CN101922715B - Two-stage garbage incinerator - Google Patents

Abstract

A two-stage garbage incinerator, a secondary air supply port is provided on the front and rear arches of the furnace body, and an ignition and combustion support hole is opened on the rear arch; the grate in the furnace body is divided into two sections from high to low, The upper section is the forward pushing section, and the lower section is the reverse pushing section, each section is provided with an independent primary air chamber; The heads of the grate pieces on the section all face the direction of the high point of the grate; the movable beam of the same section of the grate is equipped with left and right pull rods arranged side by side, and the left and right pull rods are supported by roller devices. The pull rod is connected with the movable beam to form a pull rod frame, and the end of the pull rod frame is connected with the front rocker arm drive mechanism or the side rocker arm drive mechanism or the front direct drive mechanism. The invention can realize the full drying, complete combustion and burning of the whole garbage material layer, and guarantee the garbage incineration effect and thermal ignition loss rate. At the same time, there are fewer spare parts and spare parts, good interchangeability of wearing parts, and low manufacturing and maintenance costs.

Description

Two-stage waste incinerator

technical field

The invention belongs to the technical field of solid waste incineration treatment, and in particular relates to an incinerator for municipal domestic waste.

Background technique

The existing waste treatment technologies mainly include incineration, sanitary landfill, composting, and waste recycling. Among the conventional waste treatment technologies, incineration has the advantages of obvious reduction effect, complete harmlessness, small land occupation, utilization of waste heat energy, and less secondary pollution, which meets the strategic requirements of my country's sustainable development.

Among the existing incineration processes and equipment, there are various forms of grate incinerators, and its application accounts for more than 80% of the total waste incineration market in the world. Among them, the reverse-push grate is used in the furnace body, and the tilting and reverse-push functions make the bottom layer of the material layer garbage go up, and the upper layer of garbage goes down, constantly turning and stirring, fully contacting with the air, and realizing the complete combustion of the garbage. At the same time, since the reverse push can prolong the residence time of the garbage in the furnace accordingly, under the same processing capacity, the grate area can usually be smaller than that of the forward push grate. The existing problems are as follows: First, for the characteristics of high water content and complex composition of domestic waste in our country, the reverse grate’s ability to transport this type of waste is weak, especially the bottom layer of waste in the drying stage, which is easy to form agglomerates or blocks, pasted on the grate surface to stop movement or move very slowly, as the moisture content gradually decreases during the drying process, the garbage will continue to be transported forward; second, the bottom layer of garbage will stick to the grate surface during the drying stage, blocking the grate The first air hole on the top affects the air supply effect and has a greater impact on the drying effect. It prolongs the drying time, delays the ignition of the garbage, increases the residence time of the garbage in the entire furnace, and directly affects the incineration process in the furnace; The device continuously feeds materials into the furnace. During the drying stage, the upper layer of garbage is squeezed and conveyed forward, while the lower layer of garbage is conveyed relatively slowly, resulting in a large difference in the movement speed of the upper layer and the bottom layer of garbage.

In addition, there is also an incinerator that uses a forward-push grate in the furnace body. The tilting and forward-push action make the entire material layer garbage go down, and the grate and the material layer move in the same direction, using the difference between the front and rear grates or the grate stroke to achieve The garbage is loosened and turned over, and the forward transported garbage is in full contact with the air to realize the complete combustion of the garbage. The existing problems are as follows: First, in order to ensure the residence time of the garbage in the furnace, the design of the grate area is relatively large, or the design of the grate stroke is relatively large, which increases the height or length of the incinerator and increases the cost; The movement direction of the garbage material layer is the same. When the garbage material layer is high, the relative drop of adjacent grates is low or the relative stroke is small, the running garbage is almost in a relatively static state, the effect of stirring and mixing is poor, and the garbage is not fully dried. , Incomplete combustion, low combustion efficiency, and difficult to reach the index of thermal ignition reduction rate of ash. Third, at the same time, the leachate in the garbage layer will be pushed forward by the grate before it evaporates, which will increase the drying time of the garbage. If the leachate is not collected in time, it will all evaporate into water vapor in the furnace, increasing the moisture in the flue gas. content, which affects the incineration process; the delay of ignition and combustion of garbage increases the residence time of garbage in the entire furnace, which has a greater impact on the incineration process. Fourth, the incineration process implements a periodic intermittent control method for the motion control of the grate, that is, the grate stops after a certain period of time and then moves again. For domestic waste with high water content and complex components in my country, the time of stopping and moving changes relatively quickly. Large, the adjustment of process parameters is more frequent, the incineration process parameters of the incinerator used in different regions need to be adjusted, and the control must also be adjusted accordingly. Fifth, the periodic intermittent control method makes the grate stop for a part of the time. If the time is too long, the lower position of the material layer is easy to burn the grate, and the higher position of the material layer is not dry enough, it is difficult to burn, and the stop time If it is too short, the residence time in the furnace cannot be guaranteed, and the combustion efficiency is low, which will make it difficult to reach the index of ash slag thermal ignition reduction rate. Sixth, if the garbage incineration grate has too many segments, the complexity of the mechanism will be increased, the high failure rate will be higher, and the cost will be higher, which puts higher requirements on the algorithm of the control system;

In addition, there is a two-stage grate incinerator in the furnace body. The front section close to the hopper is a downward-sloping reverse-push grate; the rear section close to the slag remover is a forward-push grate. The inclined reverse pushes the drying and burning stage, and the horizontal pushes forward the burning stage. The height difference between the two stages is used to realize the loosening and turning of the waste material layer, and the forward transported waste is fully in contact with the air to realize the complete combustion of the waste. The existing problems are as follows: First, for the characteristics of high water content and complex composition of domestic waste in our country, the reverse push grate has a weak conveying capacity for this type of waste, especially in the garbage drying stage, and there is a problem of full reverse push grate Problem; second, in the forward-push combustion stage, the garbage is basically burned into ash, most of which are small-sized ash, and as the combustion stage proceeds, the ash content increases until it reaches ash. The index of slag thermal ignition loss rate, that is, the ash and slag transported by the horizontal push grate movement is very small, and it is easy to enter the lower primary air chamber through the grate gap or the primary air hole, resulting in a large amount of ash output from this air chamber. It is not conducive to the centralized collection and treatment of ash; third, dust enters the movement mechanism part of the primary air chamber, causing greater wear and tear on the movement pair, affecting the normal operation of the mechanism, and forming ash collection on the fixed plate or fixed beam, affecting the primary air flow. It penetrates the material layer and enters the furnace to assist the burning and embers of garbage.

