CN214120042U - Primary air distribution system of garbage incinerator - Google Patents

Abstract

In order to solve the existing problem, the utility model provides a waste incinerator wind air distribution system, the left and middle of grate drying section, right region are an independent wind distribution region jointly, the left and middle of burn-out section, right region are an independent wind distribution region jointly, owing to divide into left side row, well row and right row correspondingly respectively with the left and middle, right region of burning section, divide into a plurality of sections respectively with left side row, well row and right row, left side row, well row and right row are an independent wind distribution region respectively. Therefore, the air distribution mode of the combustion section is changed from the existing section air distribution into row (left row, middle row and right row) air distribution, and different rows are provided with air distribution by different fans, so that a better adjusting effect can be obtained by the air distribution mode according to the difference of material layers of all rows, and the problems in the prior art can be effectively solved.

Description

Primary air distribution system of garbage incinerator

Technical Field

The utility model relates to a waste incinerator system especially relates to a waste incinerator wind distribution system.

Background

Grate segments (also known as grate tiles and grates) are largely used in grate incinerators to support, stir, and transport solid combustible materials in the incinerator. The existing fire grate comprises a turnover fire grate segment and a fixed fire grate segment. In the prior art, the upper surfaces of the fire grate segments are smooth, the fire grate segments cause the movement of garbage through the circular translation action, so that the garbage on the fire grate segments is pushed forwards to move, and the garbage integrally moves on the upper plane of the fire grate in a lump state due to the smooth surfaces of the fire grate segments.

In order to ensure that garbage can be fully combusted on the fire grate, primary air needs to be provided for the fire grate from bottom to top under the fire grate. A complete grate for a waste incinerator is usually up to or even more than 10 meters in length and width, and therefore, the grate needs to be divided into regions and supplied with primary air according to the regions. The garbage is divided into a drying section, a combustion section and an after-burning section in sequence according to the running direction (namely the longitudinal direction) of the garbage from the garbage entering into the grate until the combustion is finished. Generally, the grate is divided into a first section, a second section, a third section, a fourth section and a fifth section along the longitudinal direction, wherein the first section corresponds to the drying section; the second section, the third section and the fourth section correspond to the combustion section; the five sections correspond to the burnout section. Because the fire grate is very wide, each section of the fire grate is divided into a left area, a middle area and a right area in the transverse direction. An ash bucket is respectively arranged below each fire grate area, and primary air is provided for the fire grates through the ash buckets

In the prior art, one to five sections of a grate furnace are respectively provided with primary air by an independent fan. Namely, the left, middle and right areas of one section are independently conveyed by one fan, and the left, middle and right areas of the other section are independently conveyed by the other fan until five sections. And the air volume of the left ash bucket, the middle ash bucket and the right ash bucket is respectively controlled in the left area, the middle area and the right area of each section through three electric butterfly valves.

In the prior art, the same fan simultaneously conveys primary air to the left area, the middle area and the right area of each section of fire grate. The air volume distribution of the three areas depends on the opening of the butterfly valve of the air door and the material thickness of the areas, when the difference of the material thickness is small, the opening of the butterfly valve of the air door plays a role in determining, and at the moment, the material layer can be maintained in a small deviation state through the fine operation of the butterfly valve of the air door. When the material thickness difference exceeds a threshold value, the influence of the material thickness is larger than the influence of the opening degree of the air door baffle, the larger the material layer thickness is, the smaller the air volume is, the smaller the material layer thickness is, the larger the air volume is, so that the thin material area is quickly burnt out, the combustion in the thick material area is further weakened, the material deviation condition is further worsened. Therefore, when the difference of the thicknesses of the material layers is large, the air distribution mode of the sections is not enough to effectively adjust the combustion condition.

SUMMERY OF THE UTILITY MODEL

In order to solve the existing problem, the utility model provides a waste incinerator wind air distribution system, the left and middle of dry section, right region are an independent wind distribution region jointly, the left and middle of burn-out section, right region are an independent wind distribution region jointly, owing to divide into the left side row respectively with the left and middle, right region of burning section, well row and right row respectively, divide into a plurality of sections respectively with the left side row, well row and right row, the left side row, well row and right row are an independent wind distribution region respectively. Therefore, the air distribution mode of the combustion section is changed from the existing section air distribution into row (left row, middle row and right row) air distribution, and different rows are provided with air distribution by different fans, so that a better adjusting effect can be obtained by the air distribution mode according to the difference of material layers of all rows, and the problems in the prior art can be effectively solved.

The utility model provides a technical scheme that technical problem adopted is, a waste incinerator wind air distribution system, the left side of dry section, in, right region is an independent wind distribution region jointly, the left side of burn-out section, in, right region is an independent wind distribution region jointly, characterized by, the left side of burning the section, in, right region divides into the left side row respectively correspondingly, well row and right row, divide into a plurality of sections respectively with the left side row, well row and right row, the left side is listed as, well row and right row are an independent wind distribution region respectively.

