WO2018032724A1

WO2018032724A1 - Large-scale domestic waste incineration grate furnace

Info

Publication number: WO2018032724A1
Application number: PCT/CN2017/070882
Authority: WO
Inventors: 盛庆伟; 丁孝荣; 陈竹; 李军; 何志刚
Original assignee: 南通天蓝环保能源成套设备有限公司
Priority date: 2016-08-17
Filing date: 2017-01-11
Publication date: 2018-02-22
Also published as: CN106196077B; CN106196077A

Abstract

A large-scale domestic waste incineration grate furnace relates to the field of waste incineration equipment, and comprises a drying grate (1), a combustion grate (2), and a burnout grate (3) which are arranged in a stepwise manner. The drying grate (1), the combustion grate (2), and the burnout grate (3) employ the same modular structure, and each include a grate supporting frame (4). Lateral frames (5) are symmetrically disposed on two sides of the grate supporting frame (4). The grate supporting frame between the lateral frames is provided with a plurality of modular incineration grate units (6) in a stepwise arrangement. The grate supporting frame (4), the lateral frames (5), and the modular incineration grate units (6) belonging to each of the drying grate (1), the combustion grate (2), and the burnout grate (3) all adopt a modular design. The domestic waste processing capacity of the incineration units may be modified by changing the number of the modular units. Each of the modular units can be operated independently, and the size of the structure thereof may be adjusted and modified according to actual needs.

Description

Large-scale domestic waste incinerator

Technical field

The invention relates to the field of waste incineration equipment, in particular to a large domestic waste incinerator furnace.

Background technique

Waste incineration treatment has the advantages of reduced amount, harmless effect, waste heat resource utilization, reducing secondary pollution, etc., which meets the requirements of China's rapid economic sustainable development strategy. At present, China's municipal waste incineration treatment mainly uses grate type incineration. Furnace and grate type incinerators are available in various forms, and their applications account for more than 80% of the total waste incineration market in the world.

At present, the daily processing capacity of domestic domestic waste incinerators is mainly between 100 tons and 500 tons. When dealing with domestic high-moisture and low-calorie domestic waste, there is a widespread problem of insufficient combustion of the waste in the furnace. In the process of introducing foreign technology and re-innovation, if the design is improper, there will be problems such as uneven distribution of heat load, local over-temperature and high-temperature corrosion.

The main problems and shortcomings of the existing domestic waste incinerators are:

1. At present, domestic waste incinerators (more than 600 tons per day) are basically imported equipment from abroad. The technical level of domestic independent research and development and production of large-scale incinerators is relatively lacking, but with the continuous development of urbanization in China The increasing density of urban population has determined that the development of large-scale domestic waste incinerators will become the mainstream trend.

2. The mechanical structure of the mechanical grate incinerator is complex, using many materials, and the production and production cycle is long. If mechanical failure occurs during equipment operation, equipment maintenance and parts replacement are difficult.

Summary of the invention

The object of the present invention is to provide a new type of large-scale domestic waste incinerator furnace with a high degree of modularization and a simple structure in view of the problems and deficiencies in the prior art, and the daily disposal capacity of the large-scale incinerator furnace can be as high as possible. More than 600 tons.

The technical solution for achieving the above object is: a large-scale domestic waste incinerator furnace, comprising a stepped arrangement of a drying section grate, a combustion section grate and a burnout section grate, characterized in that: a drying section grate, burning The segment grate and the burnout grate are of the same modular structure, respectively comprising a grate support frame, the side frames of the grate support frame are symmetrically arranged with side frames, and the grate support frame between the side frames is arranged A modular incinerator row unit in a stepped arrangement.

Further, the modular incinerator row unit comprises two rows of fixed grate main brackets arranged in a front-rear step, the two rows of fixed grate main brackets respectively passing through a front wall panel on the front side and a rear wall on the rear side The plate is mounted on the grate support frame, and the front wall panel and the rear wall panel are simultaneously fixedly connected to the side frames on both sides, and the front and rear rows are fixed to the grate The main support is respectively slidably arranged with a movable grate frame, and the movable grate racks on the main rows of the front and rear fixed rows of grate are connected by a connecting rod;

The fixed grate main bracket is provided with a plurality of fixed grate connecting pipes, and the fixed grate connecting pipe is provided with a fixed grate piece through the first grate row connecting seat, and a plurality of movable grate pieces are respectively connected on the movable grate rack. The movable grate piece is installed on the connecting tube of the movable grate piece through the second grate row connecting seat, and the fixed grate piece and the movable grate piece are alternately arranged from the back to the front, and are arranged in a step.

