A coal powder distributor

Abstract

The utility model discloses a coal powder distributor, which relates to the technical field of distributors, and includes a distribution barrel, an input pipe, an output pipe, a sealing cover, a motor, a rotating shaft and a scraper. One end of the input pipe is connected to the side wall of the distribution barrel in a circumferential array, the sealing cover is installed at one end of the distribution barrel, one end of the output pipe is connected to the other end of the distribution barrel, the motor is installed on the sealing cover, and the axis of the output end of the motor is perpendicular to the center of the sealing cover. One end of the rotating shaft is connected to the output end of the motor, the rotating shaft passes through the sealing cover and enters the inside of the distribution barrel, the scraper is installed on the rotating shaft, and the scraper is fitted with the inner wall of the distribution barrel. The utility model overcomes the defects of the existing coal powder distributor that during use, the coal powder will adhere to the inner wall of the coal powder distributor due to electrostatic friction, resulting in waste of coal powder and errors in the amount of coal powder distribution.

Description

Technical Field

[0001] The utility model belongs to the technical field of distributors, and particularly relates to a coal powder distributor. Background Art

[0002] Limestone burning is the process of decomposing calcium carbonate in limestone into calcium oxide and carbon dioxide through high-temperature calcination, thereby obtaining quicklime. This process mainly occurs in the lime kiln, where limestone and coal powder are loaded into the lime kiln. After preheating in the preheating zone, when the temperature reaches 850°C, the limestone begins to decompose and calcination is completed at 1200°C. The calcined lime is cooled in the cooling zone and finally discharged from the kiln, completing the production of quicklime products.

[0003] In the process of loading coal powder into the lime kiln, a coal powder distributor is used. The coal powder distributor can evenly distribute the coal powder and air volume passing through the pipeline, so that the coal powder can be fully and stably burned. However, during the use of the existing coal powder distributor, part of the coal powder will be adsorbed to the inner wall of the coal powder distributor due to friction static electricity. This not only leads to the waste of coal powder, but also causes errors in coal powder distribution, affecting the effect of the subsequent limestone calcination process.

[0004] Therefore, a pulverized coal distributor is needed. Utility Model Content

[0005] The purpose of the utility model is to provide a coal powder distributor, so as to overcome the defect of the existing coal powder distributor that the coal powder adheres to the inner wall of the coal powder distributor due to static friction during use. The specific technical solution is as follows:

[0006] A pulverized coal distributor comprises a distribution barrel, an input pipe, an output pipe, a sealing cover, a motor, a rotating shaft and a scraper, wherein one end of the input pipe is connected to the side wall of the distribution barrel in a circular array, the sealing cover is installed at one end of the distribution barrel, one end of the output pipe is connected to the other end of the distribution barrel, the motor is installed on the sealing cover, and the axis of the output end of the motor is perpendicular to the center of the sealing cover, one end of the rotating shaft is connected to the output end of the motor, the rotating shaft passes through the sealing cover and enters the interior of the distribution barrel, the scraper is installed on the rotating shaft, and the scraper is in contact with the inner wall of the distribution barrel.

[0007] Preferably, a cylinder is installed on the side of the sealing cover away from the distribution cylinder, the motor is installed on the cylinder, the side wall of the cylinder is connected to one end of the air pipe, the rotating shaft passes through the interior of the cylinder, the rotating shaft and both ends of the cylinder are mechanically sealed, an air inlet is provided on the side wall of the rotating shaft located inside the cylinder, an air duct is provided in the rotating shaft, the air inlet is connected to the air duct, and an array of air outlet holes is provided on the outer wall of the rotating shaft close to the scraper.

[0008] Preferably, the opening of the air outlet hole faces the side wall of the scraper, and the opening of the air outlet hole is in a flat bell-mouth shape.

[0009] Preferably, the rotating shaft is in a broken line shape, and is divided into a transmission part and a mounting part, the mounting part is equipped with the scraper, the transmission part is used to transmit the motor torque, and the transmission part path is always close to the inner wall of the distribution barrel.

[0010] Preferably, the scraper is made of rubber material.

[0011] Preferably, a limiting ring is installed on one end of the inner wall of the distribution cylinder close to the output pipe, a slide groove is provided on one side of the limiting ring close to the output pipe, a slider is installed on one end of the rotating shaft close to the limiting ring, and the slider is slidably installed in the slide groove.

[0012] Preferably, an inclined surface is provided on a side of the limiting ring close to the motor, and a lower end of the inclined surface is located in a direction away from the inner side wall of the distribution cylinder.

[0013] Compared with the existing technology, the utility model has the following beneficial effects:

[0014] 1. Each time the input pipe inputs the coal powder into the distribution cylinder and then the coal powder is discharged from the output end, the motor starts to drive the scraper to scrape off the coal powder attached to the inner wall of the distributor. The scraped coal powder will be output from the output pipe to the same position, reducing the residual coal powder in the distribution cylinder after each distribution of coal powder, improving the utilization rate of coal powder and reducing the error of coal powder distribution.