To sum up, the typical reciprocating grate waste incinerators each have their own advantages, but the problems and deficiencies that need to be solved in practical applications in our country:

1. For the high water content and complex composition of domestic waste in my country, reverse the grate’s ability to transport waste, especially in the dry stage, and the waste material layer is easy to form agglomerates or blocks, which are pasted on the grate surface, affecting drying Conveyance of process and waste;

2. In the reverse push grate drying stage, the bottom garbage will stick to the grate surface locally, blocking the primary air hole on the grate, prolonging the drying time and increasing the residence time of the garbage in the entire furnace, which directly affects the incineration process in the furnace;

3. Due to the continuous feeding of the pusher into the furnace, the upper layer of garbage is squeezed forward during the drying stage, and the lower layer of garbage is conveyed relatively slowly, resulting in a large difference in the movement speed of the upper layer and the lower layer of garbage;

4. In order to ensure the residence time of the garbage in the furnace, the area of the grate is designed to be larger, or the stroke of the grate is designed to be larger, which increases the height or length of the incinerator and increases the cost;

5. The forward push grate moves in the same direction as the garbage material layer. When the garbage material layer is high, the relative drop between adjacent grates is low or the relative stroke is small, the running garbage is almost in a relatively static state, stirring and mixing The effect is poor, the garbage is not dried enough, can not be fully burned, the combustion efficiency is low, and it is difficult to reach the index of the thermal ignition reduction rate of ash;

6. The leachate in the garbage layer will be pushed forward by the forward grate before it evaporates, which will increase the drying time of the garbage. If the leachate is not collected in time, the residence time of the garbage in the entire furnace will be increased, and all of it will be in the furnace Evaporate into water vapor, increase the moisture content in the flue gas, and affect the incineration process;

7. The motion control of the forward push grate implements a periodic intermittent control method. For domestic waste with high water content and complex composition in my country, the time of rest and movement changes greatly, and the adjustment of process parameters is frequent. This incinerator is used in different regions The parameters of the incineration process need to be adjusted, and the control must also be adjusted accordingly.

8. The periodic intermittent control method makes the grate stop for a part of the time. If the time is too long, the lower position of the material layer is easy to burn the fire grate, and the higher position of the material layer is not dry enough, it is difficult to burn, and the stop time is too long If it is short, the residence time in the furnace cannot be guaranteed, and the combustion efficiency is low, which will make it difficult to reach the index of ash slag thermal ignition reduction rate.

9. If the waste incineration grate is divided into too many sections, the complexity of the mechanism will be increased, the high failure rate will be higher, and the cost will be higher, which puts higher requirements on the algorithm of the control system;

10. In the forward-push combustion stage, the garbage is basically burned into ash, most of which are small-sized ash, and as the combustion stage progresses, the ash content increases until it reaches the hot burning of ash The indicator of the reduction rate, that is, the ash and slag transported by the horizontal push grate movement is very small in size, and it is easy to enter the primary air chamber below through the grate gap or the primary air hole, resulting in a large amount of ash output from this air chamber, which is not conducive to ash Centralized collection and treatment of slag;

Dust enters the moving mechanism part of the primary air chamber, causing greater wear and tear on the moving pair, affecting the normal operation of the mechanism, and forming dust collection on the fixed plate or fixed beam, affecting the penetration of the primary air through the material layer, entering the furnace, and assisting garbage Burn, embers.

Contents of the invention

The technical problem to be solved by the present invention is to provide a two-stage garbage incinerator to realize full drying, complete combustion and embers of the entire garbage material layer, so as to ensure the garbage incineration effect and thermal ignition reduction rate.

The technical scheme of the present invention is as follows: a two-stage garbage incinerator, including a furnace body, a pusher, a primary air chamber, side beams, fixed beams, fixed grate pieces, movable beams and movable grate pieces, wherein the bottom of the furnace body A slag removal port is provided at the tail, a feeding bin and a flue gas outlet are respectively provided at the front and rear of the top of the furnace body, a pushing platform is arranged below the feeding bin, and a pushing device is arranged above the pushing platform; The fixed beam installed on the side beam passes through the slots at the end of the same row of fixed grate pieces to form a fixed fire grate plate, and the movable beam installed on the pull rod passes through the slots at the tail of the same row of movable grate pieces to form a The movable grate plate, the movable grate plate overlaps the fixed grate plate front and back, and is arranged alternately to form a grate, and a primary air hole is opened at the head of the grate plate, the key of which is:

A. The fire grate is divided into two sections from high to low, the upper section is the forward push section, and the lower section is the reverse push section. The heads of the grate pieces on the forward push section are all facing the low point of the fire grate The heads of the grate slices on the reverse push section are all facing the direction of the high point of the grate;

B. The movable crossbeam of the same grate section is equipped with left and right pull rods arranged side by side. The left and right pull rods are supported by roller devices. The left and right pull rods are connected with the movable crossbeam to form a pull rod frame. The part is connected with the front rocker arm drive mechanism or the side rocker arm drive mechanism or the front direct drive mechanism;

C. An independent primary air chamber is provided below the forward thrust section and the reverse thrust section, and the primary air chamber is in the shape of a trumpet with a large top and a small bottom;

D. A secondary air supply port is provided on the front and rear arches of the furnace body, and an ignition and combustion-supporting hole is opened on the rear arch of the furnace body;

E. There is a wedge-shaped groove between the side beam and the outer steel skin of the furnace body and between the pushing platform and the outer steel skin of the furnace body. The wedge-shaped groove is filled with refractory sealing filler, and the wedge-shaped groove The notch is sealed by a "U"-shaped or corrugated cushioning thermal expansion pressure plate.

