Search

CN-224226228-U - Blanking pipe

CN224226228UCN 224226228 UCN224226228 UCN 224226228UCN-224226228-U

Abstract

The utility model discloses a blanking pipe, wherein a first deflector, a second deflector, a third deflector and a fourth deflector which are inclined and parallel to each other are arranged on the inner side of the pipe wall of the blanking pipe. According to the utility model, the guide plates are arranged in the blanking pipe, so that the fire coal is shunted to different areas to fall under the action of the guide plates and is finally uniformly distributed in the raw coal bin, the maximum coal stacking amount of the raw coal bin can be improved, the efficiency of a coal conveying system is improved, and the workload of operation and maintenance personnel is reduced.

Inventors

  • XIANG JING
  • BAI YUNFEI
  • SHU QIAN
  • WANG XIAO

Assignees

  • 中国电力工程顾问集团中南电力设计院有限公司

Dates

Publication Date
20260512
Application Date
20250516

Claims (9)

  1. 1. The blanking pipe is characterized by comprising a blanking pipe body (1), wherein a first deflector (2), a second deflector (3), a third deflector (4) and a fourth deflector (5) which are inclined and parallel to each other are arranged on the inner side of the blanking pipe body (1), the top of the first deflector (2) is located at 1/2 of a feed inlet caliber (L), the top of the second deflector (3) is located at 1/4 of the feed inlet caliber (L), the top of the third deflector (4) is located at 1/8 of the feed inlet caliber (L), the top of the fourth deflector (5) is located at 1/16 of the feed inlet caliber (L), and the top of the first deflector (2), the top of the second deflector (3), the top of the third deflector (4) and the top of the fourth deflector (5) are located at a material concentration side, and the lowest point of the top of the first deflector is far away from the material concentration side.
  2. 2. A blanking pipe as claimed in claim 1, characterized in that the apexes of the first deflector (2) and the second deflector (3) are located at the upper part 1/3 of the whole height of the blanking pipe, the apexes of the third deflector (4) are located at the upper part 1/2 of the whole height of the blanking pipe, the apexes of the fourth deflector (5) are located at the lower part 1/3 of the whole height of the blanking pipe, and the lowest points of the first deflector (2), the second deflector (3), the third deflector (4) and the fourth deflector (5) are located at the lower part 1/10 of the whole height of the blanking pipe.
  3. 3. The blanking pipe as claimed in claim 1, wherein the first deflector (2), the second deflector (3), the third deflector (4) and the fourth deflector (5) are inclined at an angle of 40-60 ° to the horizontal.
  4. 4. A blanking pipe as claimed in claim 3, characterized in that the first deflector (2), the second deflector (3), the third deflector (4) and the fourth deflector (5) are each at an angle of 55 ° to the horizontal.
  5. 5. The blanking pipe of claim 1, wherein the first deflector (2), the second deflector (3), the third deflector (4) and the fourth deflector (5) are all angle steel, and are fixed with the blanking pipe body (1) through welding.
  6. 6. The blanking pipe of claim 5, wherein the first deflector (2), the second deflector (3), the third deflector (4) and the fourth deflector (5) have the same structure, and each of the first deflector and the second deflector is symmetrically arranged on two opposite sides of the inner wall of the blanking pipe body (1), and a gap for blanking and dropping is arranged between the first deflector and the second deflector.
  7. 7. The blanking pipe as claimed in claim 1, characterized in that at least one reinforcing bracket is arranged outside the blanking pipe body (1).
  8. 8. The blanking pipe as claimed in claim 7, wherein the first reinforcing support (6), the second reinforcing support (7) and the third reinforcing support (8) are sequentially arranged on the outer side of the blanking pipe body (1) from top to bottom, the first reinforcing support (6), the second reinforcing support (7) and the third reinforcing support (8) are all horizontal, and the horizontal heights are all located in the height range of the arrangement area of the first guide plate (2).
  9. 9. A blanking pipe as claimed in claim 8, characterized in that the level of the second reinforcing brackets (7) is kept in line with the level of the midpoint of the first deflector (2).