[0015] 2. The utility model opens an air passage in the rotating shaft and an air outlet on the mounting portion. When the scraper scrapes the coal powder on the inner wall of the distribution cylinder, the air jet holes simultaneously spray gas, and the gas flows along the scraper and hits the inner wall of the distribution cylinder, further removing the coal powder attached to the inner wall of the distribution cylinder. At the same time, the gas can prevent the scraped coal powder from being squeezed and agglomerated, thereby ensuring that the coal powder can be fully burned in the subsequent process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following will briefly introduce the drawings required for the description of the embodiment. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a front sectional view of the utility model.

[0019] Figure 3yes Figure 2 A partial enlarged view of point A in the middle.

[0020] Figure 4 yes Figure 2 Middle BB section view.

[0021] Figure 5 yes Figure 2 A partial enlarged view of point C in the middle.

[0022] Description of main reference numerals:

[0023] 1. Distribution cylinder; 2. Input pipe; 3. Output pipe; 4. Sealing cover; 5. Motor; 6. Rotating shaft; 601. Transmission part; 602. Mounting part; 7. Scraper; 8. Cylinder; 9. Air pipe; 10. Air inlet; 11. Airway; 12. Air outlet; 13. Limiting ring; 14. Slide groove; 15. Sliding block; 16. Inclined surface. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example, reference Figures 1 to 5 .

[0026] A coal powder distributor comprises a distribution barrel 1, an input pipe 2, an output pipe 3, a sealing cover 4, a motor 5, a rotating shaft 6 and a scraper 7. One end of the input pipe 2 is connected to the side wall of the distribution barrel 1 in a circumferential array, the sealing cover 4 is installed at one end of the distribution barrel 1, one end of the output pipe 3 is connected to the other end of the distribution barrel 1, the motor 5 is installed on the sealing cover 4, and the axis of the output end of the motor 5 is perpendicular to the center of the sealing cover 4, one end of the rotating shaft 6 is connected to the output end of the motor 5, the rotating shaft 6 passes through the sealing cover 4 and enters the inside of the distribution barrel 1, and the scraper 7 is installed on the rotating shaft 6, and the scraper 7 is in contact with the inner wall of the distribution barrel 1. Each time the input pipe 2 inputs the coal powder into the distribution barrel 1 and then the coal powder is discharged from the output end, the motor 5 is started to drive the scraper 7 to scrape off the coal powder attached to the inner wall of the distributor, and the scraped coal powder will be output from the output pipe 3 to the same position, thereby reducing the residual coal powder in the distribution barrel 1 after each distribution of coal powder, improving the utilization rate of coal powder and reducing the error of coal powder distribution.

[0027] A cylinder 8 is installed on the side of the sealing cover 4 away from the distribution cylinder 1, and the motor 5 is installed on the cylinder 8. One end of the air pipe 9 is connected to the side wall of the cylinder 8. The rotating shaft 6 passes through the inside of the cylinder 8. The rotating shaft 6 and the two ends of the cylinder 8 are mechanically sealed. An air inlet 10 is opened on the side wall of the rotating shaft 6 located inside the cylinder 8. An air duct 11 is opened in the rotating shaft 6. The air inlet 10 is connected to the air duct 11. An array of air outlet holes 12 are opened on the outer wall of the rotating shaft 6 close to the scraper 7. The opening of the air outlet hole 12 faces the side wall of the scraper 7, and the opening of the air outlet hole 12 is in the shape of a flat bell mouth. When the motor 5 is started, the gas pipe 9 transports gas to the inside of the cylinder 8, the gas will enter the air duct 11 from the air inlet 10, and finally be ejected from the jet hole. The gas will hit the side wall of the scraper 7, then move along the side wall of the scraper 7 and finally hit the inner wall of the distribution tube 1, further removing the coal powder attached to the inner wall of the distribution tube 1. At the same time, the gas can prevent the scraped coal powder from being squeezed and agglomerated, ensuring that the coal powder can be fully burned in the subsequent process.

[0028] Since the air inlet 10 is always inside the cylinder 8, and both ends of the cylinder 8 are mechanically sealed with the rotating shaft 6, the rotation of the rotating shaft 6 will not affect the gas entering the air passage 11, and there will be no leakage problem. The flat trumpet-shaped air outlet 12 openings can make it possible for the air outlet 12 to be arranged in an array, but the coverage of each air outlet 12 can be staggered to ensure that the entire scraper 7 is sprayed.

[0029] The rotating shaft 6 is in a broken line shape, and the rotating shaft 6 is divided into a transmission part 601 and a mounting part 602. The mounting part 602 is equipped with a scraper 7. The transmission part 601 is used to transmit the torque of the motor 5. The path of the transmission part 601 is always close to the inner wall of the distribution cylinder 1. The broken line rotating shaft 6 can prevent the rotating shaft 6 from always being at the inner axis of the distribution cylinder 1. When the rotating shaft 6 is always at the inner axis of the distribution cylinder 1, the coal powder and gas entering from the input pipe 2 will collide with the rotating shaft 6, affecting the mixing effect of the coal powder and the gas, which may cause the coal powder to fail to burn quickly and fully. The broken line rotating shaft 6 can well avoid this situation.

