Waste heat recovery structure

Abstract

This utility model discloses a waste heat recovery structure applied to an incinerator. A heat exchange tube is fixedly installed on one side of the incinerator, and a transition tube is fixedly connected to the end of the heat exchange tube. A sealing cap is fixedly connected to the heat exchange tube through the transition tube. A drive cylinder is fixedly installed on the outside of the sealing cap. A synchronization ring is slidably installed inside the heat exchange tube. A scraper ring is sleeved on the outer wall of the synchronization ring. A fixing plate and a linkage plate integrated with the fixing plate are fixedly installed at the bottom of the heat exchange tube. A waste discharge unit is provided inside the heat exchange tube. In this utility model, the annular synchronization ring is driven to slide along the heat exchange tube by four connecting rods. The scraper ring on the outer wall of the synchronization ring is in close contact with the inner wall of the heat exchange tube. During the sliding process, impurities attached to the inner wall can be directly scraped off, avoiding the accumulation of impurities and forming a blockage channel. This ensures that the high-temperature flue gas can always be in full contact with the heat exchange tube, maintain stable heat exchange efficiency, ensure effective recovery of waste heat resources, and solve the problem of heat exchange performance degradation caused by blockage in traditional devices.

Description

Technical Field

[0001] This utility model relates to the field of incinerator technology, and in particular to a waste heat recovery structure. Background Technology

[0002] In the field of municipal solid waste and industrial solid waste treatment, incinerators are the core equipment for achieving waste reduction and harmlessness. During the incineration process, a large amount of high-temperature flue gas is generated, which contains abundant waste heat resources. Although most incinerators are equipped with waste heat recovery devices, the following defects exist in actual applications: the incineration flue gas contains impurities such as fly ash and unburned carbon particles, which can easily lead to the accumulation of these substances on the inner wall of the heat exchange tubes and cause blockages over long-term operation; the heat exchange components of existing devices are mostly of integral design, which requires shutdown and disassembly for cleaning and maintenance, which not only affects the continuous operation of the incinerator, but also increases the operation and maintenance costs and workload. Therefore, we propose a waste heat recovery structure. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a waste heat recovery structure.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a waste heat recovery structure applied to an incinerator, wherein a heat exchange tube is fixedly installed on one side of the incinerator, a transition tube is fixedly connected to the end of the heat exchange tube, a sealing cover is fixedly connected to the heat exchange tube through the transition tube, a driving cylinder is fixedly installed on the outside of the sealing cover, a synchronization ring is slidably installed inside the heat exchange tube, a scraper ring is sleeved on the outer wall of the synchronization ring, a fixed plate and a linkage plate integrated with the fixed plate are fixedly installed at the bottom of the heat exchange tube, a waste discharge unit is provided inside the heat exchange tube, and a moving rod is provided on the linkage plate.

[0005] Preferably, the synchronization ring is circular, and the scraper ring is sleeved on the outer wall of the synchronization ring near the edge, with the outer wall of the scraper ring tightly fitted to the inner wall of the heat exchange tube.

[0006] Preferably, a retaining ring is sleeved on the outer wall of the synchronizing ring corresponding to the side of the scraper ring, and an inverted triangular extrusion member is fixedly installed at the bottom of the synchronizing ring, with one end of the extrusion member being fixedly connected to the side of the scraper ring.

[0007] Preferably, the inner wall of the synchronization ring is fixed with four connecting rods, and the piston rod of the drive cylinder slides into the heat exchange tube through the sealing cover, with the ends of the four connecting rods fixed to the outer wall of the piston rod.

[0008] Preferably, the waste discharge unit includes a sealing plate, a roller strip, an extension rod, a cylinder, and limiting plates. A waste trough is provided at one end of the bottom of the heat exchange tube. A sealing plate is slidably installed in the waste trough. A roller strip is fixedly connected to the top of the sealing plate. The top of the moving rod extends slidably beyond the top of the roller strip through the sealing plate. An extension rod is fixedly installed on the top of the moving rod. An inverted cylindrical cylinder is fixedly installed on the top of the extension rod. Two limiting plates are fixedly installed on the top of the cylinder. The extruder is slidably connected between the two limiting plates.

[0009] Preferably, both the sealing plate and the roller strip are arc-shaped, and the top of the roller strip is inclined from the middle to both sides.

[0010] Preferably, a movable rod extending to the bottom is slidably mounted on the top of the linkage plate, and a steel ball is sleeved on the bottom of the movable rod. A return spring is sleeved on the outer wall of the movable rod between the linkage plate and the sealing plate.

[0011] The beneficial effects of this utility model are: 1. In use, this utility model uses four connecting rods to drive the circular synchronous ring to slide along the heat exchange tube. The scraping ring on the outer wall of the synchronous ring is in close contact with the inner wall of the heat exchange tube. During the sliding process, impurities attached to the inner wall can be directly scraped off, avoiding the accumulation of impurities and forming a blockage channel. This ensures that the high-temperature flue gas can always be in full contact with the heat exchange tube, maintain stable heat exchange efficiency, ensure the effective recovery of waste heat resources, and solve the problem of heat exchange performance degradation caused by blockage in traditional devices.