Description

Blanking pipe Technical Field The utility model relates to the technical field of coal-fired unloading, in particular to a blanking pipe. Background In a coal bunker bay of a coal-fired power plant, a plow discharger is usually adopted for discharging a belt conveyor. When the fire coal is discharged into the blanking pipe through the coulter, the fire coal is usually concentrated on one side of the blanking pipe due to forward inertia in the discharging process of the fire coal, and the fire coal concentrated on one side falls into the raw coal bin to cause uneven coal stacking of the raw coal bin, so that the maximum coal stacking amount of the raw coal bin is influenced, the efficiency of a coal conveying system is reduced, and the workload of operation and maintenance staff is improved. Disclosure of utility model The utility model aims to overcome the defects in the prior art, and provides a blanking pipe, wherein a deflector is arranged at a specific position in the blanking pipe, so that coal can be uniformly distributed in a raw coal bin after passing through the blanking pipe. In order to achieve the above purpose, the blanking pipe provided by the utility model adopts the following technical scheme: The blanking pipe comprises a blanking pipe body, wherein a first deflector, a second deflector, a third deflector and a fourth deflector which are inclined and parallel to each other are arranged on the inner side of the blanking pipe body, the vertex of the first deflector is located at 1/2 of the caliber (L) of a feeding hole, the vertex of the second deflector is located at 1/4 of the caliber (L) of the feeding hole, the vertex of the third deflector is located at 1/8 of the caliber (L) of the feeding hole, the vertex of the fourth deflector is located at 1/16 of the caliber (L) of the feeding hole, and the vertexes of the first deflector, the second deflector, the third deflector and the fourth deflector are all located on the material concentration side, and the lowest point of the vertexes of the first deflector, the second deflector, the third deflector and the fourth deflector are all far away from the material concentration side. By adopting the technical scheme, when the fire coal is discharged into the blanking pipe, the fire coal is shunted to different areas to fall under the action of each guide plate, and finally the aim of evenly distributing the fire coal in the raw coal bin is achieved. Preferably, the vertexes of the first deflector and the second deflector are positioned at the 1/3 position of the upper part of the whole height of the blanking pipe, the vertex of the third deflector is positioned at the 1/2 position of the whole height of the blanking pipe, the vertex of the fourth deflector is positioned at the 1/3 position of the lower part of the whole height of the blanking pipe, and the lowest points of the first deflector, the second deflector, the third deflector and the fourth deflector are positioned at the 1/10 position of the lower part of the whole height of the blanking pipe. By adopting the technical scheme, the coal is not easy to be piled up at the feeding port when being discharged into the blanking pipe, and the distribution is more uniform after falling into the raw coal bin. Preferably, the included angles of the first guide plate, the second guide plate, the third guide plate and the fourth guide plate and the horizontal plane are all 40-60 degrees. By adopting the technical scheme, the coal can slide smoothly along the guide plate. Preferably, the included angles of the first guide plate, the second guide plate, the third guide plate and the fourth guide plate and the horizontal plane are all 55 degrees. Preferably, the first guide plate, the second guide plate, the third guide plate and the fourth guide plate are all angle steel, and are fixed with the blanking pipe body through welding. By adopting the technical scheme, the installation of the guide plate is more convenient and stable. Preferably, the first guide plate, the second guide plate, the third guide plate and the fourth guide plate have the same structure and comprise a first guide part and a second guide part which are symmetrically arranged on two opposite sides of the inner wall of the blanking pipe body, and a gap for blanking falling is arranged between the first guide part and the second guide part. Through adopting this technical scheme, some blanking can follow the clearance whereabouts when fire coal unloads in the blanking pipe for fire coal whereabouts is more smooth and easy, and it is more even to distribute after the raw coal storehouse to fall. Preferably, at least one reinforcing bracket is arranged on the outer side of the blanking pipe body. By adopting the technical scheme, the structural strength of the blanking pipe can be enhanced. Preferably, the outside of the blanking pipe body is provided with a first reinforcing support, a second reinforcing support and a third reinforcin