A two-burner chamber with built-in sedimentation dust removal structure

Abstract

The utility model belongs to solid waste centralized incineration and thermal cracking technical field, and disclose a two combustion chamber with settlement dust removal structure, including two combustion furnaces, the left side and the top of two combustion furnaces are equipped with air inlet hole and air outlet hole respectively, the bottom of two combustion furnaces is fixedly connected with collecting box, there is filter assembly in the position of the air inlet hole of two combustion furnaces, the inside of two combustion furnaces is increased baffle, and the baffle carries out adsorption to the dust generated in the inside of two combustion furnaces preliminarily, preliminarily carries out adsorption to big particle, avoids big particle to stay on the surface of baffle all the time, after preliminary filtration, gas is separated from airflow by the action of sedimentation force and its own weight, by the above scheme, the original dust in flue gas is not removed, and new dust may be generated in the incineration process, the original dust and newly generated dust are discharged from the air outlet together with flue gas and flow to the rear equipment.

Description

Technical Field

[0001] This utility model belongs to the field of centralized incineration and pyrolysis technology of solid waste, specifically a secondary combustion chamber with a self-contained settling and dust removal structure. Background Technology

[0002] Gravity settling is the simplest method of dust removal. Its principle is that when dust-laden gas enters the chamber, it is naturally settled by its own weight, thus separating from the airflow. It has a simple and inexpensive structure, consumes little energy, and is suitable for dust with high density and large particle size. It is widely used in the pretreatment devices of dust collectors.

[0003] Meanwhile, patent application number CN202122593024.0 discloses a secondary combustion chamber with a built-in settling dust removal structure, including a chamber body and a settling component. The settling component includes a processing chamber, an air inlet, a first ash-blocking wall, a second ash-blocking wall, an ash collection pit, and an air outlet. Multiple first ash-blocking walls and multiple second ash-blocking walls are alternately arranged, with the first and second ash-blocking walls partially overlapping on the side projection plane. The ash collection pit is funnel-shaped. This utility model, by setting up a chamber body and a settling component, can force the flue gas / gas to continuously change direction as it flows within the chamber body, making the flue gas flow fully turbulent and improving the dust settling effect.

[0004] However, during the implementation of the relevant technology, it was found that the original dust in the flue gas of the aforementioned secondary combustion chamber with a self-settling dust removal structure was not removed, and new dust may be generated during the combustion process. The original dust and the newly generated dust are discharged from the outlet along with the flue gas and flow to the downstream equipment. This will greatly increase the burden and consumption of the downstream fine dust removal equipment, and cause blockage and damage to the downstream flue gas treatment equipment, affecting the normal functioning of the entire flue gas treatment system. Utility Model Content

[0005] To address the problems mentioned in the background art, this utility model provides a secondary combustion chamber with a built-in settling dust removal structure. A baffle plate is added inside the secondary combustion furnace to initially adsorb the dust generated inside the furnace, particularly large particles, preventing them from remaining on the surface of the baffle plate. After initial filtration, the gas naturally settles due to its own weight, thus separating from the airflow. The structure is simple, inexpensive, and energy-efficient, making it suitable for dust with high density and coarse particle size.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a secondary combustion chamber with a self-contained settling and dust removal structure, comprising a secondary combustion furnace, wherein an air inlet and an air outlet are respectively provided on the left side and top of the secondary combustion furnace, a collection box is fixedly connected to the bottom of the secondary combustion furnace, and a filter assembly is fixedly connected in the inner cavity near the air inlet of the secondary combustion furnace. The filter assembly includes an air intake pipe, a fan is rotatably connected inside the air intake pipe, a top cover is slidably attached to the top of the air intake pipe, a handle is fixedly attached to the top of the top cover, a filter box is fixedly connected to the chamber of the air intake pipe, a filter screen is attached to the top of the filter box, a handle is fixedly attached to the top of the filter screen, and the filter box slides back and forth in the chamber of the air intake pipe.

[0007] Preferably, a support plate is fixedly connected to the chamber of the collection box, and a motor is fixedly connected to the top right side of the collection box. The output end of the motor passes through the inner wall of the collection box and is fixedly connected to a ground auger, which rotates inside the support plate.

[0008] Preferably, a collection hole is provided on the right side of the bottom of the collection box, and the collection hole is located at the end of the floor duct.

[0009] Preferably, the inner cavity of the second combustion furnace has three sets of outflow holes at the bottom, and the bottom of the outflow holes is fixedly connected to a valve, and the outer side is sleeved with a valve.

[0010] Preferably, the adjacent outflow holes are arranged at an inclination, and a vibration motor is fixedly connected to the inclination position at the bottom of the two combustion furnaces.

[0011] Preferably, a baffle plate is fixedly connected to the inner cavity of the second combustion furnace, and the baffle plate at the bottom end is disposed between adjacent outflow holes, and the baffle plate is arranged in an inclined shape.