Further, the modular incinerator grate unit further includes a drive mechanism for driving the reciprocating motion of the movable grate frame, the drive mechanism including a main drive shaft, a link mechanism, a hydraulic cylinder, and a main body mounted on the rear movable grate frame a connecting pipe, the two ends of the main drive shaft are respectively mounted on the grate support frame through the support assembly, the crank and the first ear plate are fixedly connected on the main drive shaft, and the second ear plate is connected to the main connecting pipe, and the second ear plate is connected The connecting rod mechanism is connected with the first ear plate, and the hydraulic rod end of the hydraulic cylinder is connected with the crank, and the tail end of the hydraulic cylinder is connected to the rear wall plate corresponding to the main bracket of the rear row fixing the grate.

Further, the support assembly includes a bearing seat, and the bearing housing is internally provided with a self-lubricating bearing, the main transmission shaft is supported in the bearing housing, and a sealing ring is disposed between the two ends of the bearing housing and the main transmission shaft and the first The sealing cover and the outer port of the bearing housing are provided with a second sealing cover.

Further, the connecting rod comprises a screw and two connecting ends, and the connecting end is respectively connected with the central wall panel on the front and rear movable grate racks; the screw is respectively screwed with the two connecting ends, and the two connecting ends are connected with A lock nut is disposed between the screws.

The beneficial effects of the invention:

1. The drying section grate, the combustion section grate and the grate support frame of the burnout grate, the side frame and the modular incinerator grate unit are all modularized, and the incineration unit can be changed by changing the number of modular units. Domestic garbage disposal capacity, each modular unit has independent operation capability, and its structure size can be adjusted according to actual needs.

2. The movable furnace racks on the main rows of the fixed rows of the front and rear rows of the present invention have strong synchronization, stable operation and high safety, and ensure that the garbage in the garbage incineration equipment can be burned at the maximum calorific value.

3. The invention can realize the synchronous movement of the movable grate racks on the main rows of the fixed rows of the front and rear rows through a set of driving mechanisms, thereby saving energy and ensuring stable and efficient operation of the equipment.

4. The movable grate frame on the main rows of the fixed row of the same incineration section of the same incineration section maintains a good synchronous movement, so that the tumbling, agitation and lateral movement of the garbage in the same incineration section are consistent.

5. The modular incinerator grate unit is supported on the grate support frame, so that the entire incineration system has strong stability.

DRAWINGS

Figure 1 is a schematic view of the structure of the present invention;

2 is a schematic structural view of a grate of a drying section, a grate of a combustion section, and a grate of a burnout section;

Figure 3 is a schematic structural view of a grate support frame;

Figure 4 is a plan view of Figure 3;

Figure 5 is a schematic structural view of a side frame;

Figure 6 is a side view of Figure 5;

Figure 7 is a schematic structural view of a modular incinerator grate unit;

Figure 8 is a schematic view showing the structure of two rows of fixed grate main frames;

Figure 9 is a plan view of Figure 8;

Figure 10 is a schematic structural view of a movable furnace rack;

Figure 11 is a plan view of Figure 10;

Figure 12 is a cross-sectional view taken along line A-A of Figure 11;

Figure 13 is a schematic structural view of a connecting rod;

Figure 14 is a schematic view showing the structure of the support assembly.

detailed description

As shown in Figures 1 and 2, the present invention comprises a stepped arrangement of a drying section grate 1, a combustion section grate 2 and a burnout section grate 3, a drying section grate 1, a combustion section grate 2 and a burnout section The grate 3 adopts the same modular structure, respectively including a grate support frame 4, and the side frames 5 are symmetrically disposed on both sides of the grate support frame 4, and the grate support frame 4 between the side frames 5 is provided with a plurality of steps A modular incinerator row unit 6 is arranged.

