A double furnace waste heat recovery device

Abstract

The utility model relates to the technical field of waste heat recovery, and discloses a double-furnace waste heat recovery device, including a water storage tank, an air inlet pipe and an air outlet pipe, wherein the air inlet pipe is installed on the left side of the water storage tank, and the air outlet pipe is installed on the right side of the water storage tank, a filter screen is installed on the inner side of the air inlet pipe, and a fixing plate is fixedly connected to the bottom end of the filter screen, a rectangular mounting opening is provided at the bottom of the air inlet pipe, and the top of the fixing plate fits the inner wall of the rectangular mounting opening. The utility model pulls the fixing plate to move downward, so that the fixing plate drives the filter screen and the aggregate box to move downward, and when the filter screen moves downward, the cleaning brush slides on the surface of the filter screen, which can play a preliminary cleaning role for the dust accumulated on the surface of the filter screen, and when the filter screen moves to the outside of the air inlet pipe, the staff can further clean the dust accumulated on the filter screen, which is relatively practical and suitable for wide promotion and use.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste heat recovery, and specifically relates to a double-furnace waste heat recovery device. Background Art

[0002] Waste heat refers to the sensible heat and latent heat that has not been reasonably utilized in the original design of energy-consuming devices of industrial enterprises that have been put into operation due to the limitations of historical, technological, and conceptual factors. It includes waste heat from high-temperature exhaust gas, waste heat from cooling media, waste heat from waste steam and waste water, waste heat from high-temperature products and slag, waste heat from chemical reactions, and waste heat from combustible waste gas, waste liquid, and waste materials.

[0003] During the metallurgical production process, when various materials or workpieces are subjected to heat processing, the metallurgical furnace will discharge a large amount of high-temperature flue gas. The high-temperature flue gas discharged from the metallurgical furnace often takes away 20-50% of the heat supplied by the furnace, resulting in a large heat loss. In order to prevent the heat carried away by the high-temperature flue gas from being wasted, a waste heat recovery device is usually used to utilize the heat carried in the discharged high-temperature flue gas. Since the flue gas is mixed with dust, it needs to be filtered before waste heat recovery can be performed, so as to avoid pipeline blockage during flue gas transportation. However, the current filtering method mostly uses a filter screen to filter the high-temperature flue gas. After long-term use, the filter screen is prone to blockage, thereby affecting the subsequent normal waste heat recovery work. In view of this, the utility model is a double-furnace waste heat recovery device to solve the above problem. Utility Model Content

[0004] In order to solve the above-mentioned problem that the flue gas is mixed with dust and needs to be filtered before the waste heat recovery can be carried out, so as to avoid the phenomenon of pipeline blockage during flue gas transportation, but the current filtering method mostly uses a filter screen to filter the high-temperature flue gas, and the filter screen is prone to be blocked after long-term use, affecting the subsequent normal waste heat recovery work. The basic concept of the technical solution adopted by the utility model is:

[0005] A double-furnace waste heat recovery device comprises a water storage tank, an air inlet pipe and an air outlet pipe, the air inlet pipe is installed on the left side of the water storage tank, the air outlet pipe is installed on the right side of the water storage tank, a filter screen is installed on the inner side of the air inlet pipe, the bottom end of the filter screen is fixedly connected to a fixing plate, a rectangular mounting opening is provided at the bottom of the air inlet pipe, the top of the fixing plate is fitted with the inner wall of the rectangular mounting opening, a symmetrically arranged fixing seat is fixedly connected to the outer wall of the bottom of the air inlet pipe, a movable groove is provided on one side of the two fixing seats, a wedge-shaped block is slidably connected to the inner wall of the two movable grooves, and the fixing seat is fixedly connected to the outer wall of the bottom of the air inlet pipe. The bottom of the plate is provided with symmetrically arranged limit slots, the wedge-shaped blocks are adapted to the limit slots, the inner walls of one side of the two movable slots are fixedly connected with springs, one end of the two springs are respectively connected to the outer walls of one side of the two wedge-shaped blocks, one side of the two movable slots is provided with through holes, and the inner walls of the through holes are slidably connected with movable rods, one end of the two movable rods are respectively fixedly connected to the outer walls of one side of the two wedge-shaped blocks, the two springs are respectively sleeved on the two movable rods, and one end of the two movable rods located on the outside of the two fixed seats is fixedly connected to the same push-pull rod.

[0006] As a preferred embodiment of the utility model, a top cover is arranged on the top of the water storage tank, and a feed opening is opened at the bottom of the air inlet pipe, and the feed opening is communicated with the rectangular installation opening.

[0007] As a preferred embodiment of the utility model, a material collecting box is fixedly connected to the outer wall of one side of the fixed plate, and the material collecting box is located directly below the feed opening, and the top of the material collecting box is in contact with the outer wall of the bottom of the air inlet pipe.