[0012] Preferably, the three sets of ash discharge pipes penetrate the interior of the collection box, and the discharge hole at the bottom of the ash discharge pipe is located above the floor duct.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, by designing the air inlet with an outer diameter larger than the inner diameter, accelerates the inflow of external gas into the secondary combustion furnace. Several sets of baffles are added inside the secondary combustion furnace, causing the airflow to change direction multiple times, increasing the residence time of the flue gas to ensure dioxin decomposition. Simultaneously, it also separates large particles through impact. This design is compact, and an outlet hole is opened at the bottom of the secondary combustion furnace to discharge large particles, reducing the long-term retention of dust inside the furnace and preventing secondary agitation of particles due to eddies. 2. This utility model adds a device to the bottom of the two combustion furnaces to vibrate the dust on the surface of the baffle plates, preventing dust from remaining on the surface of the baffle plates for a long time and preventing the increase of dust particles on the surface of the baffle plates. As the roughness of the surface of the baffle plates increases, the gas movement speed slows down. When the particles inside the two combustion furnace fall into the support plate inside the collection box under the action of gravity, the motor is started to drive the ground dragon to rotate. During the rotation, the dust particles on the surface of the support plate are spirally transported and output, avoiding the need to frequently open the ash cleaning furnace of the two combustion furnace and reducing manual intervention. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a structural schematic diagram of the cross-sectional view of the second combustion furnace of this utility model; Figure 3 This is a schematic diagram of the structure of the filter assembly of this utility model; Figure 4 This is a schematic diagram of the structure of the collection box of this utility model; Figure 5 This is a schematic diagram of the valve structure of this utility model.

[0015] In the diagram: 1. Secondary combustion furnace; 2. Air inlet; 3. Air outlet; 4. Filter assembly; 41. Air inlet pipe; 42. Fan; 43. Filter box; 44. Filter screen; 45. Handle; 46. Top cover; 47. Grip; 5. Baffle plate; 6. Outlet hole; 7. Collection box; 71. Motor; 72. Ground duct; 73. Support plate; 74. Collection hole; 8. Ash discharge pipe; 9. Vibrator; 10. Valve. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figures 1 to 5 As shown, this utility model provides a secondary combustion chamber with a self-contained settling dust removal structure, including a secondary combustion furnace 1. An air inlet 2 and an air outlet 3 are respectively opened on the left side and the top of the secondary combustion furnace 1. A collection box 7 is fixedly connected to the bottom of the secondary combustion furnace 1. A filter assembly 4 is fixedly connected in the inner cavity near the air inlet 2 of the secondary combustion furnace 1. The filter assembly 4 includes an air inlet pipe 41, and a fan 42 is rotatably connected inside the air inlet pipe 41. The fan 42 rotates inside the air inlet pipe 41. During the rotation, a negative pressure is formed inside, and external gas is drawn into the air inlet pipe 41. When filtering dust for a long time, it is necessary to hold the handle 47 to open the top cover 46 from the surface of the air inlet pipe 41, and hold the filter screen 44 connected to the handle 45 to clean the filter screen 44. Smaller dust particles will continue to flow into the interior of the second combustion furnace 1 through the filter screen 44, and continue to clean the dust contained in the gas.

[0018] Specifically, a support plate 73 is fixedly connected to the chamber of the collection box 7, and a motor 71 is fixedly connected to the top right side of the collection box 7. The output end of the motor 71 passes through the inner wall of the collection box 7 and is fixedly connected to a ground auger 72. The ground auger 72 rotates inside the support plate 73, driving the dust to be discharged to the outside.

[0019] Furthermore, a collection hole 74 is provided on the bottom right side of the collection box 7. Dust inside the support plate 73 is rotated to one side of the support plate 73 by the ground auger 72 and falls off at the top of the collection hole 74.

[0020] Furthermore, the bottom of the inner cavity of the second combustion furnace 1 is provided with three sets of outflow holes 6. The bottom of the outflow holes 6 is fixedly connected to the ash discharge pipe 8. The outer side of the ash discharge pipe 8 is fitted with a valve 10. The valve 10 is used to control the opening and closing of the ash discharge pipe 8. When it is necessary to discharge the dust inside the ash discharge pipe 8, simply turn the valve 10 to achieve the connection state.

[0021] It is worth noting that an inclined protrusion is set at the bottom of the second combustion furnace 1 adjacent to the outlet hole 6 to place the vibrator 9. After the vibrator 9 is powered on, it generates vibration, which separates the dust remaining inside the second combustion furnace 1 and causes it to settle due to gravity.

[0022] It is worth noting that a baffle plate 5 is fixedly connected in the inner cavity of the second combustion furnace 1. The inertial impact of the baffle plate 5 produces sediment. The bottom baffle plate 5 is set between adjacent outlet holes 6. Dust falling from between the two sets of baffle plates 5 is discharged to the outside through the outlet holes 6. The baffle plate 5 is set in an inclined shape to prevent the dust entering the second combustion furnace 1 from adhering to the surface of the baffle plate 5. The vibrator 9 is used to vibrate the dust particles remaining on the surface of the baffle plate 5, causing them to fall off the surface of the baffle plate 5.

