Ash removal device for a waste incinerator

Abstract

The utility model discloses a kind of ash removal devices of waste incinerator, including furnace cover, furnace body, furnace bottom, the upper portion of furnace cover is fixedly connected with mounting bracket, the upper portion of mounting bracket is fixedly connected with motor, motor output end penetrates mounting bracket and furnace cover and is fixedly connected with rotating shaft, the lower portion of rotating shaft is fixedly connected with connecting plate, the lower portion of both ends of connecting plate is fixedly connected with connecting rod, the outer side of connecting rod is fixedly connected with several groups of outer sliding rod, inner sliding rod is slidably connected in the inside of outer sliding rod, the side of inner sliding rod is fixedly connected with scraper, the other side of inner sliding rod is fixedly connected with connecting piece, spring is fixedly connected between the inner wall of connecting piece and outer sliding rod, spring is sleeved in the outer side of inner sliding rod, further guaranteeing dust cleaning effect.

Description

Technical Field

[0001] This utility model relates to the technical field of waste incineration equipment, specifically to an ash removal device for a waste incinerator. Background Technology

[0002] During waste incineration, the inner wall of the incinerator easily accumulates ash due to the adhesion of dust and coke residue from the high-temperature flue gas. If this ash accumulates for a long time, it not only reduces the furnace's thermal conductivity (leading to a drop in incineration temperature and incomplete waste combustion), but may also cause ash detachment and blockage of the flue, leading to equipment malfunctions. Furthermore, harmful components in the ash (such as heavy metals and dioxin adsorbents) will increase the difficulty of subsequent flue gas treatment if not cleaned promptly. Existing ash removal devices for waste incinerators have the following technical defects, limiting ash removal efficiency and maintenance effectiveness: Incomplete ash removal and high residue rate: Traditional ash removal devices often use rigid, fixed scrapers that cannot accommodate minor irregularities on the furnace wall (such as wear on furnace bricks after combustion or protrusions formed by coke residue adhesion). This easily leaves gaps during ash removal, resulting in a high ash residue rate. Furthermore, after prolonged use, coke residue easily adheres to the scraper surface, further reducing the ash removal effect and requiring frequent shutdowns for adjustment. Integrated furnace design makes disassembly and assembly difficult: Most incinerators have an integral welded structure, and the ash removal device cannot be separated from the furnace body. Collecting accumulated ash requires manual cleaning by inserting tools through the furnace opening, resulting in limited operating space and incomplete ash collection. Cleaning scrapers or replacing damaged parts may even require disassembling the furnace shell, with each maintenance session taking several hours and severely impacting the continuous operation of the incineration line. Utility Model Content

[0003] The purpose of this invention is to provide an ash removal device for a waste incinerator to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an ash removal device for a waste incinerator, comprising a furnace cover, a furnace body, and a furnace bottom. A mounting frame is fixedly connected to the upper part of the furnace cover. A motor is fixedly connected to the upper part of the mounting frame. A rotating shaft is fixedly connected to the output end of the motor, penetrating the mounting frame and the furnace cover. A connecting plate is fixedly connected to the lower part of the rotating shaft. Connecting rods are fixedly connected to the lower parts of both ends of the connecting plate. Several sets of outer sliding rods are fixedly connected to the outer sides of the connecting rods. Inner sliding rods are slidably connected inside the outer sliding rods. A scraper is fixedly connected to one side of the inner sliding rod, and a connecting piece is fixedly connected to the other side of the inner sliding rod. A spring is fixedly connected between the connecting piece and the inner wall of the outer sliding rod, and the spring is sleeved on the outer side of the inner sliding rod.

[0005] Preferably, a number of support rods are fixedly connected to the lower part of the furnace bottom, and a limit ring is fixedly connected to the upper part of the support rod, with the limit rings on both sides of the connecting rod.

[0006] Preferably, the furnace cover and the furnace body, and the furnace body and the furnace bottom are fixedly connected by mating flanges.

[0007] Preferably, rotating rods are rotatably connected to both sides of the furnace bottom, and lifting blocks are fixedly connected to the other end of the rotating rods. Several sets of mounting plates are fixedly connected to the outer side of the furnace body. A base plate is fixedly connected to the lower part of the mounting plate. A lifting rod is fixedly connected between the base plate and one side mounting plate. The lifting rod is slidably connected to the inside of one side lifting block. A threaded rod is rotatably connected between the base plate and the other side mounting plate. The threaded rod is threadedly connected to the inside of the other side lifting block.

[0008] Preferably, an air inlet pipe is fixedly connected to one side of the upper part of the furnace body, and an air outlet pipe is fixedly connected to the other side of the lower part of the furnace body.

