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CN-224230045-U - Pulverized coal conveying system

CN224230045UCN 224230045 UCN224230045 UCN 224230045UCN-224230045-U

Abstract

The utility model relates to the field of combustion systems, and particularly discloses a pulverized coal conveying system, which comprises a combustion furnace, a crusher and a circulating ventilation system, wherein a conveying pipe is arranged between the crusher and the combustion furnace and is communicated with the crusher and the combustion furnace, the circulating ventilation system comprises an air inlet pipe, an air outlet pipe and a dust removal fan, an air inlet of the air inlet pipe is communicated with an external space after passing through the combustion furnace, an air outlet of the air inlet pipe is communicated with an air inlet of the dust removal fan, an air outlet of the dust removal fan is communicated with an air inlet of the air outlet pipe, and an air outlet of the air outlet pipe is communicated with the conveying pipe. According to the utility model, the circulating ventilation system is arranged, the air of the air inlet pipe is heated by the combustion furnace and then flows to the conveying pipe, so that the pulverized coal in the conveying pipe is activated, the accumulation of the pulverized coal in the pipeline is avoided, the fuel is heated, the combustion efficiency of the fuel after entering the combustion furnace is improved, and the utilization rate of the fuel is integrally improved.

Inventors

  • YE PENG
  • LONG YUN
  • JING MINGYANG
  • CHEN CHENG

Assignees

  • 广东一凡自动化设备有限公司

Dates

Publication Date
20260512
Application Date
20250529

Claims (8)

  1. 1. The coal dust conveying system is characterized by comprising a combustion furnace (1), a crusher (2) and a circulating ventilation system (3), wherein a conveying pipe (21) is arranged between the crusher (2) and the combustion furnace (1), the conveying pipe (21) is communicated with the crusher (2) and the combustion furnace (1), the circulating ventilation system (3) comprises an air inlet pipe (31), an air outlet pipe (33) and a dust removal fan (34), an air inlet of the air inlet pipe (31) is communicated with an external space after passing through the combustion furnace (1), an air outlet of the air inlet pipe (31) is communicated with an air inlet of the dust removal fan (34), and an air outlet of the dust removal fan (34) is communicated with an air inlet of the air outlet pipe (33), and an air outlet of the air outlet pipe (33) is communicated with the conveying pipe (21).
  2. 2. The pulverized coal conveying system according to claim 1, characterized in that the discharge port of the conveying pipe (21) is provided with a plurality of distributing pipes (22), the feed inlet of the distributing pipe (22) is communicated with the conveying pipe (21), and the discharge ports of the distributing pipes (22) are uniformly distributed at the bottom of the combustion furnace (1).
  3. 3. The pulverized coal conveying system according to claim 1, characterized in that the air inlet pipe (31) is provided with dust removing openings (311), a plurality of dust removing openings (311) are arranged on the side wall of the air inlet pipe (31), and dust removing ventilation valves are arranged between the dust removing openings (311) and the air inlet pipe (31).
  4. 4. Pulverized coal conveying system according to claim 1, characterized in that the air outlet of the air inlet pipe (31) is provided with an air inlet ventilation valve.
  5. 5. Pulverized coal conveying system according to claim 1, characterized in that the number of crushers (2) is provided in number, the number of feed pipes (21) being arranged in correspondence with the number of crushers (2).
  6. 6. The pulverized coal conveying system according to claim 5, characterized in that the circulating ventilation system (3) comprises a branch air pipe (32), an air inlet pipe (31) of the branch air pipe (32) is communicated with air outlets of a dust removing fan (34), the branch air pipe (32) is provided with air outlets which are arranged corresponding to the number of the air outlet pipes (33), and an air inlet of the air outlet pipe (33) is communicated with one of the air outlets of the branch air pipe (32).
  7. 7. Pulverized coal conveying system according to claim 1, characterized in that the crusher (2) is arranged higher than the burner (1), and that the feed conveyor pipe (21) is arranged obliquely downwards from the crusher (2) to the burner (1).
  8. 8. Pulverized coal conveying system according to claim 1, characterized in that a cleaning pulse valve (23) is arranged between the crusher (2) and the feed conveyor pipe (21).