[0008] As a preferred embodiment of the utility model, the inner wall at the bottom of the air inlet pipe is fixedly connected with a symmetrically arranged fixed block, the two fixed blocks are respectively located on both sides of the discharge port, and the outer walls on the opposite sides of the two fixed blocks are fixedly connected with the same cleaning brush, and the cleaning brush is in contact with the outer wall on one side of the filter screen plate.

[0009] As a preferred embodiment of the utility model, a symmetrically arranged first delivery pipe is installed on one side of the air inlet pipe, and a symmetrically arranged air delivery pipe is installed inside the water tank, and the two first delivery pipes are respectively connected to the end positions of the two air delivery pipes.

[0010] As a preferred embodiment of the present utility model, the bottom ends of the two gas delivery pipes are connected to connecting pipes, and the bottom ends of the two connecting pipes are connected to second delivery pipes.

[0011] As a preferred embodiment of the utility model, an air collecting box is fixedly installed on the right side of the water tank, the two second delivery pipes are connected to the air collecting box, the air outlet pipe is fixedly connected to one side of the air collecting box, and the air outlet pipe is connected to the air collecting box.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model discloses that when high-temperature smoke enters the air inlet pipe, the dust carried in the high-temperature smoke can be filtered by the arranged filter screen plate, and the filtered dust falls into the collection box through the discharge port to collect the dust, and the high-temperature smoke after filtering enters the two first conveying pipes. When the filter screen plate needs to be cleaned after long-term use, the push-pull rod is pulled to move horizontally, and the push-pull rod drives the two movable rods to move horizontally, and the two movable rods drive the two wedge-shaped clamping blocks to move horizontally until the two wedge-shaped clamping blocks slide out of the two limit clamping grooves, and then the fixing plate is pulled downward to make the fixing plate drive the filter screen plate and the collection box to move downward. When the filter screen plate moves downward, the cleaning brush slides on the surface of the filter screen plate, which can play a preliminary cleaning role for the dust accumulated on the surface of the filter screen plate, and when the filter screen plate moves to the outside of the air inlet pipe, the staff can further clean the dust accumulated on the filter screen plate, and at the same time it is convenient to pour out the dust accumulated in the collection box.

[0014] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In the attached picture:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the water storage tank of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the air intake pipe of the utility model when viewed from above;

[0019] Figure 4 This is a schematic diagram of the side cross-sectional structure of the air intake pipe of the utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the air intake pipe when the filter screen plate of the utility model is removed from the bottom;

[0021] Figure 6 This is a schematic diagram of the connection structure between the fixing plate and the fixing seat of the utility model;

[0022] Figure 7 It is a schematic diagram of the cross-sectional structure of the fixing seat of the utility model.

[0023] In the figure: 1. water storage tank; 2. air inlet pipe; 3. air collecting box; 4. top cover; 5. first delivery pipe; 6. second delivery pipe; 7. air outlet pipe; 8. fixing plate; 9. fixing seat; 10. air delivery pipe; 11. connecting pipe; 12. collecting box; 13. wedge-shaped block; 14. discharge port; 15. fixing block; 16. cleaning brush; 17. filter screen; 18. rectangular mounting port; 19. movable slot; 20. limit slot; 21. spring; 22. movable rod; 23. push-pull rod. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.

[0025] like Figures 1 to 7 Shown

[0026] A double-furnace waste heat recovery device comprises a water storage tank 1, an air inlet pipe 2 and an air outlet pipe 7. The air inlet pipe 2 is installed on the left side of the water storage tank 1, and the air outlet pipe 7 is installed on the right side of the water storage tank 1. A filter screen plate 17 is installed on the inner side of the air inlet pipe 2. When high-temperature flue gas enters the air inlet pipe 2, the dust carried in the high-temperature flue gas can be filtered through the filter screen plate 17. The bottom end of the filter screen plate 17 is fixedly connected with a fixing plate 8. A rectangular mounting opening 18 is provided at the bottom of the air inlet pipe 2. The top of the fixing plate 8 fits with the inner wall of the rectangular mounting opening 18. A symmetrically arranged fixing seat 9 is fixedly connected to the outer wall of the bottom of the air inlet pipe 2. A movable groove 19 is provided on one side of the two fixing seats 9. The inner walls of the two movable grooves 19 are slidably connected with wedge-shaped blocks 13. A symmetrically arranged limiting groove 20 is provided at the bottom of the fixing plate 8. The wedge-shaped blocks 13 are adapted to the limiting groove 20. A spring 21 is fixedly connected to the inner wall of one side of the two movable grooves 19. One end of the two springs 21 is respectively connected to the two On the outer wall of one side of the wedge-shaped block 13, one side of the two movable grooves 19 is provided with a through hole, and the inner wall of the through hole is slidably connected with a movable rod 22, one end of the two movable rods 22 is respectively fixedly connected to the outer wall of one side of the two wedge-shaped blocks 13, and the two springs 21 are respectively sleeved on the two movable rods 22, and one end of the two movable rods 22 located on the outer sides of the two fixed seats 9 is fixedly connected to the same push-pull rod 23. Pulling the push-pull rod 23 moves horizontally, the push-pull rod 23 drives the two movable rods 22 to move horizontally, and the two movable rods 22 drive the two wedge-shaped blocks 13 to move horizontally until the two wedge-shaped blocks 13 slide out of the two limit slots 20, and then pull the fixed plate 8 to move downward, so that the fixed plate 8 drives the filter screen plate 17 and the collection box 12 to move downward. When the filter screen plate 17 moves to the outside of the air inlet pipe 2, the staff can further clean the dust accumulated on the filter screen plate 17, and at the same time, it is convenient to pour out the dust accumulated in the collection box 12.