[0023] It is worth mentioning that three sets of ash discharge pipes 8 run through the interior of the collection box 7, and the discharge hole at the bottom of the ash discharge pipe 8 is located above the earthen ceiling 72. When a lot of dust accumulates, the three sets of valves 10 are opened simultaneously to facilitate the dust falling off.

[0024] Among them, motor 71 is existing technology and will not be described in detail; at the same time, this utility model also includes a power supply, controller and switch, etc., which are not the main technical points of this patent and will not be described in detail; the "front, back, left and right" perspectives of this device are as follows: Figure 1 The direction shown in the diagram is the reference.

[0025] Working principle: Unburned gas from the first combustion chamber flows into the interior of the second combustion furnace 1 through inlet 2. Particulate-laden gas enters upwards from the bottom of inlet pipe 41. Accelerated by the rotation of fan 42, the gas flows towards the top of inlet pipe 41, moving along its path. Upon reaching the top of inlet pipe 41, under gravity, the gas flows through filter screen 44 into filter box 43. Larger dust particles fall into filter box 43, while smaller dust particles fall downwards through the bottom of filter box 43 and exit downwards from the bottom of inlet pipe 41. The gas passes through the first... The obstruction of the baffle plate 5 and the second baffle plate 5 causes the airflow direction to change continuously. Due to the large weight of the dust in the flue gas, the dust will fall downwards. Some of the dust will collide with the first baffle plate 5 and the second baffle plate 5 inside the second combustion furnace 1 and will be trapped at the outlet hole 6 between the first baffle plate 5 and the second baffle plate 5 at the bottom of the second combustion furnace 1. The multiple sets of baffle plates 5 make the flue gas flow fully turbulent, improve the dust settling effect and fall into the ash discharge pipe 8. When there is a lot of dust accumulated inside the ash discharge pipe 8, the valve 10 can be opened to allow the dust to be discharged from the inside of the ash discharge pipe 8. As the gas continuously discharges from the three sets of ash discharge pipes 8, it falls into the internal support plate 73 of the collection box 7. The motor 71 is started, and the motor 71 drives the ground duct 72 to rotate inside the collection box 7. During the rotation, the ground duct 72 rotates the dust that falls into the support plate 73 and transmits it to the end of the ground duct 72, which falls from the bottom of the collection hole 74 on one side of the collection box 7. After completion, the dust is collected, and the air after heating and combustion is discharged through the air outlet 3 at the top of the second combustion furnace 1.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A secondary combustion chamber with a built-in settling dust removal structure, comprising a secondary combustion furnace (1), characterized in that: The second combustion furnace (1) has an air inlet (2) and an air outlet (3) on its left side and top, respectively. A collection box (7) is fixedly connected to the bottom of the second combustion furnace (1). A filter assembly (4) is fixedly connected in the inner cavity near the air inlet (2) of the second combustion furnace (1). The filter assembly (4) includes an air inlet pipe (41), a fan (42) is rotatably connected inside the air inlet pipe (41), a top cover (46) is slidably attached to the top of the air inlet pipe (41), a handle (47) is fixedly connected to the top of the top cover (46), a filter box (43) is fixedly connected to the chamber of the air inlet pipe (41), a filter screen (44) is attached to the top of the filter box (43), a handle (45) is fixedly connected to the top of the filter screen (44), and the filter box (43) slides back and forth in the chamber of the air inlet pipe (41). The chamber of the collection box (7) is fixedly connected to a support plate (73), and a motor (71) is fixedly connected to the top right side of the collection box (7). The output end of the motor (71) passes through the inner wall of the collection box (7) and is fixedly connected to a ground auger (72). The ground auger (72) rotates inside the support plate (73). The inner cavity of the second combustion furnace (1) is provided with three sets of outflow holes (6), and the bottom of the outflow holes (6) is fixedly connected to the ash discharge pipe (8), and the outer side of the ash discharge pipe (8) is fitted with a valve (10). The adjacent outlet holes (6) are arranged in an inclined position, and a vibrator (9) is fixedly connected to the inclined position at the bottom of the two combustion furnaces (1). A baffle plate (5) is fixedly connected in the inner cavity of the second combustion furnace (1). The baffle plate (5) at the bottom is arranged between adjacent outlet holes (6). The baffle plate (5) is arranged in an inclined shape.

2. The secondary combustion chamber with a self-contained settling dust removal structure according to claim 1, characterized in that: The bottom right side of the collection box (7) is provided with a collection hole (74), which is located at the end of the earth dragon (72).

3. The secondary combustion chamber with a self-contained settling dust removal structure according to claim 2, characterized in that: The three sets of ash discharge pipes (8) penetrate the interior of the collection box (7), and the discharge hole at the bottom of the ash discharge pipe (8) is located above the earthen duct (72).

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