Combining the three stages of drying, burning and embers experienced by the garbage on the grate, the present invention designs an independent two-stage grate composed of the drying section grate, the burning and embers section grate, and the two sections have independent The driving mechanism is convenient for each section to control the residence time of the material layer, so as to realize the mobile process control of the entire garbage material layer, continuously stir and mix, improve the mixing and disturbance of garbage and air, assist drying and combustion, and ensure the reliability and safety of garbage transportation. Incineration process effect. According to the different capacity of the grate system in the incinerator to transport garbage, single row, double (two) row, three row, four row... grate system can be set up to form a serialized two-stage garbage incinerator. Among them, for small cities or "satellite" cities around large cities, small incinerators composed of single or double (two) grate systems and other equipment can be used, combined with small incinerator process control, to effectively realize waste incineration Treatment, to achieve reduction and resource utilization, this kind of incinerator is called "low-level" grate incinerator. For large and medium-sized cities, large-scale incinerators composed of three-column, four-column... grate systems and other equipment can be used. Also combined with the process control of large-scale incinerators, the incineration of waste can be effectively realized, reducing the amount and saving resources. , known as "higher-order" grate incinerators. Through the application of different incinerators in different urban areas, the existing phenomenon of garbage surrounding cities and towns can be solved, a large amount of domestic garbage generated by urban residents can be processed every day, and garbage that has been landfilled in the past can also be taken out for incineration, reducing The occupation of cultivated land and the waste of resources are reduced and resourced, and the sustainable development of man and nature is satisfied in the long-term operation.

The large drop at the end of the pushing platform is connected to the front end of the grate in the drying section to ensure that the garbage can fall on the grate in the forward-push drying section and be fully dispersed. For the grate in the drying section, in order to ensure the garbage delivery effect of the grate and the full mixing and stirring of the garbage, and to prevent the garbage from drying and burning, the grate delivery effect is not good, agglomeration, agglomeration, etc., the whole adopts the forward push type, the grate head The bottom of the grate is towards the lower end of the entire grate; for the combustion and embers, the entire grate adopts a reverse push form, and the head of the grate slices faces the high end of the entire grate, which is beneficial to increase the control effect of the residence time of the garbage in the furnace and ensure that the garbage Fully mix and stir to ensure the reliability of garbage transportation in the combustion and ember section and the effect of the incineration process. The left and right tie rods of the forward push section and reverse push section are connected with the movable beam to form a frame, which has good structural strength and can ensure the synchronization of the movement of the movable grate plates in the same section of the grate; the tie rods are supported by the supporting roller device, which can reduce the The movement resistance of the pull rod enhances the reliability and stability of the grate system operation and improves the service life.

Independent primary air chambers are respectively set under the grate in the drying section, the fire grate in the combustion and embering sections. Control the air volume and air pressure of each air chamber. Combined with the location of the garbage in the drying section, combustion section, and embers section on the grate, auxiliary processes such as the position and angle of the secondary air supply are arranged on the furnace shell, and technical parameters such as the secondary air supply are independently controlled to achieve the entire waste material layer. The full drying, complete combustion, and embers ensure the effect of garbage incineration and the rate of thermal ignition reduction.

A pre-drying air chamber is arranged below the pushing platform, and a collecting port is arranged at the lower end of the pre-drying air chamber. air supply port. The tail gas after waste incineration treatment with waste heat is passed through the hot air supply port into the pre-drying air chamber and blown to the material pushing platform, and the garbage on the material pushing platform is preliminarily preheated and dried, and the preheated and dried garbage enters the incinerator The two-stage grate inside can shorten the drying time of garbage in the drying section, reduce the moisture content of garbage, and increase the calorific value of garbage incineration. The lower end of the pre-drying air chamber has the function of collecting the leachate leaked from the pushing platform, which is beneficial to the comprehensive treatment of the leachate. When the waste processing capacity remains unchanged, the length of the grate in the drying section can be shortened, or the primary air volume in the drying section can be reduced; the waste heat of the flue gas treated by the flue gas purification system can be fully utilized, and the heat of the system can be recycled to reduce additional energy consumption.

The angle between the inclined surface and the horizontal plane formed by the connecting line of the grate piece head of the forward push section is 0-18 °, and the angle between the moving surface of the movable grate piece of the forward push section and the horizontal plane is 0-60 °. The stroke of the grate piece is 200-400mm. Or, the angle between the inclined surface and the horizontal plane formed by the connecting line of the head of the grate piece in the forward push section is 18-30°, and the angle between the moving surface of the movable grate piece in the forward push section and the horizontal plane is 0-60°. The stroke of the movable grate piece is 400-500mm.

，根据不同城市区域垃圾特性的不同，可以选择小倾角或大倾角顺推形式。

采用0-18°的小倾角方式安装，适用于垃圾含水量较低的地区，并采用无头部结构形式错开布置，其中

时，炉排片背部倾角与水平面也成，称为“对度”顺推炉排。

采用18-30°的大倾角方式安装，适用于垃圾含水量较高的地区，采用有头部和无头部结构形式错开布置。其中倾角为

时，炉排片背部倾角与水平面成

，称为“零度”顺推炉排。干燥段顺推炉排行程采用大行程，行程范围为400-500mm；采用小行程，行程范围为200-400，大行程和小行程分别采用不同的控制速度、控制算法，实现垃圾在干燥段的混合、搅拌。通过对干燥段炉排总体倾角、头部结构形式、炉排片错开布置的集成组合，并结合行程和控制方式实现整个干燥段的工艺特性过程，保障干燥段运送垃圾的可靠性和焚烧工艺效果。 The angle between the inclined surface and the horizontal plane formed by the connection line of the head of the grate piece in the forward push section is the overall inclination angle of the forward push

, according to the different characteristics of garbage in different urban areas, you can choose a small inclination angle or a large inclination angle to push forward.

It is installed with a small inclination angle of 0-18°, which is suitable for areas with low water content of garbage, and is arranged in a staggered way without a head structure, of which

, the inclination angle of the back of the grate piece and the horizontal plane also become , known as "opposite degree" push grate.

It is installed with a large inclination angle of 18-30°, which is suitable for areas with high water content of garbage. It adopts staggered arrangement with head and headless structure. where the inclination is

, the inclination angle of the grate back is in line with the horizontal plane

, known as "zero" push grate. The stroke of the forward grate in the drying section adopts a large stroke with a stroke range of 400-500mm; a small stroke with a stroke range of 200-400mm. The large stroke and small stroke adopt different control speeds and control algorithms to realize the garbage in the drying section. Mix and stir. Through the integrated combination of the overall inclination angle of the drying section of the grate, the structure of the head, and the staggered arrangement of the grate pieces, combined with the stroke and control methods, the process of the process characteristics of the entire drying section can be realized to ensure the reliability of the garbage transportation in the drying section and the incineration process effect.

In order to further enhance the stirring effect on the garbage, fins are provided on the head of each grate piece in the forward section, and the fins on the heads of all the grate pieces in the forward section form a toothed matrix structure arranged horizontally.