[0030] The scraper 7 is made of rubber material, and the hardness of the rubber material is lower than the metal material of the distribution tube 1, so it will not scratch the inside of the distribution tube 1. At the same time, the scraper 7 made of rubber has a certain rigidity and will not deform during the process of scraping coal powder, resulting in a poor cleaning effect of the scraper 7.

[0031] A limiting ring 13 is installed on the inner side wall of the distribution barrel 1 at one end near the output pipe 3, and a chute 14 is provided on the side of the limiting ring 13 near the output pipe 3. A slider 15 is installed on the end of the rotating shaft 6 near the limiting ring 13, and the slider 15 is slidably installed in the chute 14. The limiting ring 13 is used to prevent the rotating shaft 6 from deforming due to flexibility, which causes the scraper 7 to be unable to scrape the coal powder near the end of the output pipe 3 in the distribution barrel 1. When the motor 5 is started, the slider 15 will rotate with the rotating shaft 6 in the chute 14, and the chute 14 is set downward to prevent the coal powder from accumulating in the chute 14 and causing blockage.

[0032] The side of the limiting ring 13 close to the motor 5 is provided with an inclined surface 16, and the lower end of the inclined surface 16 is located in the direction away from the inner wall of the distribution tube 1. The coal powder that can be scraped off by the inclined surface 16 is accumulated on the limiting ring 13 and causes waste. At the same time, the gas ejected from the gas outlet 12 close to the limiting ring 13 will flow toward the inclined surface 16 along the inner wall of the distribution tube 1, thereby blowing the coal powder remaining on the inclined surface 16 into the output pipe 3.

[0033] The foregoing descriptions of specific exemplary embodiments of the present invention are for the purpose of explanation and illustration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can make modifications, substitutions, variations and various selections and changes to the embodiments without creative contribution as needed after reading this specification without departing from the principles and purpose of the present invention, but they are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A pulverized coal distributor, characterized in that: The invention comprises a distribution barrel (1), an input pipe (2), an output pipe (3), a sealing cover (4), a motor (5), a rotating shaft (6) and a scraper (7), wherein one end of the input pipe (2) is connected to the side wall of the distribution barrel (1) in a circular array, the sealing cover (4) is installed on one end of the distribution barrel (1), one end of the output pipe (3) is connected to the other end of the distribution barrel (1), the motor (5) is installed on the sealing cover (4), and the axis of the output end of the motor (5) is perpendicular to the center of the sealing cover (4), one end of the rotating shaft (6) is connected to the output end of the motor (5), the rotating shaft (6) passes through the sealing cover (4) and enters the interior of the distribution barrel (1), and the scraper (7) is installed on the rotating shaft (6), and the scraper (7) is in contact with the inner wall of the distribution barrel (1).

2. A pulverized coal distributor according to claim 1, characterized in that: A cylinder (8) is installed on the side of the sealing cover (4) away from the distribution cylinder (1), the motor (5) is installed on the cylinder (8), the side wall of the cylinder (8) is connected to one end of the air supply pipe (9), the rotating shaft (6) passes through the inside of the cylinder (8), the rotating shaft (6) and the two ends of the cylinder (8) are mechanically sealed, an air inlet (10) is opened on the side wall of the rotating shaft (6) located inside the cylinder (8), an air duct (11) is opened in the rotating shaft (6), the air inlet (10) is connected to the air duct (11), and an array of air outlet holes (12) are opened on the outer wall of the rotating shaft (6) close to the scraper (7).

3. A pulverized coal distributor according to claim 2, characterized in that: The opening of the air outlet hole (12) faces the side wall of the scraper (7), and the opening of the air outlet hole (12) is in the shape of a flat bell mouth.

4. A pulverized coal distributor according to claim 1, characterized in that: The rotating shaft (6) is in the shape of a broken line, and is divided into a transmission part (601) and a mounting part (602), the mounting part (602) being mounted with the scraper (7), the transmission part (601) being used to transmit the torque of the motor (5), and the path of the transmission part (601) is always close to the inner wall of the distribution barrel (1).

5. A pulverized coal distributor according to claim 1, characterized in that: The scraper (7) is made of rubber material.

6. A pulverized coal distributor according to claim 1, characterized in that: A limiting ring (13) is installed on one end of the inner wall of the distribution cylinder (1) close to the output pipe (3); a sliding groove (14) is provided on one side of the limiting ring (13) close to the output pipe (3); a sliding block (15) is installed on one end of the rotating shaft (6) close to the limiting ring (13); and the sliding block (15) is slidably installed in the sliding groove (14).

7. A pulverized coal distributor according to claim 6, characterized in that: An inclined surface (16) is provided on a side of the limiting ring (13) close to the motor (5), and a lower end of the inclined surface (16) is located in a direction away from the inner side wall of the distribution barrel (1).

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