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Two-section grate system

A two-stage, grate technology, applied in the direction of grate, incinerator, combustion method, etc., can solve the problems of garbage stirring, insufficient turnover, incomplete combustion of garbage, easy to form agglomeration, etc., to ensure the effect of the incineration process. , The interchangeability of wearing parts is good, and the effect of ensuring reliability

Inactive Publication Date: 2010-12-29
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the garbage material layer is high and the height difference between adjacent grates is low, the garbage in operation is almost in a relatively static state, and cannot be stirred and mixed with each other well, so the garbage material layer cannot be fully burned, and the combustion efficiency is low. Difficult to achieve the index of thermal ignition reduction rate of ash and slag; the horizontal inclination angle of the grate is small (close to the horizontal), and the height of the incinerator is relatively low
[0006] 2. The grate system all adopts reverse push grate, and the inclination angle of the grate in the furnace is about 26°
[0007] 3. If the above two grate pushing methods are used alone, the agitation and turning of the garbage is still not sufficient, especially when moving on the same slope without height difference, the collision force of the garbage is small, the extrusion and agitation are not sufficient, and the garbage burning is not complete
And the head of existing fire grate sheet either has no boss, or the height of the boss is low, causing the overall height of the fire grate head to be low, so that the longitudinal movement of the fire grate can only stir and disperse the bottom layer or the garbage near the bottom layer. The upper layer of garbage cannot be mixed with the surrounding garbage, and the overall sliding state will be maintained, which will also prolong the drying time and affect the combustion efficiency
[0010] 6. Due to the high water content and complex composition of domestic waste in China, it is easy to form lumps and lumps when the waste is dried and burned

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Such as figure 1 , figure 2 , image 3 , Figure 4 Shown, the fire grate in the incinerator is divided into two sections from high to low, and one section above is the forward pushing section 6, and the following section is the reverse pushing section 7. The grate in the forward push section is composed of side beams 1, fixed beams 2, fixed grate pieces 3, movable beams 4, movable grate pieces 5, forward push and pull rods 24, supporting roller devices and front rocker arm drive mechanisms. A fixed beam 2 and a movable beam 4 are arranged between the side beams 1 on the left and right sides. The fixed beam 2 is in the shape of "M" or "back". The fixed beam 2 passes through the slot at the end of the fixed grate 3 , forming a fixed grate plate, and the end of the fixed beam 2 is fixed to the corresponding side beam 1 . The movable crossbeam 4 passes through the slots at the tails of the same row of movable grate pieces 5 to form a movable grate plate. The movable g...

Embodiment 2

[0057] Such as Figure 10 As shown, in this embodiment, the pull rod frame of the forward push section 6 is driven by the front rocker arm drive mechanism, and the pull rod frame of the reverse push section is driven by the front direct drive mechanism. The front direct drive mechanism is composed of drive cylinder 11, drive cylinder base 12 and direct drive connecting rod 19, wherein the cylinder block of drive cylinder 11 is hinged with drive cylinder base 12, and the piston rod of drive cylinder 11 is connected with the direct drive connecting rod 19. One end is hinged, and the other end of the direct drive link 19 is connected with the corresponding pull rod frame. The rest of the structure of this embodiment is the same as that of Embodiment 1, and will not be repeated here.

Embodiment 3

[0059] Such as Figure 11 As shown, in this embodiment, a group of reverse push pull rods 25 are respectively arranged at the front and rear of the reverse push section 7, and each set of reverse push pull rods 25 and the corresponding movable beam 4 form a pull rod frame, and the front and rear pull rod frames are respectively equipped with A side rocker drive mechanism. The rest of the structure of this embodiment is the same as that of Embodiment 1, and will not be repeated here.

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Abstract

The invention discloses a two-section grate system, wherein a grate is divided into two sections from high to low, the upper section is a forward push section, and the lower section is a backward push section, and head parts of grate sheets on the forward push section face the low point direction of the grate, and head parts of grate sheets on the backward push section all face the high point direction of the grate. Movable crossbeams on the same grate section are provided with draw rods which are arranged in parallel in left and right, and the left and the right draw rods are supported by a roller device, and are connected with the movable crossbeams to form a draw rod frame, and the end parts of the draw rod frame are connected with driving mechanisms. The grate system adopts a two-section structure, wherein the upper section is a forward pushing section and the lower section is a backward pushing section, and the two sections are respectively provided with the independent driving mechanisms, so as to conveniently control the retention time of the material layers on each section, thereby realizing the movable technological control of the whole trash material layer, improving the mixture and disturbance of trash with air through continuous stirring and mixture, and guaranteeing the reliability of trash transport and incineration process effect by assisting with drying and combustion. The two-section grate system has the characteristics of less specification of spares and spare parts, good interchangeability of quick-wear parts and low production and maintenance cost.

Description

technical field [0001] The invention belongs to the technical field of solid waste incineration treatment, and in particular relates to a two-stage fire grate system of an urban domestic waste incinerator. Background technique [0002] The most important component of a solid waste incinerator is the incinerator grate system. The incinerator grate system is responsible for the transportation and loading of garbage in the furnace, and at the same time improves the mixing and disturbance of garbage and air to improve combustion efficiency. [0003] Now there are many types of incineration grate systems, especially the reciprocating mechanical incineration grate system. It is a fixed grate plate and a movable grate plate that overlap regularly and alternately to form a waste burning support body. The plate moves back and forth back and forth, combined with the inclined installation form of the grate surface, which causes the garbage material layer to stir and mix irregularly fo...

Claims

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Application Information

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IPC IPC(8): F23G5/44F23H13/00
Inventor 林顺洪唐一科朱新才徐明李翔丁又青田祖安
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY