Garbage incinerator anti-slagging structure based on CFD numerical simulation
By adopting CFD numerical simulation design and a combination of multiple structures in the waste incinerator, the problem of slag condensation in the inner wall of the incinerator is solved, achieving more efficient slag prevention and extension of equipment life.
Patent Information
- Application Number
- CN202421501009.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-06-28
AI Technical Summary
When designing anti-slag structures for existing waste incinerators, the commonly used method is to clean up later, which cannot achieve early prevention, resulting in slag phenomenon still exists.
Using a design method based on CFD numerical simulation, combining the round table structure, inclined inner wall, multiple intake pipes, spoiler vibration mechanism and metal hitting ball, the anti-slag-condensation of the inner wall of the incinerator is achieved by improving air flow, increasing oxygen uniformity and promoting the drop of dust and impurities.
It effectively improves the anti-slag capacity of the incinerator, extends the service life of the equipment, and reduces operating costs.
Smart Images
Figure CN222864939U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of incinerators, in particular to a slagging prevention structure of a garbage incinerator based on CFD numerical simulation. Background Art
[0002] The anti-slagging structure of the garbage incinerator based on CFD numerical simulation refers to the use of computational fluid dynamics technology to design, analyze and optimize the internal structure of the garbage incinerator to reduce or prevent the occurrence of slagging. This method combines advanced numerical simulation technology and engineering practice to improve the operating efficiency and life of the incinerator.
[0003] For garbage incinerators based on CFD numerical simulation, how to design an effective anti-slagging structure requires multiple design and operation judgments on the incinerator. The more common method is to design a corresponding cleaning structure in the furnace, that is, to perform contact scraping treatment on the inner wall of the furnace, that is, to pre-design a scraping structure, and then cooperate with CFD numerical simulation calculation to judge the operation of the designed structure. However, the premise of using the cleaning structure in the furnace is that the inner wall of the furnace has already slagging, which belongs to the subsequent treatment work and cannot achieve the early prevention effect;
[0004] Therefore, in view of the above-mentioned problems, the present technical solution proposes an anti-slagging structure of a waste incinerator based on CFD numerical simulation. Utility Model Content
[0005] The utility model aims to provide a waste incinerator anti-slagging structure based on CFD numerical simulation to solve the problems raised in the above background technology.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a slagging prevention structure of a garbage incinerator based on CFD numerical simulation, comprising an incinerator, a control box, and an incineration device; a group of feeding bases are installed on the top of the incinerator, and a circular inlet and outlet are opened inside the feeding base, and the garbage to be incinerated is input into the incinerator along the inlet and outlet for incineration, and the smoke is discharged during the incineration inside the incinerator, and the incineration device is arranged at the bottom of the incinerator, and the operation of the incineration device directly heats and incinerates the garbage inside the incinerator, and a control box is arranged inside the bottom of the incinerator, and the operation of the entire incinerator is controlled by operating the control box, and the incinerator is arranged as a truncated cone structure, and the inner wall of the incinerator is set to an inclined state to increase the difficulty of dust and impurities adhering to the inner wall of the incinerator, and the side wall of the incinerator is opened. A plurality of air inlet ducts are provided, through which air is input into the incinerator to increase the oxygen content and improve the adequacy of garbage incineration. A soundproof shell is provided at the lower part of the side wall of one side of the incinerator to output the incinerated garbage. At the same time, a turbulent vibration mechanism is rotatably arranged on the upper middle part of the incinerator. The turbulent vibration mechanism rotates to stir the air flow inside the incinerator, thereby improving the uniformity of oxygen distribution inside the incinerator, and the turbulent vibration mechanism intermittently strikes and contacts the wall of the incinerator to drive the wall of the incinerator to vibrate, thereby reducing the slagging of dust and impurities on the inner wall of the incinerator. That is, the internal structure of the incinerator is utilized, gravity is utilized to increase the difficulty of slagging, a turbulent vibration mechanism is provided to expand the oxygen uniformity and improve the degree of incineration, and striking and vibrating are performed to promote falling. A variety of methods are coordinated to fully improve the anti-slagging ability.
[0007] Compared with the prior art, the beneficial effects of the utility model are: by setting the incinerator as a truncated cone structure, the difficulty of waste slag sticking to the inner wall of the incinerator is increased by utilizing the inclined side walls, the fluidity of the air inside the incinerator is improved by arranging a paddle, and the adequacy of incineration is improved, and by arranging a metal knocking ball to intermittently vibrate with the inner wall of the incinerator, the falling of garbage stuck to the inner wall of the incinerator is promoted, and through the coordination of the above-mentioned structures, the anti-slag strength of the design is fully improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 This is a schematic diagram of the structure of an anti-slagging structure for a waste incinerator based on CFD numerical simulation.
[0009] Figure 2 This is a schematic diagram of the top view of the feeding base in the anti-slagging structure of a waste incinerator based on CFD numerical simulation.
[0010] Figure 3 This is a structural schematic diagram of a turbulent vibration mechanism in an anti-slagging structure of a waste incinerator based on CFD numerical simulation.
[0011] Figure 4 for Figure 1 Schematic diagram of the enlarged structure of A.
[0012] Among them: incinerator 10, control box 11, incineration device 12, feed base 13, inlet and outlet 14, air intake pipe 15, sound insulation shell 16, servo motor 1 17, drive shaft 18, rotating rod 19, mounting plate 20, swing rod 21, dial plate 22, base cylinder 23, telescopic hole 24, metal knocking ball 25, discharge port 26, guide plate 27, servo motor 2 28, screw 29, nut 30, connecting rod 31, heat insulation board 32. DETAILED DESCRIPTION
[0013] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0014] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.
[0015] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.
[0016] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.
[0017] See also Figure 1-Figure 4A slagging prevention structure of a garbage incinerator based on CFD numerical simulation includes an incinerator 10, a control box 11, and an incineration device 12; a group of feeding bases 13 are installed on the top of the incinerator 10, and a circular inlet and outlet 14 is opened inside the feeding base 13. The garbage to be incinerated is input into the incinerator 10 along the inlet and outlet 14 for incineration, and the flue gas is discharged during the incineration in the incinerator 10. The incineration device 12 is arranged at the bottom of the incinerator 10. The operation of the incineration device 12 directly heats and incinerates the garbage inside the incinerator 10. At the same time, a control box 11 is arranged inside the bottom of the incinerator 10. The operation of the entire incinerator 10 is controlled by operating the control box 11. The incinerator 10 is arranged as a truncated cone structure. By setting the inner wall of the incinerator 10 to an inclined state, the difficulty of dust and impurities adhering to the inner wall of the incinerator 10 is increased. The side wall of the incinerator 10 is opened. There are multiple air intake pipes 15, through which air is input into the incinerator 10 to increase the oxygen content and improve the adequacy of garbage incineration. A soundproof shell 16 is opened at the lower part of the side wall of one side of the incinerator 10 to output the incinerated garbage. At the same time, a turbulent vibration mechanism is rotatably arranged on the upper middle side of the incinerator 10. The turbulent vibration mechanism rotates to stir the air flow inside the incinerator 10, thereby improving the uniformity of oxygen distribution inside the incinerator 10, and it intermittently knocks and contacts with the wall of the incinerator 10 to drive the wall of the incinerator 10 to vibrate, thereby reducing the slagging of dust and impurities on the inner wall of the incinerator 10, that is, the internal structure of the incinerator 10 is utilized, gravity is used to increase the difficulty of slagging, a turbulent vibration mechanism is arranged to expand the oxygen uniformity and improve the degree of incineration, and knocking and vibrating are used to promote falling. Multiple methods are coordinated to fully improve the anti-slagging ability.
[0018] In the embodiment of the present invention, the furnace wall of the incinerator 10 is made of high temperature resistant metal material. When it is struck by the turbulent vibration mechanism, it is subjected to force vibration without causing damage to the furnace wall of the incinerator 10. Since sound is generated when it is struck and vibrated, a soundproof shell 16 is installed on the outside of the incinerator 10 to reduce the outward expansion of noise; the outer ends of the air inlet pipe 15 and the discharge port 26 are extended to the outside of the soundproof shell 16;
[0019] In one embodiment of the present invention, the turbulent vibration mechanism includes a rotating rod 19 rotatably arranged in the middle of the incinerator 10, and a plurality of mounting plates 20 are installed at intervals on the rotating rod 19. A servo motor 17 is connected to the top of the rotating rod 19 through a driving shaft 18. The servo motor 17 is fixedly installed in the inner wall of the feeding base 13, that is, the servo motor 17 is started to drive the rotating rod 19 to rotate, thereby driving the mounting plate 20 to rotate;
[0020] A base cylinder 23 is fixedly installed on one side of the circumferential outer wall of the mounting plate 20, and a knocking assembly is electrically telescopically connected inside the base cylinder 23. The knocking assembly cyclically telescopes and contacts the inner wall of the incinerator 10 to knock and vibrate. The knocking assembly includes a telescopic hole 24 opened at the end of the base cylinder 23, and a knocking rod is telescopically connected inside the telescopic hole 24. A metal knocking ball 25 is installed at the outer end of the knocking rod. The metal knocking ball 25 contacts and knocks with the inner wall of the incinerator 10 intermittently, and a nut 30 is connected to the inner end of the knocking rod through a connecting rod 31. A lead screw 29 is threadedly connected to the middle part of the nut 30. The end of the lead screw 29 away from the telescopic hole 24 is connected to a servo motor 28 fixed inside the base cylinder 23. A guide device for limiting its rotation is provided on the nut 30. The servo motor 28 is started to drive the lead screw 29 to rotate, thereby driving the nut 30 to move back and forth along the lead screw 29, thereby driving the knocking rod to control the metal knocking ball 25 to intermittently knock with the inner wall of the incinerator 10.