As shown in FIGS. 3 and 4, the grate support frame 4 includes a square frame surrounded by an upper baffle plate 44, a lower brace plate 45, and a front baffle 46 made of a steel plate, and a front frame is provided on the front baffle plate. There is an inspection manhole 49, and both sides of the upper support steel plate 44 and the lower support steel plate 45 are provided with inclined steel plate supports 48, and the left end of the upper support steel plate 44 is connected with the front baffle 46 and the rear baffle 47. The reinforcing steel plate 51 is connected between the right end of the upper support steel plate 44 and the front baffle 46 and the tailgate 47.

The side frame 5 is a conventional structure, and the structure thereof will be briefly described below. As shown in FIGS. 5 and 6, the side frame 5 includes a bottom supporting steel plate 52, and the bottom supporting steel plate 52 is connected with a first bending steel plate 53, A gap adjusting plate 57 is disposed on the inner side of the bent steel plate 53, and the gap adjusting plate 57 is connected to the first bending steel plate 53 through a plurality of connecting pipes 58, and a second bending steel plate 54 is further connected to the first bending steel plate 53. A plurality of cooling and cooling air interfaces 55 and an inspection and maintenance observation port 56 are evenly distributed on the outer side of the second bending steel plate 54.

As shown in FIG. 7-13, the modular incinerator grate unit 6 includes two rows of fixed grate main supports 7 arranged in front and rear steps, and the two rows of fixed grate main frames 7 respectively include four spaced grate support plates 13 respectively. Two rows of fixed grate main brackets 7 are respectively mounted on the grate support frame 4 through the front wall panel 9 on the front side and the rear wall panel 10 on the rear side, and both ends of the front wall panel 9 and the rear wall panel 10 are simultaneously They are also respectively connected to the side frames 5 on the corresponding side, and the two rows of fixed grate main brackets 7 are respectively mounted with a guide assembly mount 11 and a support wheel frame 12.

The movable grate racks 8 are respectively slidably mounted on the two rows of fixed grate main supports 7, and the movable grate racks 8 respectively comprise two spaced-apart side wall panels 15 which are arranged at intervals between the two side wall panels 15 The central wall panel 16, the two side wall panels 15 and the two central wall panels 16 are parallel to each other, and the bottoms of the two side wall panels 15 are respectively connected with the guide assembly mounting seats 11 on the fixed grate main bracket 7. The wear plate 18, the lower ends of the two central wall panels 16 are connected to a guide assembly 17 corresponding to the support wheel frame 12 on the fixed grate main support 7.

The central wall panels 16 of the movable grate racks 14 correspondingly disposed on the two rows of fixed grate main brackets 7 are integrally connected by a connecting rod 19, and the connecting rod 19 includes a screw 20 and two connecting ends 21, respectively. The two connecting ends 21 are screwed. By adjusting the threaded connection length of the screw 20 and the two connecting ends 21, the length of the connecting rod 19 can be adjusted to meet the length requirements of different occasions. The two connecting ends 21 and A lock nut 22 is disposed between the screws 20, and the lock nut 22 is screwed to the screw 20.

Below the wear plate 18 at the bottom of the two side wall panels 15 of the movable grate rack 8, a rolling support assembly 23 is provided correspondingly to the rolling engagement of the wear plate 18, and the rolling support assembly 23 is mounted on the corresponding fixed grate main frame 7. The guide assembly mounting seat 11; the guide assemblies 17 at the lower ends of the two central wall panels 16 are cooperatively supported on the support wheel frame 12 corresponding to the fixed grate main frame 7.

The two rows of fixed grate main brackets 7 are uniformly provided with a plurality of fixed grate piece connecting pipes 24, and the fixed grate piece connecting pipes 24 are fixed with the grate pieces 26 through the first grate row connecting seat 25; the movable grate racks 8 respectively A plurality of movable grate piece connecting pipes 27 are installed, and the movable grate piece connecting pipe 27 is connected with the movable grate piece 29 through the second grate piece 28 connecting seat, and the fixed grate piece 28 and the movable grate piece 29 are alternately arranged from the back to the front, and It is arranged in a staircase.