[0012] 2. When this utility model is in use, the scraped impurities move and accumulate to the bottom with the synchronous ring. When the extruder squeezes the cylinder, it can drive the moving rod to slide down, so that the sealing plate and the roller strip are separated from the waste trough. The impurities automatically slide down and are discharged along the inclined top surface of the roller strip. After discharge, the reset spring drives the component to rebound, realizing the automatic sealing of the waste trough. The whole process does not require manual disassembly and cleaning, which greatly reduces the workload of operation and maintenance and labor costs, while avoiding the safety risks of manual contact with high-temperature equipment. Attached Figure Description

[0013] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the waste trough of this utility model; Figure 3This is a schematic diagram of the synchronization ring, scraper ring, and extrusion component of this utility model; Figure 4 This is a schematic diagram of the transition tube and sealing cap of this utility model; Figure 5 This is a schematic diagram of the sealing plate and the roller strip of this utility model.

[0015] The attached figures are labeled as follows: 1. Incinerator; 2. Heat exchange tube; 3. Transition tube; 4. Drive cylinder; 5. Synchronization ring; 6. Scraper ring; 7. Connecting rod; 8. Retaining ring; 9. Extrusion part; 10. Sealing cover; 11. Waste trough; 12. Sealing plate; 13. Roller bar; 14. Fixing plate; 15. Linkage plate; 16. Moving rod; 17. Steel ball; 18. Return spring; 19. Extension rod; 20. Cylinder; 21. Limiting plate. 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 scope of protection of the present utility model.

[0017] like Figures 1-5 As shown, a waste heat recovery structure is disclosed, which is applied to an incinerator 1. A heat exchange tube 2 is fixedly installed on one side of the incinerator 1. A transition tube 3 is fixedly connected to the end of the heat exchange tube 2. A sealing cover 10 is fixedly connected to the heat exchange tube 2 through the transition tube 3. A drive cylinder 4 is fixedly installed on the outside of the sealing cover 10. A synchronization ring 5 is slidably installed inside the heat exchange tube 2. A scraper ring 6 is sleeved on the outer wall of the synchronization ring 5. A fixing plate 14 and a linkage plate 15 integrated with the fixing plate 14 are fixedly installed at the bottom of the heat exchange tube 2. A waste discharge unit is provided inside the heat exchange tube 2. A moving rod 16 is provided on the linkage plate 15.

[0018] Synchronization ring 5 is circular, and scraper ring 6 is fitted on the outer wall of synchronization ring 5 near the edge, with the outer wall of scraper ring 6 tightly fitted to the inner wall of heat exchange tube 2.

[0019] A retaining ring 8 is fitted on the outer wall of the synchronizing ring 5 corresponding to the side of the scraper ring 6. An inverted triangular extrusion member 9 is fixedly installed at the bottom of the synchronizing ring 5. One end of the extrusion member 9 is fixedly connected to the side of the scraper ring 6. The retaining ring 8 can prevent impurities from entering the gap between the synchronizing ring 5 and the heat exchange tube 2, thus avoiding affecting the sliding accuracy.

[0020] Four connecting rods 7 are fixedly installed on the inner wall of the synchronization ring 5. The piston rod on the drive cylinder 4 extends slidably into the heat exchange tube 2 through the sealing cover 10, and the ends of the four connecting rods 7 are all fixedly connected to the outer wall of the piston rod.

[0021] The waste discharge unit includes a sealing plate 12, a roller strip 13, an extension rod 19, a cylinder 20, and a limiting plate 21. A waste trough 11 is provided at one end of the bottom of the heat exchange tube 2. The sealing plate 12 is slidably installed in the waste trough 11. The roller strip 13 is fixedly connected to the top of the sealing plate 12. The top of the moving rod 16 extends slidably beyond the top of the roller strip 13 through the sealing plate 12. The extension rod 19 is fixedly installed on the top of the moving rod 16. An inverted cylindrical cylinder 20 is fixedly installed on the top of the extension rod 19. Two limiting plates 21 are fixedly installed on the top of the cylinder 20. The extrusion piece 9 is slidably connected between the two limiting plates 21. The limiting plates 21 limit the contact position between the extrusion piece 9 and the cylinder 20 to prevent the component from shifting and causing discharge failure.

[0022] Both the sealing plate 12 and the roller strip 13 are arc-shaped. The top of the roller strip 13 is inclined from the middle to both sides. When the extruder 9 extrudes the cylinder 20, it can drive the moving rod 16 to slide down, so that the sealing plate 12 and the roller strip 13 are separated from the waste trough 11, and the impurities automatically slide down and are discharged along the inclined top surface of the roller strip.

[0023] A movable rod 16 extending to the bottom is slidably installed on the top of the linkage plate 15, and a steel ball 17 is sleeved on the bottom of the movable rod 16. A return spring 18 is sleeved on the outer wall of the movable rod 16 between the linkage plate 15 and the sealing plate 12. After discharge, the waste trough 11 is automatically sealed by the return spring 18. The waste treatment process of the incinerator does not need to be interrupted throughout the process, which solves the problem of production interruption caused by maintenance shutdown of traditional equipment, ensures the continuity of the incinerator's treatment of domestic waste and industrial solid waste, significantly improves the overall treatment efficiency, and avoids the loss of production capacity caused by shutdown.