[0021] In order to reduce the influence of external high temperature on the servo motor 28, a heat insulation board 32 is installed at the output shaft of the servo motor 28, and the heat insulation board 32 is used to block and reduce the damage of the external high temperature to the servo motor 28;
[0022] A plurality of radially distributed swinging rods 21 are evenly installed at other positions of the circumferential outer wall of the mounting plate 20, and a plurality of paddles 22 are evenly installed on the upper and lower sides of the incineration device 12. The rotation of the mounting plate 20 drives the paddles 22 to rotate synchronously, thereby driving the air inside the incinerator 10 to flow in the same direction, so that the air input along the air inlet pipe 15 is evenly distributed inside the incinerator 10, thereby maintaining the burning force of the garbage inside the incinerator 10;
[0023] Specifically, a guide plate 27 is provided on the inner bottom wall of the incinerator 10, and the bottom end of the guide plate 27 is connected to the discharge port 26, that is, the inclined structure of the guide plate 27 is used in conjunction with gravity to accelerate the output of the incinerated garbage.
[0024] It should be noted that the design of this structure is coordinated with CFD to simulate the operation of a waste incinerator under real conditions, thereby obtaining data to determine the use of this structural design.
[0025] The working principle of the utility model is: in the idle part of the device, all the driving parts mentioned above, which refer to the power elements, electrical components and the adapted power supply, are connected through wires, and the electrical connection is completed in a sequential working order between the electrical components. The detailed connection means are well-known technologies in the field. The following mainly introduces the working principle and process, and does not explain the electrical control. The control box 11 is connected to the CFD for operation, and then the control box 11 is operated to detect and calculate the CFD operation, and then the garbage is input into the incinerator 10 along the inlet and outlet 14. At this time, the air intake duct 15 is opened to transport air toward the inside of the incinerator 10, and the servo motor 17 is started to drive the rotating rod 19 to rotate, and the control plate 22 is controlled to rotate synchronously to drive the air flow inside the incinerator 10. At this time, the incineration device 12 is running to incinerate the garbage inside the incinerator 10, and then the servo motor 28 is started to control the nut 30 to move radially in a cycle, driving the metal knocking ball 25 to intermittently knock and vibrate with the inner wall of the incinerator 10, so as to fully prevent slagging on the inner wall of the incinerator 10, and then the incinerated garbage is discharged along the discharge port 26.
[0026] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.
Claims
1. A waste incinerator anti-slagging structure based on CFD numerical simulation, characterized in that: The invention comprises an incinerator (10), a control box (11), and an incineration device (12); a group of feed bases (13) are installed on the top of the incinerator (10); a ring-shaped inlet and outlet (14) are provided inside the feed base (13); the incineration device (12) is arranged at the bottom of the incinerator (10); a control box (11) is arranged inside the bottom of the incinerator (10); the incinerator (10) is arranged in a truncated cone structure; a plurality of air intake pipes (15) are provided on the side wall of the incinerator (10); a soundproof shell (16) is provided at the lower part of one side wall of the incinerator (10); and a turbulent vibration mechanism is rotatably provided at the upper middle part of the incinerator (10).
2. The anti-slagging structure of a garbage incinerator based on CFD numerical simulation according to claim 1 is characterized in that: The furnace wall of the incinerator (10) is made of high temperature resistant metal material.
3. The anti-slagging structure of a garbage incinerator based on CFD numerical simulation according to claim 2 is characterized in that: A soundproof shell (16) is installed outside the incinerator (10), and the outer ends of the air inlet pipe (15) and the discharge port (26) extend to the outside of the soundproof shell (16).
4. The anti-slagging structure of a garbage incinerator based on CFD numerical simulation according to claim 3 is characterized in that: The turbulent vibration mechanism comprises a rotating rod (19) rotatably arranged in the middle of the incinerator (10), a plurality of mounting plates (20) are installed at intervals on the rotating rod (19), and a servo motor (17) is connected to the top end of the rotating rod (19) via a driving shaft (18), and the servo motor (17) is fixedly installed in the inner wall of the feeding base (13).
5. The anti-slagging structure of a garbage incinerator based on CFD numerical simulation according to claim 4 is characterized in that: A base cylinder (23) is fixedly mounted on one side of the circumferential outer wall of the mounting plate (20), a knocking assembly is electrically and telescopically connected inside the base cylinder (23), the knocking assembly cyclically telescopes and contacts the inner wall of the incinerator (10) to knock and vibrate, the knocking assembly comprises a telescopic hole (24) provided at the end of the base cylinder (23), a knocking rod is telescopically connected inside the telescopic hole (24), a metal knocking ball (25) is mounted on the outer end of the knocking rod, the metal knocking ball (25) contacts and knocks the inner wall of the incinerator (10) intermittently, the inner end of the knocking rod is connected to a nut (30) through a connecting rod (31), a lead screw (29) is threadedly connected to the middle part of the nut (30), the end of the lead screw (29) away from the telescopic hole (24) is connected to a servo motor 2 (28) fixed inside the base cylinder (23), and a guide device for limiting the rotation of the lead screw (30) is provided on the nut (30).
6. The anti-slagging structure of a garbage incinerator based on CFD numerical simulation according to claim 5 is characterized in that: A plurality of radially distributed swinging rods (21) are evenly mounted at the remaining positions of the circumferential outer wall of the mounting plate (20), and a plurality of shifting plates (22) are evenly mounted on the upper and lower sides of the incineration device (12).