The angle between the inclined surface and the horizontal plane formed by the connecting line of the grate head of the reverse push section is 20-35 °, and the angle between the movable grate piece moving surface and the horizontal plane of the reverse push section is 25-60 °. The stroke of the grate piece is 350-500mm. For the combustion and embering section, the whole grate adopts the reverse push mode, the head of the grate piece faces the high end of the whole grate, and the angle between the inclined surface formed by the connection line of the head of the grate piece in the reverse push section and the horizontal plane, that is, the overall inclination angle of the reverse push The grate stroke is 20-35°, and the grate stroke adopts a large stroke, with a stroke range of 350-500mm, which is beneficial to increase the control effect of the residence time of garbage in the furnace and ensure that the garbage is fully mixed and stirred to ensure the reliability of garbage transportation in the combustion and ember section. Sex and incineration process effect.

The head bosses of two adjacent grate pieces on the same fire grate plate in the reverse push section are misaligned in the horizontal direction, front and back, and the front ends of each fire grate piece are flush, and the heads of two adjacent fire grate pieces are set along the width direction. The primary air holes are also misaligned horizontally, front and rear. This can significantly disturb, cut and mix the garbage in the vertical and horizontal directions, and increase the instability of the garbage on the grate; at the same time, it is also conducive to the fixed connection between the grate pieces of the same row. The force is uniform, and each row of movable grate plates runs smoothly.

In order to simplify the structure, facilitate installation and layout, and further improve the stability and reliability of the reciprocating movement of the pull rod, the idler device is composed of an idler shaft and an idler bearing seat, and the two ends of the idler shaft are supported by the idler bearing seat. And the supporting roller shaft supports the corresponding pull rod, and guide wheels are arranged on both sides of the pull rod.

The above-mentioned forward push section and reverse push section are independently driven. The present invention mainly sets three types of drive mechanisms: side rocker drive, front rocker drive, and front straight drive, which can be used in any arrangement and combination. The front rocker arm drive mechanism is composed of a drive cylinder, a drive cylinder seat, a drive shaft, a drive bearing seat, a pull rod rocker arm, a connecting rod and a pull rod arm, wherein the drive cylinder body is hinged with the drive cylinder seat, and the piston rod of the drive cylinder is connected to the drive cylinder seat. The cylinder rocker arm of the drive shaft is connected, the ends of the drive shaft at both ends are supported by the drive bearing seat, and the pull rod rocker arms are arranged near the ends of the drive shaft, and each pull rod rocker arm is hinged with the pull rod arm through the connecting rod. The pull rod arm is connected with the corresponding pull rod frame. When the piston rod of the driving cylinder is stretched, the piston rod of the driving cylinder drives the drive shaft to rotate forward and backward at a certain angle. When the drive shaft rotates, the connecting rod connected to the rocker arm of the pull rod drives the pull rod arm, so that the pull rod frame drives the movable furnace. The row board reciprocates.

The side rocker arm drive mechanism is composed of a drive cylinder, a drive cylinder seat, a swing arm, a drive shaft, a drive bearing seat, a pull rod rocker arm and a connecting rod, wherein the drive cylinder body is hinged with the drive cylinder seat, and the piston rod of the drive cylinder is connected to the drive cylinder. One end of the swing arm is hinged, and the other end of the swing arm is connected to the end of the drive shaft. The two ends of the drive shaft are supported by the drive bearing seat. The rods are connected with the corresponding rod holders. When the piston rod of the drive oil cylinder stretches, the piston rod of the drive oil cylinder drives the drive shaft to rotate forward and reverse at a certain angle through the swing arm. Drive the movable grate plate to reciprocate.

The front direct drive mechanism is composed of a drive cylinder, a drive cylinder seat and a direct drive connecting rod, wherein the drive cylinder body is hinged to the drive cylinder seat, the piston rod of the drive cylinder is hinged to one end of the direct drive link, and the direct drive link The other end is connected with the corresponding rod frame. When the piston rod of the driving oil cylinder expands and contracts, the tie rod frame is directly driven by the direct drive connecting rod, so that the pull rod frame drives the movable grate plate to reciprocate.

The driving mechanism of the forward push section is at the forefront, that is, at the lower part of the incinerator pusher device, there are few installed equipments, and for waste with high water content, there will be more leachate, which is easy to corrode equipment parts, and it can be driven by the front rocker arm or the front straight drive , in order to better deal with the leachate problem and reduce corrosion of equipment components; for waste with low water content, there will be less leachate and less corrosion to equipment components. To enhance the compactness of the equipment, it can be driven by a side rocker arm. The grate in the reverse push section is the combustion section and the embers section. It is located in the high temperature zone and the temperature is relatively high. It is located in the middle and rear of the grate, and the installation space is also limited. Rocker drive.

To sum up, three types of driving mechanisms are combined and set, and three setting methods are preferred: one of the setting methods, the forward drive is at the forefront, and the front rocker drive is used; the reverse drive is on the side of the reverse push grate, using The side rocker drive form; the second setting method, the forward drive is at the forefront, and the front direct drive is adopted; the reverse drive is at the front end of the reverse push grate, and the front rocker drive is used; the third setting mode is the forward drive Both the side rocker drive and reverse thrust drive adopt the side rocker drive form, especially in the side rocker drive form of the reverse thrust combustion section and the burner grate drive mechanism, two sets of side rocker arm drives can also be arranged on the side of the reverse thrust grate. Or front rocker arm drive plus side rocker arm drive to enhance the operability of the grate process parameters. The above layout makes the grate system have an independent drive mechanism, which is convenient for each section to control the residence time of the material layer, so as to realize the mobile process control of the entire garbage material layer, continuously stir and mix, improve the mixing and disturbance of garbage and air, and assist drying. , Combustion, to ensure the reliability of garbage transportation and the effect of incineration process. As a series of two-stage waste incinerators, the above-mentioned single row and double (two) rows are suitable for the "low-level" grate system of small incinerators, and the driving form of forward push grate and reverse push grate can adopt side rocker drive, front rocker drive, front straight drive. Three-column, four-column...suitable for the "high-level" grate system of large incinerators. The drive mode of forward push grate adopts side rocker drive, front rocker drive, and front straight drive; reverse push grate drive can be used The front rocker drive and the front straight drive are adopted, but the side rocker drive can only be used for the two outermost rows of grates.