[0009] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model utilizes a motor-driven rotating scraper and a spring elastic compensation structure, allowing the scraper to closely adhere to the inner wall of the furnace. Even if there are minor irregularities in the inner wall, the scraper can adapt to fit by extending and retracting the inner sliding rod, effectively removing attached ash and slag. This avoids the ash-cleaning gaps of traditional rigid scrapers and reduces ash residue. At the same time, the anti-stick coating on the scraper surface reduces slag adhesion, further ensuring the ash-cleaning effect. 2. This utility model also adopts a split flange connection of "furnace cover, furnace body, and furnace bottom", combined with a lifting and adjusting structure. Rotating the threaded rod can drive the furnace bottom to descend smoothly along the lifting rod. After loosening the flange bolts, the furnace cover, furnace body, or furnace bottom can be disassembled separately. When disassembling the furnace bottom, the bottom sealing cover can be opened directly to collect the accumulated ash. There is sufficient operating space and the ash is collected thoroughly. When disassembling the furnace cover, the ash removal component can be taken out as a whole without disassembling the furnace shell, which greatly improves the convenience of maintenance. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural cross-sectional view of the present invention; Figure 3 This is an enlarged view of the structure at point A of this utility model.

[0011] In the diagram: 1. Furnace cover; 2. Furnace body; 3. Furnace bottom; 4. Mounting bracket; 5. Motor; 6. Rotating shaft; 7. Connecting plate; 8. Connecting rod; 9. Outer sliding rod; 10. Inner sliding rod; 11. Scraper; 12. Connecting piece; 13. Spring; 14. Support rod; 15. Limiting ring; 16. Flange; 17. Rotating rod; 18. Lifting block; 19. Lifting rod; 20. Mounting plate; 21. Base plate; 22. Threaded rod; 23. Air inlet pipe; 24. Air outlet pipe. Detailed Implementation

[0012] 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.

[0013] Please see Figure 1-3 This utility model provides a technical solution: an ash removal device for a waste incinerator, including a furnace cover 1, a furnace body 2, and a furnace bottom 3. A mounting frame 4 is bolted to the upper part of the furnace cover 1. A motor 5 is bolted to the upper part of the mounting frame 4. The output end of the motor 5 penetrates the mounting frame 4 and the furnace cover 1, and is then fixedly connected to a rotating shaft 6 via a flexible coupling. The surface of the rotating shaft 6 is coated with a high-temperature resistant ceramic coating to prevent corrosion and wear. A connecting plate 7 is welded to the lower part of the rotating shaft 6. Connecting rods 8 are bolted to the lower ends of both ends of the connecting plate 7. Several sets of external sliding rods 9 are evenly welded to the outer sides of the connecting rods 8 along the axial direction. The internal sliding rods 9 have internal sliding... An inner sliding rod 10 is dynamically connected. A scraper 11 is bolted to the side of the inner sliding rod 10 away from the outer sliding rod 9. The scraper 11 is made of wear-resistant alloy steel plate with rounded corners at the end in contact with the inner wall of the furnace to avoid scratching the furnace bricks. The surface of the scraper 11 is coated with polytetrafluoroethylene to prevent coke residue from sticking. A connecting piece 12 is welded to the side of the inner sliding rod 10 near the outer sliding rod 9. A spring 13 is spot-welded to the connecting piece 12 and the inner wall of the outer sliding rod 9. Under normal conditions, the spring 13 pushes the inner sliding rod 10 outward so that the scraper 11 is in close contact with the inner wall of the furnace to achieve elastic compensation. The spring 13 is sleeved on the outside of the inner sliding rod 10 to prevent the spring 13 from shifting or getting stuck. Several sets of support rods 14 are uniformly welded and fixedly connected to the lower part of the furnace bottom 3 along the circumference. Limiting rings 15 are fixedly connected to the upper part of the support rods 14 by welding to limit the radial displacement of the connecting rods 8 when rotating, and to ensure that the scraper 11 fits evenly against the inner wall of the furnace. The limiting rings 15 are symmetrically arranged on both sides of the connecting rods 8 to form bidirectional limiting. The furnace cover 1 and the furnace body 2, and the furnace body 2 and the furnace bottom 3 are all fixedly connected by bolts with mating flanges 16. The flanges 16 have built-in high-temperature resistant graphite sealing rings to prevent flue gas leakage. Rotating rods 17 are rotatably connected to both sides of the furnace bottom 3 via deep groove ball bearings. A lifting block 18 is fixedly connected to the end of the rotating rod 17 away from the furnace bottom 3 by welding. Several sets of mounting plates 20 are evenly fixedly connected to the outer side of the furnace body 2 by welding. A bottom plate 21 is fixedly connected to the lower part of the mounting plate 20 by welding. A lifting rod 19 is fixedly connected between the bottom plate 21 and the mounting plate 20 by welding. The lifting rod 19 is slidably connected to the inside of one side of the lifting block 18. A threaded rod 22 is rotatably connected between the bottom plate 21 and the mounting plate 20 via a thrust ball bearing. The threaded rod 22 is threadedly connected to the inside of the other side of the lifting block 18. An adjusting handwheel is welded to the top of the threaded rod 22 for easy manual operation. An air inlet pipe 23 is connected to the upper side of the furnace body 2 via a flange. The air inlet pipe 23 is connected to the waste combustion chamber. An air outlet pipe 24 is connected to the lower side of the furnace body 2 via a flange. The air outlet pipe 24 is connected to the rapid cooling acid removal tower for subsequent treatment.

