CN202350052U

CN202350052U - Novel incineration fire grate segment with right self-rotation combustion air flow

Info

Publication number: CN202350052U
Application number: CN201120263912XU
Authority: CN
Inventors: 陈泽峰; 曾纪进; 陈国艳
Original assignee: FUJIAN FENGQUAN ENVIRONMENTAL PROTECTION CONTROL Co Ltd
Current assignee: FUJIAN FENGQUAN ENVIRONMENTAL PROTECTION CONTROL Co Ltd
Priority date: 2011-07-25
Filing date: 2011-07-25
Publication date: 2012-07-25
Anticipated expiration: 2021-07-25

Abstract

The utility model discloses a novel incineration fire grate segment with right self-rotation combustion air flow, which is characterized by mainly comprising right rotation fire grate segments which are adjacently and transversely arranged one by one, wherein each fire grate segment mainly comprises a clamping groove, a fire grate body, a spraying neck and a nozzle; the nozzle is composed of a spraying opening and a nozzle inner spiral groove; a combusting air through hole is formed by the spraying neck and the nozzle; the combusting air through hole of each right rotation fire grate segment passes through from the inner wall of the head end of each fire grate segment to the outer wall of the head end of each fire grate segment by an angles inclining from leftward to rightward; and a thread direction in the nozzle inner spiral groove is in counterclockwise rotation when being observed from the spraying opening to the neck. The novel incineration fire grate segment disclosed by the utility model can reduce the ignition loss of domestic garbage of our country, improves the heat value of garbage, improves the incineration efficiency and realizes the energy saving and the environment friendliness of garbage incineration.

Description

Novel incinerator screening with right spinning combustion-gas flow

Technical field

The utility model relates to technology such as mechanics, engineering mechanics, hydrodynamics and two phase flow, relates to the burning fire-grating chip architecture, refers in particular to the novel incinerator screening with right spinning combustion-gas flow.

Background technology

Recent two decades comes; No matter be in the world or domestic; Because continually developing of natural resources utilizes and The development in society and economy, particularly along with the high concentration of population and developing rapidly of urbanization, the rubbish of countries in the world all increases with the average speed faster than three times of its economic growth rates.The annual waste incineration amount in the whole world is about 1.1 hundred million tons, and the incineration treatment of garbage factory of the overwhelming majority is distributed in developed country.About 1900 of the existing incineration plant of Japan, nearly 4,000 ten thousand tons of annual burning disposal amount is the largest country of incineration treatment of garbage in the world.Advantages such as incineration treatment of garbage has that floor space is little, addressing is easier to, handles fast, remarkable, the innoxious more thorough and recyclable waste gas of incineration of minimizing obtain application more and more widely in countries in the world.

The development trend of China's garbage disposal is: the regeneration on the categorised collection basis more and more comes into one's own; The standard of garbage loading embeading is with increasingly high, and ratio will progressively descend; Waste incineration is with stable development, and waste gas of incineration utilizes the ratio of particularly cogeneration to rise to some extent.Because national policy encourage growth waste incineration and generating electricity industry, existing at present a lot of garbage incinerating power plants put into operation, and more or less a hundred waste incineration and generating electricity project is just among planning construction.But because the characteristic of China's house refuse is: contain the moisture height, be generally 55%-65%, some southern cities summer up to 70%; Simultaneously; The kitchen is surplus big with debirs ratio such as food and drink in China's house refuse, be 45%-55%, so refuse thermal value is lower; It is abundant inadequately to burn, and hot burn decrement rate is higher.In addition, because rubbish is thicker on existing burning fire grate, stir insufficiently, mix inhomogeneously, firing efficiency is low, causes the economic benefit of many garbage incinerating power plants undesirable; Also because temperature is not high enough in the incinerator burner hearth, pernicious gas is more in the flue gas of discharge, causes substantial pollution.

Therefore, the refuse incinerator row that to the characteristics of China's rubbish, the development investment cost is low, energy-saving and environmental protection, actual motion business efficiency are high just seems particularly important.