There is a height difference between the forward thrust section and the reverse thrust section, and the tail end of the forward thrust section is connected to the reverse thrust section through a refractory transition platform or an intermediate grate. After conveying through the forward drying section, the drop will further disperse, mix, and roll the garbage material layer, cutting off the continuity of the garbage layer on the entire grate surface, which is conducive to sufficient drying and improved combustion effect, and is suitable for high water content. Garbage that is quite different in characteristics from garbage.

In order to simplify the structure and facilitate processing and installation, the tie rods are straight or "Z" shaped; the fixed beams are "M" or "back" shaped.

Beneficial effects: the invention combines the process of three stages of drying, burning and burning on the fire grate when the waste enters the furnace through feeding, and designs a material pushing part, a two-stage fire grate system, and a primary air chamber. The domestic waste incinerator composed of the secondary air supply device is convenient for continuous and uniform feeding, two independent control of the moving speed of the garbage on the grate, independent control of the air volume, air pressure and secondary air supply of each air chamber and other technical parameters, And set the smoke detection sampling hole for analysis and detection, so as to realize the full drying, complete combustion and embers of the entire garbage material layer, and ensure the garbage incineration effect and thermal ignition reduction rate. At the same time, there are fewer spare parts and spare parts, good interchangeability of wearing parts, and low manufacturing and maintenance costs.

Description of drawings

Fig. 1 is the structural representation of embodiment 1.

Fig. 2 is a structural schematic diagram of the forward push section and the reverse push section grate in Fig. 1 .

Fig. 3 is the first structure schematic diagram of Fig. 2 B-B section.

Fig. 4 is the second structural schematic diagram of Fig. 2 B-B sectional view.

Fig. 5 is a schematic diagram of the third structure of Fig. 2 B-B section.

Fig. 6 is a C-C sectional view of Fig. 2 .

Fig. 7 is a D-D sectional view of Fig. 2 .

FIG. 8 is a sectional view along line E-E of FIG. 2 .

Fig. 9 is a schematic diagram of connection between forward and reverse push section fire grates using a refractory transition platform in Example 1.

FIG. 10 is a schematic diagram of the installation of the "U"-shaped buffer thermal expansion pressure plate in Embodiment 1.

FIG. 11 is a schematic diagram of the installation of the corrugated heat-expansion buffer plate in Embodiment 1. FIG.

FIG. 12 is a schematic structural diagram of Embodiment 2.

FIG. 13 is a schematic structural diagram of Embodiment 3.

Fig. 14 is a schematic diagram of the present invention arranged in two rows of fire grates and driven by a side rocker arm.

Fig. 15 is a schematic diagram of the present invention arranged in two rows of fire grates and driven by a front rocker arm.

Fig. 16 is a schematic diagram of the present invention arranged as four rows of fire grates.

FIG. 17 is a schematic structural diagram of Embodiment 4.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

Example 1

As shown in Figure 1, there is a slag removal port 27a at the rear of the bottom end of the furnace body 27, a feed bin 27b at the front of the top of the furnace body 27, and a flue gas outlet 27c at the rear of the top of the furnace body 27. A flue gas through hole is provided on the upper part of the rear wall of the furnace body 27 close to the flue gas outlet, and the inner cavity of the furnace body 27 communicates with the flue gas monitoring device installed outside the furnace body through the flue gas through hole. The front and rear arches of the furnace body 27 are provided with a secondary air supply port 27e, and the secondary air supply device installed outside the furnace body communicates with the inner cavity of the furnace body 27 through the secondary air supply port 27e, and the furnace body 27 Also have ignition combustion-supporting hole 27f on the rear arch. A pusher platform 27d is set below the feed bin 27b, and a wedge-shaped groove is provided between the pusher platform 27d and the outer steel skin of the furnace body 27, and the wedge-shaped groove is filled with a refractory sealing filler 29, and the wedge-shaped groove The notch is sealed by a "U"-shaped thermal expansion buffer plate 31 (see Figure 10), or by a corrugated thermal expansion thermal expansion plate 32 (see Figure 11). One end of the buffer thermal expansion plate 31 or 32 is fixed to the side beam of the pushing platform 27d by bolts, and the other end is fixed to the outer steel skin of the furnace body 27 by bolts.

As can be seen from Fig. 1, a pusher 28 is installed above the pusher platform 27d. Feeding device with drying function, built-in feeding device, stepped drying and pushing device, recyclable leachate pushing device, pushing trolley with deviation protection, feeder with self-lubricating wheels, And the uniform material distribution device and the swing type material distribution device arranged on the upper part of the pushing device replace the feeding bin. The process effects achieved by different feeding devices are different, and can be set according to process requirements to ensure that the auxiliary feeding trolley can continuously and evenly reciprocate and feed materials into the furnace under the drive of the hydraulic cylinder. The uniform feeding of these devices makes the difference in the degree of looseness and density between the garbage smaller, which is conducive to achieving sufficient drying of the entire garbage material layer, stable and complete combustion, and is also conducive to the control of the combustion process.

It can also be known from Fig. 1 that a pre-drying air chamber 30 is arranged below the material pushing platform 27d, and the lower end of the pre-drying air chamber 30 is provided with a collecting port, and the upper end of the pre-drying air chamber 30 is a trumpet shape with a large upper part and a smaller lower part. A plurality of hot air supply openings 30a are opened on the trumpet-shaped side wall. The tail gas after waste incineration treatment with residual heat is passed into the pre-drying air chamber 30 through the hot air supply port 30a and blown to the pushing platform 27d, which can preheat and dry the garbage on the pushing platform to shorten the drying time of the garbage. time and reduce the water content of the garbage; the lower end of the pre-drying air chamber has the function of collecting the leachate leaked from the pushing platform, which is beneficial to the comprehensive treatment of the leachate.

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, and Fig. 5, the fire grate at the bottom behind the pushing platform 27d in the incinerator is divided into two sections from high to low, and the top section is the forward section 6, and the bottom section is The first section is the inverse section 7. An independent primary air chamber 26 is arranged below the forward thrust section 6 and the reverse thrust section 7 , and the primary air chamber 26 is in the shape of a trumpet with a large top and a small bottom. The number and structure of primary air chambers are set according to the requirements of the incineration process, and the range can be set to 4-6. Cities and regions with higher requirements for harmlessness, reduction, and recycling, that is, higher requirements for incineration technology, the more primary air chambers are installed. Guaranteed to meet the process requirements, the minimum number of air chambers is 4, which can meet the technical parameters such as primary air volume, air temperature, and air pressure; the number of air chambers reaches 6, which can better control the primary air parameters of the grate, and is more conducive to incineration The process can better realize the incineration effect of the entire garbage material layer. 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 grate boards overlap with the fixed grate boards front and back, and are arranged alternately to form a forward-moving grate. The heads of the fixed grate piece 3 and the movable grate piece 5 are all provided with primary air holes.