[0024] Working Principle: During operation, residual heat from the incinerator 1 enters the heat exchange tube 2. When it is necessary to clean impurities from the inner wall of the heat exchange tube 2, the drive cylinder 4 is activated. The piston rod on the drive cylinder 4 retracts, pulling the connecting rod 7 towards the sealing cover 10. This causes the synchronizing ring 5 to drive the scraper ring 6 to slide along the inner wall of the transition tube 3 towards the sealing cover 10. During the sliding process, the scraper ring 6 scrapes away residual impurities from the inner wall of the transition tube 3. The scraped impurities fall onto the synchronizing ring 5. Since the synchronizing ring 5 is circular, all the impurities fall to the bottom of the synchronizing ring 5 and gradually accumulate at the bottom of the synchronizing ring 5 as the scraper ring 6 slides. When the extruder 9 slides to contact the cylinder 20, the extruder 9 slides between the two limiting plates 21 on the cylinder 20. The cylinder 20 is extended by the continuous extrusion of the extruder 9. The moving rod 16 at the bottom of rod 19 slides down synchronously. As the scraper ring 6 slides continuously, it pushes impurities into the roller strip 13 in the waste trough 11. As the moving rod 16 continues to descend, the roller strip 13 and the sealing plate 12 gradually detach from the waste trough 11. The impurities accumulated on the roller strip 13 are removed from the waste trough 11 and fall down. Since the top of the roller strip 13 is inclined from the middle to both sides, the impurities on the roller strip 13 are completely discharged. As the sealing plate 12 descends in the waste trough 11, it presses the return spring 18 on the linkage plate 15. After being pressed, the return spring 18 deforms and shortens. When the transition tube 3 is cleaned, the piston rod is pushed to return it to its original position. The rebound force of the return spring 18 seals the waste trough 11 with the sealing plate 12 and the roller strip 13.

[0025] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A waste heat recovery structure applied to an incinerator (1), one side of the incinerator (1) is fixedly installed with a heat exchange pipe (2), characterized in that: The heat exchange tube (2) is fixedly connected to a transition tube (3) at its end. The heat exchange tube (2) is fixedly connected to a sealing cover (10) through the transition tube (3). A drive cylinder (4) is fixedly installed on the outside of the sealing cover (10). A synchronization ring (5) is slidably installed inside the heat exchange tube (2). A scraper ring (6) is sleeved on the outer wall of the synchronization ring (5). A fixing plate (14) and a linkage plate (15) integrated with the fixing plate (14) are fixedly installed at the bottom of the heat exchange tube (2). A waste discharge unit is provided inside the heat exchange tube (2). A moving rod (16) is provided on the linkage plate (15).

2. The waste heat recovery structure according to claim 1, characterized by: The synchronization ring (5) is circular, and the scraper ring (6) is sleeved on the outer wall of the synchronization ring (5) near the edge, and the outer wall of the scraper ring (6) is in close contact with the inner wall of the heat exchange tube (2).

3. A waste heat recovery structure according to claim 2, characterized by: The outer wall of the synchronizing ring (5) is fitted with a retaining ring (8) corresponding to the side of the scraping ring (6). The bottom of the synchronizing ring (5) is fixedly installed with an inverted triangular extrusion member (9), one end of which is fixedly connected to the side of the scraping ring (6).

4. A waste heat recovery structure according to claim 3, characterized by: The inner wall of the synchronization ring (5) is fixed with four connecting rods (7), and the piston rod on the drive cylinder (4) slides through the sealing cover (10) into the heat exchange tube (2), and the ends of the four connecting rods (7) are all fixed to the outer wall of the piston rod.

5. A waste heat recovery structure according to claim 4, characterized by: The waste discharge unit includes a sealing plate (12), a roller strip (13), an extension rod (19), a cylinder (20), and a limiting plate (21). A waste trough (11) is provided at one end of the bottom of the heat exchange tube (2). The sealing plate (12) is slidably installed in the waste trough (11). The roller strip (13) is fixedly connected to the top of the sealing plate (12). The top of the moving rod (16) extends out of the top of the roller strip (13) through the sealing plate (12). The extension rod (19) is fixedly installed on the top of the moving rod (16). The cylinder (20) is fixedly installed on the top of the extension rod (19). Two limiting plates (21) are fixedly installed on the top of the cylinder (20). The extruder (9) is slidably connected between the two limiting plates (21).

6. The waste heat recovery structure according to claim 5, characterized in that: Both the sealing plate (12) and the roller strip (13) are arc-shaped, and the top of the roller strip (13) is inclined from the middle to both sides.

7. The waste heat recovery structure according to claim 1, characterized by: The top of the linkage plate (15) is slidably mounted with a moving rod (16) extending to the bottom, and a steel ball (17) is sleeved on the bottom of the moving rod (16). A return spring (18) is sleeved on the outer wall of the moving rod (16) between the linkage plate (15) and the sealing plate (12).

Images