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Flame return preventing device for feeding of boiler

An anti-tempering and feeding technology, applied in the field of boilers, can solve the problems of material combustion, easy tempering, and large combustion flame of biomass-fired boilers.

Inactive Publication Date: 2016-05-11
浙江中力热能股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a boiler feeding anti-backfire device, which solves the problem that the burning flame of the biomass boiler is large, easy to backfire, and causes the material in the hopper to burn, thereby providing a boiler that can prevent backfire and can be small Feed rate uniform feeding device

Method used

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  • Flame return preventing device for feeding of boiler
  • Flame return preventing device for feeding of boiler
  • Flame return preventing device for feeding of boiler

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Experimental program
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Embodiment Construction

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] refer to Figure 1 to Figure 3 As shown, a boiler feeding anti-tempering device includes a fixed flange, a rotating blade, an upper rotating shaft, an upper material barrel, a left end cover, a right end cover, an upper and lower material barrel connecting plate, a lower material barrel, a spiral blade, and a lower rotating shaft. , Shaft sleeve, the first fixed plate, even the shaft sleeve, a feeding motor, a secondary feeding motor, the second fixed plate, a rotating bearing, a fixed bearing.

[0019] The device is provided with a fixed flange 5 which is connected with the material box. Below the fixed flange 5 is an upper connecting plate 16, and below the upper connecting plate 16 are a primary feeding system and a secondary feeding system.

[0020] The upper connecting plate 16 is fixed to the upper material barrel 17 by welding. The left and...

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PUM

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Abstract

The invention relates to the field of boilers, in particular to a flame return preventing device for feeding of a boiler. The flame return preventing device is provided with a fixing flange which is connected with a feed box. The lower portion of the fixing flange is connected with an upper connecting plate. The flame return preventing device comprises a first-stage feeding system and a second-stage feeding system. The first-stage feeding system and the second-stage feeding system are connected through an upper charging barrel and lower charging barrel connecting plate. Due to the facts that the included angles between rotary blades in the first-stage feeding system and an upper rotary shaft are 90 degrees and the included angles between a feeding port of an upper charging barrel in the system and a central spindle and between a discharging port of the upper charging barrel in the system and the central spindle are both smaller than 90 degrees, the discharging port is covered with at least two blades no matter what rotation positions the rotary blades are located in, the upper portion is completely isolated from the lower portion, and a flame return preventing function is achieved.

Description

technical field [0001] The invention is widely used in the field of boilers that burn biomass and the like which are easy to produce tempering fuel, and is specifically a boiler feeding anti-tempering device. Background technique [0002] Some of the currently known biomass-fired boilers have no anti-backfire device. They rely on the gravitational force of the boiler induced draft fan to generate negative pressure, and the flame is drawn away to avoid the occurrence of backfire in the material box, but this method is very unreliable. The main reason is that the negative pressure decreases due to the accumulation of ash in the flue and the aging of the motor during the working period of the boiler, and the flame will slowly ignite the fuel cylinder until it spreads to the entire material box; Among the tempering devices, there is also an anti-tempering function in the case of negative pressure, and it still cannot prevent tempering during slight positive pressure combustion; ...

Claims

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Application Information

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IPC IPC(8): F23K3/00F23M11/02
CPCF23K3/00F23K2203/20F23M11/02
Inventor 赵伟忠徐建锋胡炉林
Owner 浙江中力热能股份有限公司