可以采用小倾角方式安装，为0-18°，炉排片采用无头部结构形式错开布置，适合含水量较高的垃圾产生地区，便于渗滤液的收集综合处理，无头部结构形式错开布置有利于垃圾在炉排面上的运动，也可在垃圾层下部形成不均匀空隙，提高干燥效率，缩短干燥时间。顺推段6活动炉排片运动面与水平面的夹角为0-60°，顺推段6活动炉排片的行程为200-400mm。

也可以采用大倾角方式安装，为18-30°，炉排片采用有头部和无头部结构形式错开布置，适合含水量较低的垃圾产生地区，便于垃圾在炉排面上扰动，缩短干燥时间，提高燃烧效率。相应地，顺推段6活动炉排片运动面与水平面的夹角为0-60°，顺推段6活动炉排片的行程为400-500mm。 It can be seen from Fig. 1 and Fig. 2 that the heads of the grate pieces on the forward section 6 are all facing the direction of the low point of the fire grate. The fins 20 at the heads of all the grate pieces form a toothed matrix structure arranged laterally. The angle between the inclined surface and the horizontal plane formed by the connecting line of the head of the 6 grate slices in the forward push section is the overall inclination angle of the forward push ,Should

It can be installed with a small inclination angle, which is 0-18°. The headless structure of the grate is arranged in a staggered manner, which is suitable for garbage production areas with high water content, and is convenient for the collection and comprehensive treatment of leachate. The headless structure is staggered and arranged. It is conducive to the movement of garbage on the grate surface, and can also form uneven gaps in the lower part of the garbage layer, which improves the drying efficiency and shortens the drying time. The included angle between the moving surface of the movable grate piece in the forward push section 6 and the horizontal plane is 0-60°, and the stroke of the movable grate piece in the forward push section 6 is 200-400mm.

It can also be installed with a large inclination angle of 18-30°. The grate pieces are arranged in a staggered structure with heads and without heads, which is suitable for garbage production areas with low water content, which is convenient for garbage to be disturbed on the grate surface and shortens the drying time. time and improve combustion efficiency. Correspondingly, the included angle between the moving surface of the moving grate piece in the forward pushing section 6 and the horizontal plane is 0-60°, and the stroke of the moving grate piece in the forward pushing section 6 is 400-500mm.

It can also be known from Fig. 1, Fig. 2, Fig. 3, Fig. 4, and Fig. 5 that the movable beam 4 of the forward push section grate is equipped with forward push and pull rods 24 arranged side by side on the left and right, and the forward push and pull rods 24 are linear or " Z " shape, the left and right forward push-pull rods 24 pass through the fixed crossbeam 2 and are driven by the front rocker arm drive mechanism. The left and right push-pull rods 24 are connected with the movable beam 4 to form a pull rod frame, and the left and right push-pull rods 24 are supported by at least two supporting roller devices. The idler device is composed of an idler shaft 8 and an idler bearing housing 9. The two ends of the idler shaft 8 are supported by the idler bearing housing 9. The idler bearing housing 9 can be set in the primary air chamber 26 or in Outside the primary air chamber 26. A "V"-shaped turning surface 8a is provided on the idler shaft 8 close to the idler bearing seat 9, and the "V"-shaped turning surface 8a supports the corresponding push-pull rod 24; or, the idler shaft 8 directly supports the push-pull The pull rod 24 is provided with guide wheels 10 on both sides of the push rod 24.

As can be seen from Fig. 1, Fig. 2 and Fig. 7, the front rocker arm drive mechanism is located at the front and lower part of the forward push section 6, and consists of a drive cylinder 11, a drive cylinder seat 12, a drive shaft 13, a drive bearing seat 14, a pull rod rocker arm 15, The connecting rod 16 and the pull rod arm 17 are formed, wherein the cylinder body of the drive cylinder 11 is hinged with the drive cylinder base 12, and the piston rod of the drive cylinder 11 is connected with the cylinder rocker arm of the drive shaft 13 through a hinge structure. Supported by the drive bearing seat 14, a pull rod rocker arm 15 is arranged near the end at the two ends of the drive shaft 13. Each pull rod rocker arm 15 is hinged with a pull rod arm 17 through a connecting rod 16. end connections.

It can be seen from Fig. 1, Fig. 2 and Fig. 8 that the reverse push section grate is composed of side beam 1, fixed beam 2, fixed grate piece 3, movable beam 4, movable grate piece 5, reverse push pull rod 25, supporting roller device and side Rocker arm drive mechanism. The fixed beam 2 passes through the slots at the end of the same row of fixed grate pieces 3 to form a fixed fire grate plate, and the end of the fixed beam 2 is fixed to the corresponding side beam 1; The card slot forms a movable grate plate. The movable grate boards overlap with the fixed grate boards front and back, and are arranged alternately to form a reverse thrust grate. A wedge-shaped groove is provided between the side beam 1 of the reverse push section fire grate and the forward push section fire grate and the outer steel skin of the furnace body 27, and the wedge-shaped groove is filled with refractory sealing filler 29, and the notch of the wedge-shaped groove It is sealed by a "U"-shaped thermal expansion buffer plate 31 (see FIG. 10 ), or by a corrugated thermal expansion thermal expansion plate 32 (see FIG. 11 ).

It can be seen from Fig. 1 and Fig. 2 that the heads of the grate segments on the inverse section 7 are all facing the direction of the high point of the grate. The angle between the inclined surface and the horizontal plane formed by the connecting line of the head of the 7 grate pieces in the reverse pushing section is 20-35 °, and the angle between the moving surface of the moving grate pieces of the 7 moving grate pieces in the reverse pushing section and the horizontal plane is 25-60 °. The stroke of the movable grate piece in section 7 is 350-500mm; the head bosses of two adjacent grate pieces on the same grate plate in the reverse push section 7 are dislocated in the horizontal direction, front and back, and the front ends of each fire grate piece are flush , so that the grate piece head bosses of the reverse push section fire grate form left and right, front and rear staggered arrangements, and the primary air holes 21 that each row of two adjacent fire grate piece heads offer along its width direction are also horizontally, front and back.