Preferably, the left row, the middle row and the right row of the combustion section are respectively divided into three sections along the longitudinal direction.

The utility model has the advantages that: the utility model relates to a waste incinerator wind air distribution system, the left side of dry section, in, the right region is an independent air distribution region jointly, burns the left side of burn-out section, in, the right region is an independent air distribution region jointly, owing to divide into the left side respectively correspondingly with the left side of burning section, in, the right region is listed as, well as the right side is listed as, with the left side be listed as, well as the right side be listed as and divide into a plurality of sections respectively, the left side is listed as, well as be listed as and the right side is listed as an independent air distribution region respectively. Therefore, the air distribution mode of the combustion section is changed from the existing section air distribution into row (left row, middle row and right row) air distribution, and different rows are provided with air distribution by different fans, so that a better adjusting effect can be obtained by the air distribution mode aiming at the difference of left, middle and right material layers of each section, and the problems in the prior art can be effectively solved.

Drawings

Fig. 1 and 2 are schematic diagrams illustrating the division of the air distribution area of the grate according to an embodiment of the prior art.

Fig. 3 is a schematic view of the air distribution area division of the grate according to the first embodiment of the present invention.

In the figure:

1. 2, 3, 4 and 5 of fans,

6. an electric butterfly valve.

Detailed Description

Fig. 1 and 2 are schematic diagrams illustrating the division of the air distribution area of the grate according to an embodiment of the prior art. Fig. 1 shows that, in the prior art, garbage is divided into a drying section, a combustion section and an after-burning section in sequence from the garbage entering a grate until the combustion is finished according to the garbage running direction (i.e. the longitudinal direction). The figures show that the grates of the waste incinerator are longitudinally divided into a first section, a second section, a third section, a fourth section and a fifth section from the drying section, the burning section to the burning section. Wherein one section corresponds to the drying section; the second section, the third section and the fourth section correspond to the combustion section; the five sections correspond to the burnout section.

Wherein, a section of area is divided into a section of left area, a section of middle area and a section of right area along the transverse direction; similarly, the two-section area is divided into a two-section left area, a two-section middle area and a one-section right area along the transverse direction; the three to five sections are divided into regions in the same manner.

Fig. 2 shows that, in the prior art, one to five sections of the grate furnace are respectively provided with primary air by an independent fan. Namely, a section of left area, a section of middle area and a section of right area are independently conveyed by a No. 1 typhoon machine; the left area, the middle area and the right area of the two sections are independently conveyed with primary air by a No. 2 typhoon machine; up to five stages. And the air volume of the left ash bucket, the middle ash bucket and the right ash bucket is respectively controlled in the left area, the middle area and the right area of each section through three electric butterfly valves.

However, when the difference of the material layer thickness exceeds the threshold value, the influence of the material layer thickness is greater than the influence of the opening degree of the damper baffle, and the larger the material layer thickness is, the smaller the air volume is, the smaller the material layer thickness is, the larger the air volume is, so that the thin material area is quickly burnt out, the combustion of the thick material area is further weakened, the material deviation condition is continuously worsened. Therefore, when the difference of the material layer thickness is large, the air distribution mode of the segment cannot effectively adjust the combustion condition caused by the material layer thickness.

Fig. 3 is a schematic view of the air distribution area division of the grate according to the first embodiment of the present invention. In the figure, different from the prior art, in the primary air distribution system of the garbage incinerator, the left area, the middle area and the right area of one section (namely, a drying section) are jointly an independent air distribution area and independently distributed by a No. 1 fan, the left area, the middle area and the right area of five sections (namely, an ember section) are jointly an independent air distribution area and independently distributed by a No. 5 fan, and the difference is that the left area, the middle area and the right area of the burning section are respectively and correspondingly divided into a left row, a middle row and a right row, wherein the left row comprises a two-section left area, a three-section left area and a four-section left area; the middle column comprises a second middle area, a third middle area and a fourth middle area; the right column comprises a two-section right area, a three-section right area and a four-section right area; the left row is independently distributed by the No. 2 fan, the middle row is independently distributed by the No. 3 fan, and the right row is independently distributed by the No. 4 fan. In the embodiment, the air distribution mode of the combustion section is changed from the existing section air distribution into the row air distribution, and different rows are provided with air distribution by different fans, so that a better adjusting effect can be obtained by the air distribution mode according to the difference of material layers of each row, and the problems in the prior art can be effectively solved.

Claims (2)

1. A primary air distribution system of a garbage incinerator is characterized in that the left area, the middle area and the right area of a drying section are an independent air distribution area together, the left area, the middle area and the right area of a burning section are an independent air distribution area together, the primary air distribution system is characterized in that the left area, the middle area and the right area of the burning section are correspondingly divided into a left row, a middle row and a right row respectively, the left row, the middle row and the right row are divided into a plurality of sections respectively, and the left row, the middle row and the right row are independent air distribution areas respectively.

2. The primary air distribution system of a garbage incinerator according to claim 1, wherein the left, middle and right rows of the combustion section are divided into three sections in the longitudinal direction.

Images