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CN-121972473-A - Anti-blocking device of coal dropping pipe

CN121972473ACN 121972473 ACN121972473 ACN 121972473ACN-121972473-A

Abstract

The invention discloses an anti-blocking device of a coal dropping pipe, which comprises a travelling mechanism, wherein the travelling mechanism is used for driving the device to move in the coal dropping pipe, a first platform and a second platform are respectively arranged at two ends of the travelling mechanism, a blocking clearing mechanism is arranged on the first platform, a collecting mechanism is arranged on the second platform, the blocking clearing mechanism comprises a driving piece, a pushing piece and a scraping piece, the pushing piece can push the scraping piece to rotate and spread, the clearing radius of the scraping piece is increased, the clearing angle of the scraping piece is smaller than 90 degrees when the scraping piece works, the clearing angle is an included angle between the scraping piece and a tangent line of a clearing point, and in the working process of the driving piece, the clearing radius of the scraping piece can be increased through rotating and spreading, so that the scraping piece is suitable for pipelines with different pipe diameters.

Inventors

  • LU CHANGYONG
  • ZHANG TIANLU
  • LI GANG
  • XIA JIANLIN
  • GUO ZHONG

Assignees

  • 华能国际电力股份有限公司德州电厂

Dates

Publication Date
20260505
Application Date
20251110

Claims (10)

  1. 1. An anti-blocking device of a coal dropping pipe is characterized by comprising, The traveling mechanism (100) is used for driving the device to move in the coal dropping pipe, and a first platform (200) and a second platform (300) are respectively arranged at two ends of the traveling mechanism (100); the first platform (200) is provided with a blockage removing mechanism (400), and the second platform (300) is provided with a collecting mechanism (500); The blockage cleaning mechanism (400) comprises a driving piece (401), a pushing piece (402) and a scraping piece (403); When the driving piece (401) works, the pushing piece (402) can push the scraper piece (403) to rotate and spread, the cleaning radius of the scraper piece (403) is increased, the scraping angle of the scraper piece (403) is smaller than 90 degrees when the scraper piece works, and the scraping angle is an included angle between the scraper piece (403) and a tangent line of a scraping point.
  2. 2. The anti-blocking device of a coal dropping pipe according to claim 1, wherein the driving piece (401) comprises a driving motor (411) and a rotary table (421), and an output shaft of the driving motor (411) is connected with the rotary table (421); the pushing piece (402) and the scraping piece (403) are both arranged on the turntable (421).
  3. 3. The anti-blocking device for a coal drop pipe according to claim 2, wherein the pushing member (402) comprises an anchor post (412) fixed on a turntable (421) and a pushing block (422) movably mounted on the anchor post (412), and when the turntable (421) rotates, centrifugal force can drive the pushing block (422) to move away from the center of the turntable (421) so as to push the scraper member (403).
  4. 4. The anti-blocking device for a coal dropping pipe according to claim 3, wherein the scraper member (403) comprises a swinging rod (413) with an end connected with the turntable (421), and a scraping blade (423) mounted on the swinging rod (413), and the pushing block (422) can push the swinging rod (413) to rotate when moving away from the center of the turntable (421).
  5. 5. The anti-blocking device for a coal drop pipe according to claim 4, wherein the swing rod (413) is provided with a through groove (433), and the anchor post (412) penetrates through the swing rod (413) through the through groove (433).
  6. 6. The anti-blocking device for a coal drop pipe according to claim 4, wherein the anchor post (412) is further provided with a limiting plate (432), and the limiting plate (432) can limit the rotation angle of the swing rod (413).
  7. 7. The anti-blocking device of a coal drop pipe according to claim 1, 5 or 6, wherein the collecting mechanism (500) comprises a negative pressure mechanism (501) and a collecting cabin (502) connected with the negative pressure mechanism (501), and a collecting opening (503) is arranged on the collecting cabin.
  8. 8. The anti-blocking device for a coal drop pipe according to claim 7, wherein the collecting chamber (502) is provided with a storage cavity (512), and a filtering structure (504) is installed between the storage cavity (512) and the negative pressure mechanism (501).
  9. 9. The anti-blocking device for a coal drop pipe according to claim 1, 5 or 6, wherein the traveling mechanism (100) comprises a base (101), a cylinder (102) mounted on the base (101), and a traveling member (103) connected to the cylinder (102).
  10. 10. The anti-blocking device for a coal chute according to claim 9, wherein the traveling member (103) comprises a mounting plate (113) connected to a telescopic column of the cylinder (102), and a roller (123) rotatably mounted on the mounting plate (113).