It can be seen from Fig. 1, Fig. 2, and Fig. 6 that the movable beam 4 of the grate in the reverse push section is equipped with reverse push pull rods 25 arranged side by side on the left and right. The reverse push rod 25 passes through the fixed beam 2 and is driven by the side rocker arm drive mechanism. The left and right reverse push-pull rods 25 are connected with the movable crossbeam 4 to form a rod frame, and the left and right reverse push-pull rods 25 are supported by a plurality of supporting roller devices. The structure and layout of the idler device are the same as those of the forward section, and will not be repeated here.

It can also be seen from Fig. 1, Fig. 2 and Fig. 6 that the side rocker arm driving mechanism is located under the front part of the reverse thrust section 7, and is composed of a driving cylinder 11, a driving cylinder seat 12, a swing arm 18, a driving shaft 13, and a driving bearing seat 14. , pull rod rocker arm 15 and connecting rod 16, wherein the cylinder body of drive cylinder 11 is hinged with drive cylinder seat 12, the piston rod of drive cylinder 11 is hinged with one end of swing arm 18, the other end of swing arm 18 is connected with drive shaft 13 The ends are connected, the two ends of the drive shaft 13 are supported by the drive bearing housing 14, and two pull rod rocker arms 15 are arranged side by side on the drive shaft 13, and each pull rod rocker arm 15 is connected to the end of the reverse push rod frame through the connecting rod 16. connect.

It can be seen from Fig. 1, Fig. 2 and Fig. 9 that a pressing device is provided at the head end of the forward thrust section 6 and the tail end of the reverse thrust section 7, and there is a height difference between the forward thrust section 6 and the reverse thrust section 7 , the tail end of the forward thrust section 6 is connected to the reverse thrust section 7 through a refractory transition platform 22 (see Figure 9), or, the tail end of the forward thrust section 6 is connected to the reverse thrust section 7 through an intermediate grate 23 (see Figure 1) .

Example 2

As shown in FIG. 12 , in this embodiment, the pull rod frame of the forward push section 6 is driven by the front rocker arm driving mechanism, and the pull rod frame of the reverse push section is driven by the front straight 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.

Example 3

As shown in Figure 13, 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 rods Each frame is 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.

Example 4

As shown in Figure 17, in this embodiment, the driving cylinders of the forward pushing section 6 and the reverse pushing section 7 are located below the pusher, and the rest of the structure of this embodiment is the same as that of Embodiment 1, and will not be repeated here.

According to the difference in the capacity of the grate system in the incinerator to transport garbage, a single-row grate system, a double (two) row grate system, a three-row, four-row... grate system can be set up to form a serialized two-stage garbage Incinerator. And the driving mode of the forward and reverse push sections of the grate system can freely choose the front rocker arm drive mechanism, the side rocker arm drive mechanism or the front straight drive mechanism according to needs. The double (two) row grate system shown in Figure 14 adopts the side rocker arm drive mechanism, the double (two) row grate system shown in Figure 15 uses the front rocker arm drive mechanism, and the four row grate system shown in Figure 16 The system adopts the front rocker arm drive mechanism.

The whole grate system takes the grate (fixed and movable) as the basic unit, adding fixed grate and movable grate staggered along the forward direction (longitudinal) of the garbage can increase the length of the single-row grate; similarly, along the incinerator The width of the single-row grate can be increased by adding fixed grate pieces and movable grate pieces correspondingly in the horizontal direction, and finally form a single-row independent two-stage waste incinerator composed of forward-push drying section grate and reverse-push combustion burn-out section grate. For double (two) rows and above grates, two adjacent rows of grates in the same section are connected by intermediate beams. According to the basic data of domestic waste (such as: moisture content, composition, etc.), change the length of the drying section of the fire grate, the length of the burning and burning fire section of the fire grate, and determine the width of the single row fire grate system, and then determine according to the total amount of waste to be incinerated The number of columns of the grate system. Each column in the drying section and the combustion and burnout section adopts an independent air chamber, and the air temperature and air pressure are independently controlled. The driving mechanism of each section of the grate system is arranged outside the air chamber and is in a normal temperature state, which can ensure the normal use of the seal and improve the service life, so as to ensure that the moving parts of the driving mechanism are well lubricated, and the movable grate plate fixed on the tie rod run smoothly. The spare parts and spare parts have few specifications, the wearing parts are interchangeable, and the manufacturing and maintenance costs of the grate system are low.

In summary, the present invention combines the position of the garbage in the drying section, combustion section, and embers section on the grate, and the processing capacity of the incinerator, and arranges auxiliary processes such as the position and angle of the secondary air supply and the secondary air outlet on the furnace shell. number. To increase the oxygen for the incineration of garbage on the grate, to ensure that the volatile matter in the furnace can undergo a relatively complete chemical reaction, to achieve the purpose of the incineration process, and to ensure that various chemical components in the flue gas can meet the emission requirements. The preheating device installed outside the furnace communicates with the furnace through the ignition and combustion-supporting hole. Under the action of the preheating device, it is beneficial to the oven and ignition before the garbage is incinerated. Set a flue gas detection sampling hole at the flue gas outlet of the incinerator to sample and analyze the flue gas at the outlet to obtain process parameters such as the composition, content, pressure, temperature and flow of the waste flue gas, and control the primary air, secondary air, desulfurization system, The incineration process such as the main induced air system is convenient for the stable and full combustion control of the garbage in the incinerator.

The invention combines the process of three stages of drying, burning and embers on the grate when the garbage enters the furnace through feeding, and designs a material pushing part, a two-stage grate system, a primary air chamber and a secondary air chamber. The domestic waste incinerator composed of air supply device is convenient for continuous and uniform feeding, two independent control of the moving speed of waste on the grate, independent control of air volume, air pressure and secondary air supply and other technical parameters of each air chamber, so as to realize the whole The full drying, complete combustion and embers of the garbage material layer can ensure the garbage incineration effect and thermal ignition reduction rate.

