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 manua

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

Examples

Experimental program
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Example Embodiment

[0035] Example one

[0036] It can be seen from the drawings that the present invention relates to an anti-clogging device for a biomass boiler screw feeder, which includes a biomass boiler screw feeder 1 and a plug tube 2. The inlet of the plug tube 2 is connected to the biomass boiler spiral The outlet of the feeder 1 and the outlet of the plug tube 2 are connected to the inlet of the feeding trough 3. According to the main reason for the material blocking caused by the feeder, the length of the plug tube is shortened and the screw push rod of the screw feeder is extended. The length of the modification measures, and open the material hole on the side of the material plug tube to reduce the difficulty of cleaning the material plug. At the same time, to avoid the reduction of the material plug anti-tempering function, the measures of anti-tempering baffle plus assembly weight and limit block are taken ,details as follows:

[0037] The material plug tube 2 is a shortened material ...

Example Embodiment

[0043] Example two

[0044] The second embodiment is the same as the basic principle of the first embodiment, but the structure is different. It is a biomass boiler screw feeder anti-blocking device, including the biomass boiler screw feeder and the plug tube, the inlet of the plug tube Connected to the outlet of the biomass boiler screw feeder, and the outlet of the plug tube is connected to the inlet of the feeding trough; the feature is that the plug tube is a shortened plug tube, and a rotatable plug tube is installed in the plug tube. The anti-tempering baffle, the rotating shaft of the anti-tempering baffle extends to the plug tube, and a rotating mechanism that controls the rotation of the anti-tempering baffle is connected to the rotating shaft that extends out of the plug tube.

[0045] The rotating mechanism is a solenoid valve or an electric rotating mechanism. A solenoid valve or an electric control device is connected to the rotating shaft of the anti-tempering baffle....

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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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