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Fan coal mill with both coal groove angle and motor rotating speed being capable of being adjusted

A technology of fan coal pulverizer and motor speed, applied in grain processing and other directions, can solve the problems of narrow fineness range, difficult impact and crushing effect, coarse particle size, etc., to meet the requirements of fine adjustment and reduce equipment operating costs , the effect of improving the adaptability of coal

Pending Publication Date: 2020-11-20
XIAN THERMAL POWER RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the actual use process, it is found that the coal powder ground by the fan coal mill has a narrow range of fineness, and the particle size is relatively coarse. Combustion's requirements for fineness adjustability of pulverized coal

Method used

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  • Fan coal mill with both coal groove angle and motor rotating speed being capable of being adjusted

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Embodiment Construction

[0018] The present invention is described in further detail below in conjunction with accompanying drawing:

[0019] refer to figure 1 , the fan coal mill with double adjustable coal tank angle and motor speed according to the present invention includes a coal drop pipe 4, a raw coal conveying pipeline, a blow chamber, a coal mill motor 5, a coal tank motor 1 and a powder outlet pipe 7; The bottom outlet of the coal pipe 4 is connected with the entrance of the raw coal conveying pipeline, and the raw coal conveying pipeline is connected with the entrance of the percussion chamber, and the percussion wheel 6 is arranged in the percussion chamber, and the coal groove 3 is arranged inside the raw coal conveying pipeline, and the coal mill motor 5 The output shaft of the coal tank motor 1 is connected to the beating wheel 6, the output shaft of the coal tank motor 1 is connected to the coal tank 3, the outlet of the percussion chamber is connected to the powder outlet pipe 7, the ...

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Abstract

The invention discloses a fan coal mill with both the coal groove angle and the motor rotating speed being capable of being adjusted. The fan coal mill comprises a coal falling pipe, a raw coal conveying pipeline, a beating cavity, a coal mill motor, a coal groove motor and a powder discharging pipe. A bottom outlet of the coal falling pipe communicates with an inlet of the raw coal conveying pipeline, and the raw coal conveying pipeline communicates with an inlet of the beating cavity. A beating wheel is arranged in the beating cavity. A coal groove is formed in the raw coal conveying pipeline. An output shaft of the coal mill motor is connected with the beating wheel. An output shaft of the coal groove motor is connected with the coal groove. An outlet of the beating cavity communicateswith the powder discharging pipe. The coal mill motor is connected with a frequency converter. The adjusting range of the fineness of pulverized coal of the coal mill is wide.

Description

technical field [0001] The invention relates to a fan coal pulverizer, in particular to a fan coal pulverizer with double adjustable coal tank angle and motor speed. Background technique [0002] The fan coal mill is a pulverizing equipment used to provide fuel for coal-fired boilers in thermal power plants. It integrates three functions of drying, pulverizing and pulverizing. When the raw coal and drying medium (hot furnace smoke, hot secondary air and cold furnace smoke) enter the coal mill through the coal drop pipe, the two are fully mixed. The moisture on the surface of the raw coal is evaporated by the drying medium, and the obtained coal is dry. After the raw coal enters the coal mill, the crushing process can be decomposed into two steps: the first step is that under the action of the drying medium (temperature > 200°C), the external moisture of the coal particles is continuously evaporated, and the surface is cracked until it is completely broken. It is called ...

Claims

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Application Information

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IPC IPC(8): B02C13/286B02C13/06B02C13/30B02C13/28B02C23/02
CPCB02C13/06B02C13/2804B02C13/286B02C13/30B02C23/02B02C2013/28672
Inventor 王林杨博赵景涛高景辉张亚夫王红雨孟颖琪
Owner XIAN THERMAL POWER RES INST CO LTD
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