Claims (10)

1. A two-stage garbage incinerator, including a furnace body, a pusher, a primary air chamber, side beams, fixed beams, fixed grate pieces, movable beams and movable grate pieces, wherein the tail of the bottom end of the furnace body (27) is set The slag removal port (27a), the front and rear parts of the top of the furnace body (27) are respectively provided with a feeding bin (27b) and a flue gas outlet (27c), and a pushing platform is set under the feeding bin (27b) (27d), a pusher (28) is provided above the pushing platform (27d); the fixed beam (2) installed on the side beam (1) passes through the same row of fixed grate pieces (3) at the end The slot forms a fixed grate plate. The movable beam (4) installed on the tie rod passes through the slot at the end of the same row of movable grate pieces (5) to form a movable grate plate. The movable grate plate and the fixed grate plate The plates overlap front and back, and are arranged alternately to form a fire grate. There are primary air holes on the heads of the fixed fire grate and the movable fire grate, which are characterized in that: A. The grate is divided into two sections from high to low, the upper section is the forward pushing section (6), the lower section is the reverse pushing section (7), and the grate head on the forward pushing section (6) The head of the grate piece on the reverse push section (7) is all facing the direction of the high point of the grate; B. The movable beam (4) of the same section of fire grate is equipped with left and right pull rods arranged side by side. The left and right pull rods are supported by roller devices, and the left and right pull rods are connected with the movable beam (4) to form a pull rod frame. The end of the tie rod frame is connected with the front rocker arm drive mechanism or the side rocker arm drive mechanism or the front direct drive mechanism; C. An independent primary air chamber (26) is provided below the forward pushing section (6) and the reverse pushing section (7), and the primary air chamber (26) is in the shape of a trumpet with a large top and a small bottom; D. A secondary air supply port (27e) is provided on the front and rear arches of the furnace body (27), and an ignition and combustion-supporting hole (27f) is opened on the rear arch of the furnace body (27); E. There is a wedge-shaped groove between the side beam (1) and the outer steel skin of the furnace body (27) and between the pushing platform (27d) and the outer steel skin of the furnace body (27). The groove is filled with refractory sealing packing (29), and the notch of the wedge-shaped groove is sealed by a "U"-shaped or corrugated buffer thermal expansion pressure plate. 2. The two-stage garbage incinerator according to claim 1, characterized in that: a pre-drying air chamber (30) is provided under the pushing platform (27d), and the pre-drying air chamber (30) A collection port is arranged at the lower end, and the upper end of the pre-drying air chamber (30) is in the shape of a trumpet with a large top and a small bottom, and a hot air supply port (30a) is provided on the side wall of the trumpet. 3. The two-stage garbage incinerator according to claim 1, characterized in that: the angle between the inclined surface and the horizontal plane formed by the connecting line of the grate head of the forward push section (6) is 0-18°, The included angle between the moving surface of the movable grate piece in the forward push section (6) and the horizontal plane is 0-60°, and the stroke of the movable grate piece in the forward push section (6) is 200-400mm. 4. The two-stage garbage incinerator according to claim 1, characterized in that: the angle between the inclined surface and the horizontal plane formed by the connecting line of the grate head of the forward pushing section (6) is 18-30°, The included angle between the moving surface of the movable grate piece in the forward push section (6) and the horizontal plane is 0-60°, and the stroke of the movable grate piece in the forward push section (6) is 400-500mm. 5. The two-stage garbage incinerator according to claim 2, 3 or 4, characterized in that: fins (20) are provided at the head of each grate piece in the forward push section (6), and the forward push The fins (20) on the heads of all the grate pieces in the section (6) form a toothed matrix structure arranged horizontally. 6. The two-stage garbage incinerator according to claim 5, characterized in that: the angle between the inclined surface formed by the connecting line of the grate head of the reverse push section (7) and the horizontal plane is 20-35°, The angle between the moving surface of the movable grate piece in the reverse push section (7) and the horizontal plane is 25-60°, and the stroke of the movable grate piece in the reverse push section (7) is 350-500mm; the same row of fire grate in the reverse push section (7) The head bosses of two adjacent grate pieces on the board are misaligned in the horizontal direction, front and back, and the front ends of each row of fire grate pieces are flush, and the primary air holes (21) opened along the width direction of the two adjacent fire grate pieces are also Horizontal, front and rear are misaligned. 7. The two-stage garbage incinerator according to claim 1, characterized in that: the idler device is composed of an idler shaft (8) and an idler bearing housing (9), and the two idler shafts (8) The end is supported by the idler bearing housing (9), and the idler shaft (8) supports the corresponding pull rod, and guide wheels (10) are arranged on both sides of the pull rod. 8. The two-stage garbage incinerator according to claim 1, characterized in that: the front rocker arm drive mechanism consists of a drive cylinder (11), a drive cylinder seat (12), a drive shaft (13), and a drive bearing seat (14), pull rod rocker arm (15), connecting rod (16) and pull rod arm (17), wherein the cylinder body of the drive cylinder (11) is hinged with the drive cylinder seat (12), and the piston rod of the drive cylinder (11) is connected to The cylinder rocker arm of the drive shaft (13) is connected, and the ends of the drive shaft (13) are supported by the drive bearing housing (14), and a pull rod rocker arm (15) is set at the two ends of the drive shaft (13) close to the end , each tie rod rocker arm (15) is hinged to the tie rod arm (17) through the connecting rod (16), and the tie rod arm (17) is connected to the corresponding tie rod frame; The side rocker arm drive mechanism consists of a drive cylinder (11), a drive cylinder seat (12), a swing arm (18), a drive shaft (13), a drive bearing seat (14), a pull rod rocker arm (15) and a connecting rod ( 16) Composition, wherein the drive cylinder (11) cylinder body is hinged with the drive cylinder seat (12), the piston rod of the drive cylinder (11) is hinged with one end of the swing arm (18), and the other end of the swing arm (18) is hinged with the drive shaft The ends of (13) are connected, the two ends of the drive shaft (13) are supported by the drive bearing housing (14), and two pull rod rocker arms (15) are arranged side by side on the drive shaft (13), each pull rod rocker arm ( 15) Connect with the corresponding pull rod frame through the connecting rod (16); The front direct drive mechanism is composed of a drive cylinder (11), a drive cylinder base (12) and a direct drive connecting rod (19), wherein the cylinder body of the drive cylinder (11) is hinged to the drive cylinder base (12), and the drive cylinder (11 ) is hinged to one end of the direct drive connecting rod (19), and the other end of the direct drive connecting rod (19) is connected to the corresponding pull rod frame. 9. The two-stage garbage incinerator according to claim 1, characterized in that: there is a height difference between the forward pushing section (6) and the reverse pushing section (7), and the tail end of the forward pushing section (6) It connects with the reverse thrust section (7) through the refractory transition platform (22) or the middle grate (23). 10. The two-stage garbage incinerator according to claim 1, characterized in that: the tie rod is straight or "Z" shaped; the fixed beam (2) is "M" or "back" shaped.

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