The utility model content

The purpose of the utility model provides a kind of novel incinerator screening with right spinning combustion-gas flow; It can reduce the hot burn decrement rate of China's house refuse, improves the calorific value of rubbish, improves firing efficiency; Realize the energy-saving and environmental protection of waste incineration, solve all the problem that exists in the aforementioned prior art.

For realizing the utility model purpose; The utility model inventor takes following technical scheme: with the novel incinerator screening of right spinning combustion-gas flow; It mainly rearranges by the dextrorotation fire grate segment is laterally adjacent one by one; Fire grate segment all mainly is made up of draw-in groove, fire grate body, spray neck, nozzle, and wherein nozzle then is made up of spout and nozzle inside spin groove, and spray neck and nozzle constitute the combustion air through hole; The combustion air through hole of dextrorotation fire grate segment be from fire grate segment head end inwall with angle of inclination break-through to fire grate segment head end outer wall from left to right, the hand of spiral in the nozzle inside spin groove is seen as toward spray neck direction from spout and is rotated counterclockwise.

The combustion air through hole of the utility model patent dextrorotation fire grate segment is with angle of inclination break-through to fire grate segment head end outer wall from left to right from fire grate segment head end inwall; Hand of spiral in the nozzle inside spin groove is seen as toward spray neck direction from spout and is rotated counterclockwise; It is that (gas comes flow path direction to rotate to the right in right rotation that its ejection air-flow spinning direction is observed the right-hand rule of once recording; Hold cylindrical air-flow with the right hand and come flow path direction, thumb is consistent with airflow direction, and then four finger directions are air-flow spinning direction).The air velocity of dextrorotation fire grate segment spontaneous combustion air hole ejection can be accomplished spinning (band spiral air flow) in the utility model patent, forms little turbulent flow, can play the effect of cutting rubbish; Perhaps push, shear, pulverize the agglomerating rubbish of sintering, avoid rubbish agglomerating, improve efficiency of combustion; And to a certain degree play the purpose of upset material; Make the material (as: rubbish, stalk, mud, timber etc.) on the fire grate can roll, stir, obtain more fully burning, improve the calorific value of waste incineration; Reduce the hot burn decrement rate of rubbish, effectively improve waste incineration efficient.The little turbulent flow that dextrorotation fire grate segment combustion air flow forms contacts with fire grate, can play the cooling fire grate, avoids the fire grate segment high temperature corrosion; And the air-flow entering burner hearth of absorption fire grate segment heat, can improve efficiency of combustion.

The utility model is applicable to newly-built waste incineration project, also is applicable to the waste incineration project that will transform.

Description of drawings

Fig. 1 cuts open structural representation in the dextrorotation fire grate segment of the utility model;

Fig. 2 is the dextrorotation fire grate segment upward view of the utility model;

Fig. 3 shows sketch map for dextrorotation fire grate segment a-a shown in Figure 1 cuts open;

Fig. 4 is the dextrorotation fire grate segment right view of the utility model;

Fig. 5 is the little turbulent flow sketch map of spinning that the dextrorotation fire grate segment combustion air flow of the utility model forms;

Fig. 6 is the work sketch map after the dextrorotation fire grate segment of the utility model is arranged assembling;

Fig. 7 is for the dextrorotation fire grate segment of the utility model and with the vertical permutation and combination use of the fire grate segment of left spinning combustion-gas flow work sketch map;

Fig. 8 is the dextrorotation fire grate segment of the utility model and the vertical permutation and combination use of the fire grate segment work sketch map of old-fashioned no spinning combustion-gas flow.

