying process:

[0031] After the conveying motor 4 is started, it drives the conveying auger 3 to rotate in the conveying cylinder 2. The spiral blades of the conveying auger 3 push the coal powder upward along the conveying cylinder 2 until the coal powder is conveyed to the top end of the conveying cylinder 2 and enters the through-hole 6 area of the fixed grinding disc 5 in the feeding bin 1 through the transfer channel 19 and the guide pipe 20.

[0032] Coal powder grinding stage:

[0033] When the coal powder enters the through-hole 6, at this time, the grinding feeding motor 14 is started, and the feeding motor 14 drives the rotary grinding disc 7 to rotate through the transmission shaft 13.

[0034] Grinding lines are formed on the sides of the fixed grinding disc 5 and the rotary grinding disc 7 that are close to each other. The relative rotational movement between the two efficiently grinds the coal powder, prevents the coal powder from caking, improves the combustion efficiency of the coal powder, and the ground coal powder falls into the conical storage bin 8.

[0035] Coal powder metering supply:

[0036] During the grinding process, the transmission shaft 13 not only drives the rotary grinding disc 7 to rotate, but also interacts with the dial groove 16 of the metering block 10 through the turntable 22 and the dial post 15 at its bottom end to drive the metering block 10 to reciprocate inside the bottom end of the feeding bin 1.

[0037] When the metering block 10 is located in the middle of the accommodating cavity 17, the metering groove 11 coincides with the material leakage groove 9. At this time, the pulverized coal falls from the material leakage groove 9 into the metering groove 11 to form metering.

[0038] With the continuous movement of the metering block 10, when the metering block 10 is located on one side of the accommodating cavity 17, the metering groove 11 coincides with one of the feed holes 18, and the pulverized coal in the metering groove 11 is further conveyed to the boiler or other use positions through the feed hole 18, completing the metered supply of the pulverized coal.

[0039] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A coal powder boiler feeding structure, characterized in that, Comprising: A feeding bin (1), on one side of the feeding bin (1) is installed a conveying cylinder (2), inside the conveying cylinder (2) is installed a conveying auger (3), at the top of the conveying cylinder (2) is fixedly connected a conveying motor (4), and the output end of the conveying motor (4) is fixedly connected to the conveying auger (3); A fixed grinding disc (5), inside the feeding bin (1) is fixedly connected a fixed grinding disc (5), at the axis center of the fixed grinding disc (5) is opened a through hole (6), and at the bottom end of the fixed grinding disc (5) is rotatably connected a rotating grinding disc (7); A conical stockpiling bin (8), the inside of the feeding bin (1) is divided into two conical stockpiling bins (8), inside the two conical stockpiling bins (8) are opened material leakage grooves (9), at the bottom inside of the feeding bin (1) is slidably connected a metering block (10), and at both ends of the metering block (10) are symmetrically opened metering grooves (11).

2. The coal powder boiler feeding structure according to claim 1, characterized in that At the top of the feeding bin (1) is fixedly connected a support (12), in the middle of the support (12) is rotatably connected a transmission shaft (13), at the top of the support (12) is fixedly connected a feeding motor (14), one end of the feeding motor (14) is fixedly connected to the transmission shaft (13), and one end of the transmission shaft (13) is fixedly connected to the axis center of the rotating grinding disc (7).

3. The coal powder boiler feeding structure according to claim 2, characterized in that, At the bottom end of the transmission shaft (13) is fixedly connected a turntable (22), at the bottom end of the turntable (22) away from the center is fixedly connected a dial post (15), in the middle of the metering block (10) is opened a dial groove (16), and the dial post (15) is slidably connected to the inner wall of the dial groove (16).

4. The coal powder boiler feeding structure according to claim 3, characterized in that, At the bottom inner wall of the feeding bin (1) is opened a receiving cavity (17), on the symmetric inner walls of the receiving cavity (17) are opened feeding holes (18), the metering block (10) is located in the middle of the receiving cavity (17), the metering groove (11) coincides with the material leakage groove (9), the metering block (10) is located on one side of the receiving cavity (17), and the metering groove (11) coincides with one of the feeding holes (18).

5. The coal powder boiler feeding structure according to claim 1, characterized in that, On the mutually approaching sides of the fixed grinding disc (5) and the rotating grinding disc (7) are opened grinding lines.

6. The coal powder boiler feeding structure according to claim 1, characterized in that At the top of the conveying cylinder (2) is communicated with a transfer channel (19), at the top of the feeding bin (1) is fixedly connected a guide pipe (20), and the transfer channel (19) is communicated with the guide pipe (20).

7. The coal powder boiler feeding structure according to claim 1, characterized in that, At the bottom of the conveying cylinder (2) is opened a feed hopper (21).

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