[0014] Working principle: When this utility model is in use, the motor 5 is started, and the output end of the motor 5 drives the rotating shaft 6 to rotate. The rotating shaft 6 drives the two sets of connecting rods 8 to rotate synchronously through the connecting plate 7. The connecting rods 8 drive the outer sliding rod 9, the inner sliding rod 10 and the scraper 11 to move in a circular motion along the inner wall of the furnace body 2. During the ash removal process, if the scraper 11 encounters a protrusion or slag on the inner wall of the furnace, the inner sliding rod 10 will retract inward along the outer sliding rod 9, compressing the spring 13. The elastic force of the spring 13 continuously pushes the scraper 11 to stick tightly to the inner wall of the furnace, ensuring that there is no gap in ash removal. The accumulated ash is scraped off by the scraper 11 to the bottom of the furnace 3. After the ash removal is completed, turn off the motor 5, close the air valve of the air inlet pipe 23 and the flue gas valve of the air outlet pipe 24, and wait for the furnace body to cool down to room temperature and the internal pressure to drop to normal pressure; rotate the adjusting handwheel of the threaded rod 22, the threaded rod 22 drives the lifting block 18 on one side to move downward along the lifting rod 19, the lifting block 18 drives the furnace bottom 3 to descend smoothly through the rotating rod 17 until the furnace bottom 3 separates from the flange 16 of the furnace body 2, rotate the furnace bottom 3 by rotating the rotating rod 17, and pour the accumulated ash inside into a special collection container to complete the ash collection; Loosen the flange bolts between the furnace cover 1 and the furnace body 2, lift the furnace cover 1 together with the mounting bracket 4, motor 5 and ash removal assembly, unscrew the bolts connecting the scraper 11 and the inner sliding rod 10, remove the scraper 11, and clean the residual coke residue on the surface of the scraper 11 with a high-pressure water gun or wire brush. At the same time, clean the accumulated ash on the surface of the connecting rod 8 and the outer sliding rod 9, and check whether the spring 13 is deformed. If it is deformed, replace it.

[0015] 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.

[0016] 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 waste incinerator ash removal device, comprising a furnace cover (1), a furnace body (2), and a furnace bottom (3), characterized in that: A mounting bracket (4) is fixedly connected to the upper part of the furnace cover (1). A motor (5) is fixedly connected to the upper part of the mounting bracket (4). A rotating shaft (6) is fixedly connected to the output end of the motor (5) through the mounting bracket (4) and the furnace cover (1). A connecting plate (7) is fixedly connected to the lower part of the rotating shaft (6). A connecting rod (8) is fixedly connected to the lower part of both ends of the connecting plate (7). Several sets of outer sliding rods (9) are fixedly connected to the outer side of the connecting rod (8). An inner sliding rod (10) is slidably connected inside the outer sliding rod (9). A scraper (11) is fixedly connected to one side of the inner sliding rod (10). A connecting piece (12) is fixedly connected to the other side of the inner sliding rod (10). A spring (13) is fixedly connected between the connecting piece (12) and the inner wall of the outer sliding rod (9). The spring (13) is sleeved on the outer side of the inner sliding rod (10).

2. The ash removal device for a waste incinerator according to claim 1, characterized in that: The furnace bottom (3) is fixedly connected to several sets of support rods (14), and the upper part of the support rods (14) is fixedly connected to limit rings (15). The limit rings (15) on both sides are set on both sides of the connecting rod (8).

3. The ash removal device for a waste incinerator according to claim 1, characterized in that: Flanges (16) are fixedly connected between the furnace cover (1) and the furnace body (2), and between the furnace body (2) and the furnace bottom (3).

4. The ash removal device for a waste incinerator according to claim 3, characterized in that: Rotating rods (17) are rotatably connected to both sides of the furnace bottom (3). A lifting block (18) is fixedly connected to the other end of the rotating rods (17). Several sets of mounting plates (20) are fixedly connected to the outside of the furnace body (2). A base plate (21) is fixedly connected to the lower part of the mounting plate (20). A lifting rod (19) is fixedly connected between the base plate (21) and the mounting plate (20) on one side. The lifting rod (19) is slidably connected to the inside of the lifting block (18) on one side. A threaded rod (22) is rotatably connected between the base plate (21) and the mounting plate (20) on the other side. The threaded rod (22) is threadedly connected to the inside of the lifting block (18) on the other side.

5. The ash removal device for a waste incinerator according to claim 2, characterized in that: An air inlet pipe (23) is fixedly connected to one side of the upper part of the furnace body (2), and an air outlet pipe (24) is fixedly connected to the other side of the lower part of the furnace body (2).

Images