Description

Anti-blocking device of coal dropping pipe Technical Field The invention relates to the field of blocking prevention, in particular to a blocking prevention device of a coal dropping pipe. Background The key reasons of the blockage of the coal dropping pipe are material characteristics, equipment design defects and improper operation management, and the problems of prevention and dredging are systematically solved. From the reasons, the problems of material characteristics are that coal dust is adhered to a pipe wall and gradually thickened and blocked due to the fact that the humidity of coal exceeds the standard, large-block impurities are mixed in the coal and are easy to clamp at a pipe diameter narrowing position or an elbow position, fine powder and coarse particles are layered due to uneven granularity of the coal, the fine powder is easy to form bridging and blocking, equipment design defects comprise that the pipe diameter of a coal dropping pipe is smaller or the inner wall is not smooth, material flow resistance is increased, material gravity cannot overcome due to insufficient inclination angle of a pipeline, initial adhesion cannot be removed in time due to the fact that a blocking removing device is not arranged, improper operation management is represented by that the feeding amount suddenly exceeds the pipeline conveying capacity due to the fact that residual materials are wetted and hard-formed due to the fact that the pipeline is not emptied before shutdown, and initial adhesion hidden danger is ignored by the inner wall of the pipeline is not checked periodically. In the prior art, the coal dropping pipe is cleaned by manually controlling the cleaning device to enter the coal dropping pipe, and the walking and automatic cleaning in the pipeline are not realized. Disclosure of Invention Therefore, the invention aims to solve the technical problem that the automatic cleaning cannot be realized. The invention provides an anti-blocking device of a coal dropping pipe, which comprises a travelling mechanism, wherein the travelling mechanism is used for driving the device to move in the coal dropping pipe, and two ends of the travelling mechanism are respectively provided with a first platform and a second platform; The first platform is provided with a blockage removing mechanism, and the second platform is provided with a collecting mechanism; the blockage cleaning mechanism comprises a driving piece, a pushing piece and a scraping piece; When the driving piece works, the pushing piece can push the scraper piece to rotate and spread, the cleaning radius of the scraper piece is increased, the scraping angle of the scraper piece during working is smaller than 90 degrees, and the scraping angle is an included angle between the scraper piece and a tangent line of a scraping point. In a preferred embodiment of the anti-blocking device of the coal dropping pipe, the driving piece comprises a driving motor and a rotary table, and an output shaft of the driving motor is connected with the rotary table; The pushing piece and the scraping piece are both arranged on the turntable. In an optimal implementation mode of the anti-blocking device of the coal dropping pipe, the pushing piece comprises an anchor post fixed on the rotary table and a pushing piece movably mounted on the anchor post, and when the rotary table rotates, centrifugal force can drive the pushing piece to move away from the center of the rotary table so as to push the scraping piece. In a preferred embodiment of the anti-blocking device of the coal dropping pipe, the scraping plate piece comprises a swinging rod with the end part connected with the rotary table and a scraping blade arranged on the swinging rod, and the pushing block can push the swinging rod to rotate when moving away from the center of the rotary table. In a preferred embodiment of the anti-blocking device of the coal dropping pipe, the swing rod is provided with a through groove, and the anchor post penetrates through the swing rod through the through groove. In an optimal implementation mode of the anti-blocking device of the coal dropping pipe, the anchor post is further provided with a limiting plate, and the limiting plate can limit the rotation angle of the swing rod. In a preferred embodiment of the anti-blocking device of the coal dropping pipe, the collecting mechanism comprises a negative pressure mechanism and a collecting cabin connected with the negative pressure mechanism, and a collecting opening is arranged on the collecting cabin. In a preferred embodiment of the anti-blocking device of the coal dropping pipe, the collecting cabin is provided with a storage cavity, and a filtering structure is arranged between the storage cavity and the negative pressure mechanism. In a preferred embodiment of the anti-blocking device for the coal dropping pipe, the traveling mechanism comprises a base, a cylinder arranged on the base and a traveling piece connected wi