The specific embodiment

Combine Figure of description to describe the embodiment of the utility model in detail: like Fig. 1 and shown in Figure 6, with the novel incinerator screening of right spinning combustion-gas flow, it mainly rearranges by dextrorotation fire grate segment B is laterally adjacent one by one at present; The dextrorotation fire grate segment mainly is made up of draw-in groove 1, fire grate body 5, spray neck 3, nozzle 4; Wherein 4 at nozzle is made up of spout 7 and nozzle inside spin groove 8, and spray neck 3 and nozzle 4 formation combustion air through holes are as shown in Figure 3; The combustion air through hole of dextrorotation fire grate segment B is with angle of inclination break-through to fire grate segment head end outer wall 92 ' from left to right from fire grate segment head end inwall 91 '; Hand of spiral in the nozzle inside spin groove is seen as toward spray neck direction from spout and is rotated counterclockwise, and as shown in Figure 4, the combustion air through hole is located at fire grate segment head end 9 middle parts of fire grate segment B; As depicted in figs. 1 and 2, the fire grate body back side is provided with gusset 2.

During work, the spray neck 3 of a wind process dextrorotation fire grate segment gets into nozzles 4, and the nozzle inside spin grooves 8 in the nozzle 4 can change the direction of combustion-gas flows, the air-flow formation spinning (right rotation, as shown in Figure 5) that nozzle is come out.Rubbish fully cuts, mixes under the effect of right spinning air-flow, and is thoroughly broken, can fully burning on fire grate.Little turbulent flow as shown in Figure 6, that dextrorotation fire grate segment combustion air flow forms contacts with fire grate, can play the cooling fire grate, avoids the fire grate segment high temperature corrosion; And the air-flow entering burner hearth of absorption fire grate segment heat, can improve efficiency of combustion.

The combustion air through hole of dextrorotation fire grate segment is located at the fire grate body head end middle part of fire grate segment in above-mentioned embodiment; The thin ash of rubbish and the uncombusted fine particle that both can prevent to be deposited on the fire grate leak material through nozzle; Also can play the effect of rubbish prebake processing, pulverization process; Further reduce hot burn decrement rate, improved rubbish thermalization efficient.

The fire grate body back side of dextrorotation fire grate segment is provided with gusset in above-mentioned embodiment, can strengthen the intensity of fire grate, prolongs the service life of fire grate, practices thrift cost.

In the above-described embodiments, the combustion air through hole of dextrorotation fire grate segment B is the right side of break-through to fire grate segment head end outer wall 92 ', and certainly, the combustion air through hole of dextrorotation fire grate segment B also can be centre position or other position of break-through to fire grate segment head end outer wall.

The novel incinerator screening of the right spinning combustion-gas flow of band in the above-described embodiments can be used with the vertical permutation and combination of other type fire grate segment; As with the fire grate segment A (as shown in Figure 7) of left spinning combustion-gas flow vertically permutation and combination use, or be vertical permutation and combination (as shown in Figure 8) with the fire grate segment C of old-fashioned no spinning combustion-gas flow.

Claims

1. with the novel incinerator screening of right spinning combustion-gas flow; It is characterized in that: it mainly rearranges by the dextrorotation fire grate segment is laterally adjacent one by one; Fire grate segment all mainly is made up of draw-in groove, fire grate body, spray neck, nozzle; Wherein nozzle then is made up of spout and nozzle inside spin groove; Spray neck and nozzle constitute the combustion air through hole, the combustion air through hole of dextrorotation fire grate segment be from fire grate segment head end inwall with angle of inclination break-through to fire grate segment head end outer wall from left to right, the hand of spiral in the nozzle inside spin groove is seen as and is rotated counterclockwise toward spraying the neck direction from spout.

2. the novel incinerator screening of the right spinning combustion-gas flow of band according to claim 1 is characterized in that: the combustion air through hole of dextrorotation fire grate segment is located at the fire grate body head end middle part of fire grate segment.

3. the novel incinerator screening of the right spinning combustion-gas flow of band according to claim 1 is characterized in that: the fire grate body back side of dextrorotation fire grate segment is provided with gusset.

4. the novel incinerator screening of the right spinning combustion-gas flow of band according to claim 1 is characterized in that: the combustion air through hole of dextrorotation fire grate segment is the right side of break-through to fire grate segment head end outer wall.

5. the novel incinerator screening of the right spinning combustion-gas flow of band according to claim 1 is characterized in that: the combustion air through hole of dextrorotation fire grate segment is the centre position of break-through to fire grate segment head end outer wall.