[0027] In a specific embodiment, a top cover 4 is provided on the top of the water storage tank 1, and a discharge port 14 is opened at the bottom of the air inlet pipe 2, and the discharge port 14 is communicated with the rectangular mounting port 18. A collection box 12 is fixedly connected to the outer wall of one side of the fixing plate 8, and the collection box 12 is located directly below the discharge port 14. The dust after filtration falls into the collection box 12 through the discharge port 14 to realize the collection of dust. The top of the collection box 12 is in contact with the outer wall of the bottom of the air inlet pipe 2, and the inner wall of the bottom of the air inlet pipe 2 is fixedly connected with symmetrically arranged fixed blocks 15, and the two fixed blocks 15 are respectively located on both sides of the discharge port 14. The outer walls of the opposite sides of the two fixed blocks 15 are fixedly connected with the same cleaning brush 16, and the cleaning brush 16 is in contact with the outer wall of one side of the filter mesh plate 17. When the filter mesh plate 17 moves downward, the cleaning brush 16 slides on the surface of the filter mesh plate 17, which can play a role in preliminary cleaning of the dust accumulated on the surface of the filter mesh plate 17.

[0028] Furthermore, a symmetrically arranged first delivery pipe 5 is installed on one side of the air intake pipe 2, and a symmetrically arranged air delivery pipe 10 is installed on the inner side of the water storage tank 1. The two first delivery pipes 5 are respectively connected to the end positions of the two air delivery pipes 10, and the bottom ends of the two air delivery pipes 10 are connected to connecting pipes 11, and the bottom ends of the two connecting pipes 11 are connected to second delivery pipes 6. The air intake pipe 2 is connected to the high-temperature flue gas exhaust port, so that the high-temperature flue gas can enter the two first delivery pipes 5 after being filtered through the air intake pipe 2, so that the high-temperature flue gas enters the two air delivery pipes 10 through the two first delivery pipes 5, and the high-temperature flue gas entering the two air delivery pipes 10 passes through the device The two connecting pipes 11 are arranged to enter the two second delivery pipes 6. Due to the connection method between the air delivery pipe 10, the connecting pipe 11 and the second delivery pipe 6, a Z-shaped flue gas duct is formed. The Z-shaped flue gas duct has a wider contact area with the water stored in the water tank 1, which prolongs the time for the high-temperature flue gas to pass through the water tank 1, and has a better heating effect on the water. An air collecting box 3 is fixedly installed on the right side of the water tank 1, and the two second delivery pipes 6 are both connected to the air collecting box 3. The air outlet pipe 7 is fixedly connected to one side of the air collecting box 3, and the air outlet pipe 7 is connected to the air collecting box 3. The high-temperature flue gas enters the air collecting box 3 through the two second delivery pipes 6 and is discharged through the air outlet pipe 7.

[0029] The implementation principle of a double furnace waste heat recovery device in this embodiment is as follows:

[0030] When in use, the air intake pipe 2 is connected to the high-temperature flue gas exhaust port, so that the high-temperature flue gas can enter the two first conveying pipes 5 through the air intake pipe 2, and the high-temperature flue gas enters the two air delivery pipes 10 through the two first conveying pipes 5. The high-temperature flue gas entering the two air delivery pipes 10 enters the two second conveying pipes 6 through the two connecting pipes 11. Due to the connection between the air delivery pipes 10, the connecting pipes 11 and the second conveying pipes 6, a Z-shaped flue gas pipeline is formed. The Z-shaped flue gas pipeline has a wider contact area with the water stored in the water storage tank 1, which prolongs the time for the high-temperature flue gas to pass through the water storage tank 1, and has a better heating effect on the water. Then the high-temperature flue gas enters the gas collecting box 3 through the two second conveying pipes 6 and is discharged through the air outlet pipe 7. When the high-temperature flue gas enters the air intake pipe 2, the dust carried in the high-temperature flue gas can be filtered by the filter screen 17, and the filtered dust passes through the discharge port 14. The dust collecting box 12 falls into the collecting box 12 to collect the dust. The high-temperature flue gas after filtration enters the two first conveying pipes 5. When the filter screen plate 17 needs to be cleaned after long-term use, the push-pull rod 23 is pulled to move horizontally, and the push-pull rod 23 drives the two movable rods 22 to move horizontally. The two movable rods 22 drive the two wedge-shaped blocks 13 to move horizontally until the two wedge-shaped blocks 13 slide out of the two limit slots 20, and then the fixing plate 8 is pulled downward, so that the fixing plate 8 drives the filter screen plate 17 and the collecting box 12 to move downward. When the filter screen plate 17 moves downward, the cleaning brush 16 slides on the surface of the filter screen plate 17, which can play a preliminary cleaning role for the dust accumulated on the surface of the filter screen plate 17. When the filter screen plate 17 moves to the outside of the air inlet pipe 2, the staff can further clean the dust accumulated on the filter screen plate 17, and at the same time it is convenient to pour out the dust accumulated in the collecting box 12.

Claims

1. A double furnace waste heat recovery device, comprising a water storage tank (1), an air inlet pipe (2) and an air outlet pipe (7), characterized in that: The air inlet pipe (2) is mounted on the left side of the water tank (1), and the air outlet pipe (7) is mounted on the right side of the water tank (1). A filter screen (17) is mounted on the inner side of the air inlet pipe (2), and a fixing plate (8) is fixedly connected to the bottom end of the filter screen plate (17). A rectangular mounting opening (18) is provided at the bottom of the air inlet pipe (2), and the top of the fixing plate (8) is in contact with the inner wall of the rectangular mounting opening (18). A symmetrically arranged fixing seat (9) is fixedly connected to the outer wall of the bottom of the air inlet pipe (2), and a movable groove (19) is provided on one side of the two fixing seats (9). The inner walls of the two movable grooves (19) are slidably connected to a wedge-shaped block (13). A symmetrically arranged limiting seat (18) is provided at the bottom of the fixing plate (8). The wedge-shaped card block (13) is adapted to the limiting card slot (20), the inner wall of one side of the two movable slots (19) is fixedly connected with a spring (21), one end of the two springs (21) is respectively connected to the outer wall of one side of the two wedge-shaped card blocks (13), one side of the two movable slots (19) is provided with a through hole, and the inner wall of the through hole is slidably connected with a movable rod (22), one end of the two movable rods (22) is respectively fixedly connected to the outer wall of one side of the two wedge-shaped card blocks (13), the two springs (21) are respectively sleeved on the two movable rods (22), and one end of the two movable rods (22) located outside the two fixed seats (9) is fixedly connected to the same push-pull rod (23).

2. A double furnace waste heat recovery device according to claim 1, characterized in that: The top of the water storage tank (1) is provided with a top cover (4), and the bottom of the air inlet pipe (2) is provided with a discharge port (14), and the discharge port (14) is communicated with a rectangular installation port (18).

3. A double furnace waste heat recovery device according to claim 2, characterized in that: A material collecting box (12) is fixedly connected to the outer wall of one side of the fixed plate (8), and the material collecting box (12) is located directly below the material discharge port (14), and the top of the material collecting box (12) is in contact with the outer wall of the bottom of the air inlet pipe (2).

4. A double furnace waste heat recovery device according to claim 3, characterized in that: A symmetrically arranged fixing block (15) is fixedly connected to the inner wall at the bottom of the air inlet pipe (2), and two fixing blocks (15) are respectively located on both sides of the feed opening (14). The outer walls on opposite sides of the two fixing blocks (15) are fixedly connected to the same cleaning brush (16), and the cleaning brush (16) is in contact with the outer wall of one side of the filter screen plate (17).

5. The double furnace waste heat recovery device according to claim 1, characterized in that: A symmetrically arranged first delivery pipe (5) is installed on one side of the air inlet pipe (2), and a symmetrically arranged air delivery pipe (10) is installed inside the water storage tank (1), and the two first delivery pipes (5) are respectively connected to the end positions of the two air delivery pipes (10).

6. A double furnace waste heat recovery device according to claim 5, characterized in that: The bottom ends of the two gas delivery pipes (10) are both connected to a connecting pipe (11), and the bottom ends of the two connecting pipes (11) are both connected to a second delivery pipe (6).

7. A double furnace waste heat recovery device according to claim 6, characterized in that: An air collecting box (3) is fixedly mounted on the right side of the water storage tank (1); the two second delivery pipes (6) are both connected to the air collecting box (3); the air outlet pipe (7) is fixedly connected to one side of the air collecting box (3), and the air outlet pipe (7) is in communication with the air collecting box (3).

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