The modular incinerator grate unit 6 further includes a drive mechanism 30 for driving the reciprocating movement of the movable grate frame 8. The drive mechanism 30 can be named: a domestic waste incinerator active grate support system (patent number: 201520472682.6) The structure disclosed in the patent document specifically includes a main drive shaft 31, a link mechanism 32, a hydraulic cylinder 33, and a main body connecting pipe 34 mounted on the rear movable grate frame 8, and both ends of the main drive shaft 31 respectively pass through the support assembly 35 is mounted on the grate support frame 4, and the crank 36 and the first ear plate 37 are fixedly connected to the main drive shaft 31, and the second ear plate 38 is connected to the main body connecting pipe 34, and the second ear plate 38 passes through the link mechanism 32. Connected to the first ear plate 37, the hydraulic rod end of the hydraulic cylinder 33 is connected to the crank 36, and the rear end of the hydraulic cylinder 33 is connected to the rear wall panel 10 corresponding to the rear row fixed main row bracket 7.

As shown in FIG. 14, the support assembly 35 includes a bearing housing 39. The bearing housing 39 is fitted with a self-lubricating bearing 40. The main transmission shaft 31 is supported in the bearing housing 39. Both ends of the bearing housing 39 and the main transmission shaft 31 are provided. A sealing ring 41 and a first sealing cover 42 are disposed therebetween, and the outer port of the bearing housing 39 is provided with a second sealing cover 43.

Claims

A large domestic waste incinerator furnace, comprising a stepped arrangement of a drying section grate, a combustion section grate and a burnout section grate, characterized by: a drying section grate, a combustion section grate and a burnout section furnace The rows adopt the same modular structure, respectively comprising a grate support frame, the side frames of the grate support frame are symmetrically arranged with side frames, and the grate support frame between the side frames is provided with a plurality of modular incinerations arranged in a stepped manner Grate unit.
A large domestic waste incinerator row furnace according to claim 1, wherein said modular incinerator row unit comprises two rows of fixed grate main supports arranged in front and rear steps, said two rows of fixed grate The main bracket is mounted on the grate support frame through the front wall panel on the front side and the rear wall panel on the rear side, and the front wall panel and the rear wall panel are simultaneously fixedly connected to the side frames on the two sides, and the front and rear rows are fixed. The movable grate frame is respectively slidably arranged on the main support of the grate, and the movable grate racks on the main support of the front and rear fixed rows of the grate are connected by a connecting rod;

The fixed grate main bracket is provided with a plurality of fixed grate connecting pipes, and the fixed grate connecting pipe is provided with a fixed grate piece through the first grate row connecting seat, and a plurality of movable grate pieces are respectively connected on the movable grate rack. a movable grate piece is installed on the connecting tube of the movable grate piece through the second furnace row piece connecting seat, and the fixed grate piece and the movable grate piece are alternately arranged from the back to the front, and are arranged in a step;

The modular incinerator grate unit also includes a drive mechanism that drives the reciprocating motion of the active grate rack.
A large domestic waste incinerator stove according to claim 2, wherein the driving mechanism comprises a main drive shaft, a link mechanism, a hydraulic cylinder and a main body connecting pipe installed on the rear movable grate frame, the main The two ends of the transmission shaft are respectively mounted on the grate support frame through the support assembly, the crank and the first ear plate are fixedly connected on the main drive shaft, the second ear plate is connected to the main body connection pipe, and the second ear plate passes through the link mechanism. Connected with the first ear plate, the hydraulic rod end of the hydraulic cylinder is connected with the crank, and the tail end of the hydraulic cylinder is connected to the rear wall plate corresponding to the main bracket of the rear row fixed to the grate.
A large domestic waste incinerator furnace according to claim 3, wherein the support assembly comprises a bearing seat, and a self-lubricating bearing is arranged in the bearing seat, and the main transmission shaft is supported in the bearing housing. A sealing ring and a first sealing cover are disposed between the two ends of the bearing housing and the main transmission shaft, and the outer sealing port of the bearing housing is provided with a second sealing cover.
A large domestic waste incinerator stove according to claim 3, wherein the connecting rod comprises a screw and two connecting ends, and the connecting ends are respectively connected with the central wall plate on the front and rear movable grate racks. The screw is respectively screwed to the two connecting ends, and a lock nut is respectively disposed between the two connecting ends and the screw.