Anti-blocking method and equipment for biomass boiler worm feeder

A technology of screw feeder and biomass boiler, which is applied in the direction of conveyor control device, combustion method, supply configuration, etc., and can solve problems such as setting too high motor over-torque protection setting, manual cleaning, and insufficient fuel quality , to achieve the effect of reducing the probability of material blockage, resisting the decline of fire-fighting and tempering ability, and ensuring continuous and stable operation

Inactive Publication Date: 2017-01-25
HUNAN THERMAL POWER CONSTR CO LTD OF CHINA ENERGY ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The purpose of the present invention is to solve the problems caused by the failure of the fuel quality to meet the design requirements, the unreasonable design of the length of the plug section of the feeder, and the over-torque protection setting value of the motor being too high in the actual operation of the existing biomass CFB boiler screw feeder. The feeder is often blocked, and the furnace must be stopped for manual cleaning, which affects the normal operation of the unit. A method and device for preventing the screw feeder of the boiler from being blocked is provided. This method and device for preventing the screw feeder of the boiler can effectively solve the problem The material blocking problem of the screw feeder of the biomass CFB boiler, and the principle is simple and clear, and the transformation and processing are simple and easy

Method used

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  • Anti-blocking method and equipment for biomass boiler worm feeder
  • Anti-blocking method and equipment for biomass boiler worm feeder
  • Anti-blocking method and equipment for biomass boiler worm feeder

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Embodiment 1

[0036] It can be seen from the accompanying drawings that the present invention relates to an anti-blocking device for a biomass boiler screw feeder, comprising a biomass boiler screw feeder 1 and a plug tube 2, the inlet of the plug tube 2 is connected to the screw feeder of the biomass boiler The outlet of the feeder 1 and the outlet of the plug tube 2 are connected to the inlet of the feed tank 3; according to the main cause of the feeder blocking, the length of the plug tube is shortened, and the screw push rod of the screw feeder is extended. The improvement measures of the length, and opening holes on the side of the plug tube to reduce the difficulty of cleaning the plug, and at the same time, in order to avoid the reduction of the anti-tempering function of the plug, the measures of anti-tempering baffle plus assembly weight and limit block are adopted ,details as follows:

[0037] The plug tube 2 is a shortened plug tube, the length of the screw push rod of the screw ...

Embodiment 2

[0044] The basic principle of the second embodiment is the same as that of the first embodiment, but the structure is different. It is a kind of anti-blocking device for the screw feeder of the biomass boiler, including the screw feeder of the biomass boiler and the plug pipe, and the inlet of the plug pipe It is connected to the outlet of the screw feeder of the biomass boiler, and the outlet of the plug pipe is connected to the inlet of the feeding trough; its characteristic is that the plug pipe is a shortened type plug pipe, and a rotatable screw is installed in the plug pipe The anti-temper baffle, the rotating shaft of the anti-temper baffle stretches out to the plug tube, and the rotating shaft extending out of the plug tube is connected with a rotating mechanism that controls the rotation of the anti-temper baffle.

[0045] The rotating mechanism is a solenoid valve or an electric rotating mechanism, and a solenoid valve or an electric control device is connected to the...

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Abstract

The invention discloses an anti-blocking method and equipment for biomass boiler worm feeder, wherein a length of feeding pipe is put to use in front of the biomass boiler worm feeder, the materials of the biomass boiler worm feeder are fed into the feeding trough through the feeding pipe and tempering of feeding trough is prevented by a stopper inside the feeding pipe. The length of feeding pipe is shortened in order to prevent blocking of the feeding pipe and the anti tempering baffle is set inside the feeding pipe as well. The rotary shaft that is designed as a whole with anti tempering baffle is set to control the turning of anti tempering baffle. The opening degree of anti tempering baffle can be adjusted by rotary shaft so that the density of feeding piece is increased when the feeding is in service and the ability to anti tempering baffle can be improved through the increased density of feeding piece, achieve the purpose of both effectively preventing the blocking and tempering.

Description

technical field [0001] The invention relates to a boiler operation method and equipment, in particular to an anti-blocking method and device for a biomass (CFB) boiler screw feeder, which is mainly used in the biomass boiler screw feeder system and belongs to biomass The technical field of circulating fluidized bed boiler equipment manufacturing. Background technique [0002] At present, in the actual operation of CFB boilers in domestic biomass power plants, the screw feeder often appears to be blocked. The design characteristic parameters are very different. The fuel enters the feeder and forms a plug at the plug tube after being propelled by the screw. After the plug is formed, if it cannot enter the furnace from the feed tank smoothly, it will agglomerate at the plug tube , and the accumulation is getting tighter, causing the torque protection action of the screw feeder to trip. When the feeder is blocked and tripped, the furnace can only be shut down to open the top c...

Claims

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Application Information

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IPC IPC(8): F23K3/00B65G33/24B65G43/00
CPCF23K3/00B65G33/24B65G43/00B65G2201/04F23K2203/202
Inventor 张雪皎曹皓刘志能刘旭
Owner HUNAN THERMAL POWER CONSTR CO LTD OF CHINA ENERGY ENG GRP
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