Description

Pulverized coal conveying system Technical Field The present utility model relates to the field of combustion systems, and in particular to fuel delivery systems. Background Coal is one of the common combustible fuels, the power plant boiler requires fine coal dust for combustion, and the coal blocks are required to be ground into powder before being put into use so as to improve the combustion efficiency. At present, coal powder is uniformly collected and put into a fuel tank for storage after being crushed by a crusher, and finally is fed to a combustion furnace through the storage tank, so that the feeding efficiency of the coal powder is lower. And part of heat in the combustion furnace can be dispersed in the air, so that the heat is difficult to recycle, and the utilization rate of energy sources is reduced. The application aims to solve the technical problem of how to improve the fuel feeding efficiency. Disclosure of Invention In order to overcome the defects in the prior art, the utility model aims to provide a coal dust conveying system. The coal dust conveying system comprises a combustion furnace, a crusher and a circulating ventilation system, wherein a conveying pipe is arranged between the crusher and the combustion furnace and is communicated with the crusher and the combustion furnace, the circulating ventilation system comprises an air inlet pipe, an air outlet pipe and a dust removing fan, an air inlet of the air inlet pipe is communicated with an external space after passing through the combustion furnace, an air outlet of the air inlet pipe is communicated with an air inlet of the dust removing fan, an air outlet of the dust removing fan is communicated with an air inlet of the air outlet pipe, and an air outlet of the air outlet pipe is communicated with the conveying pipe. In some embodiments, the discharge port of the material conveying pipe is provided with a plurality of material dividing pipes, the feed inlet of each material dividing pipe is communicated with the material conveying pipe, and the discharge ports of the material dividing pipes are uniformly distributed at the bottom of the combustion furnace. In some embodiments, the air inlet pipe is provided with dust removal openings, a plurality of dust removal openings are arranged on the side wall of the air inlet pipe, and a dust removal ventilation valve is arranged between the dust removal openings and the air inlet pipe. In some embodiments, the air outlet of the air inlet pipe is provided with an air inlet ventilation valve. In some embodiments, the crusher is provided with a number of feed conveyor pipes, the number of feed conveyor pipes being consistent with the number of crushers. In some embodiments, the circulating ventilation system comprises a wind dividing pipe, wherein the wind inlet pipe of the wind dividing pipe is communicated with the wind outlets of the dust removing fan, the wind dividing pipe is provided with wind outlets which are correspondingly arranged with the number of the wind outlet pipes, and the wind inlet of the wind outlet pipe is communicated with one of the wind outlets of the wind dividing pipe. In some embodiments, the crusher is positioned above the burner and the feed conveyor pipe is positioned obliquely downward from the crusher to the burner. In some embodiments, a purge pulse valve is provided between the crusher and the feed conveyor pipe. The utility model has the beneficial effects that: This pulverized coal conveying system is through having set up circulation ventilation system, and the air of air-supply line heats through the burning furnace, then flows the conveying pipeline, activates the buggy in the conveying pipeline, avoids piling up of buggy in the pipeline, heats the fuel, improves the combustion efficiency after the fuel gets into the burning furnace, has wholly improved the utilization ratio of fuel, because the buggy after the breaker is broken passes through the straight burning furnace of conveying pipeline in addition, has reduced the buggy and has collected the step, has improved entire system's work efficiency. Drawings Fig. 1 is a schematic structural view of the present utility model. The reference numbers and names in the figure correspond to those of the following components of 1, a combustion furnace, 2, a crusher, 3, a circulating ventilation system, 11, an air inlet opening, 21, a conveying pipe, 22, a material dividing pipe, 23, a cleaning pulse valve, 31, an air inlet pipe, 32, a material dividing pipe, 33, an air outlet pipe, 34, a dust removing fan, 311 and a dust removing opening. Detailed Description The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in th