Flue gas waste heat collecting device for industrial furnace

Abstract

The utility model discloses an industrial furnace flue gas waste heat collection device, and belongs to the technical field of industrial furnace flue gas collection. An industrial furnace flue gas waste heat collecting device comprises an industrial furnace and a flue gas treatment tank arranged on one side of the industrial furnace, an inlet pipe is fixedly communicated between the industrial furnace and the flue gas treatment tank, a filter plate is slidably connected into the flue gas treatment tank, and the industrial furnace flue gas waste heat collecting device further comprises a rotating rod rotationally connected into the flue gas treatment tank. Four convex plates are fixedly connected to the periphery of the rotating rod; according to the flue gas waste heat collecting device for the industrial furnace, a motor drives a rotating rod to rotate and drives a convex plate to rotate, the convex plate drives an external circular ring to rotate, and the circular ring drives a scrubbing brush on a scraping plate to rotate to scrape and clean dust particles on a filter plate, so that particles blocked in filter holes of the filter plate are effectively scraped and fall off; the blockage of the filter plate is treated in time, and the filter plate is prevented from being blocked in the process of continuously filtering flue gas.

Description

Technical Field

[0001] This utility model relates to the field of industrial furnace flue gas collection technology, and in particular to an industrial furnace flue gas waste heat collection device. Background Technology

[0002] During operation, industrial furnaces release a significant amount of heat through flue gas. By collecting waste heat from these flue gas, this heat can be reused, reducing the consumption of new primary energy sources (such as coal, natural gas, and oil). For example, in the steel industry, blast furnace gas and other flue gas have high temperatures; collecting their waste heat can preheat combustion air or heat other process fluids, thereby reducing energy demand in the production process. Statistics show that effectively utilizing waste heat from flue gas can increase the energy efficiency of industrial furnaces by 10%-30%.

[0003] A search revealed Chinese patent publication number CN220677201U, which discloses an industrial furnace flue gas waste heat recovery device, relating to the field of industrial boiler technology. The device includes a filter box with square through-holes on both sides. A first filter frame is movably inserted into two of the square through-holes. A second filter frame is hinged to one side of the first filter frame. Three mounting slots are provided on one side of the first filter frame, and a dust filter, a micro-dust filter, and an activated carbon plate are movably inserted into each of the three mounting slots. This patent has the following shortcomings: Currently, existing industrial furnace flue gas collection methods often use filters before collection. Since industrial flue gas often contains a large number of solid particles, such as dust and soot, these particles can clog pipes and heat exchange channels if they enter heat exchangers or other waste heat collection equipment. While filters are typically used for collection, these filters are prone to clogging over time, requiring disassembly and cleaning. This process necessitates shutting down the equipment, impacting the efficiency of the entire waste heat collection system. Utility Model Content

[0004] The purpose of this invention is to solve the problem in the prior art that the filter screen is easily clogged when industrial flue gas is filtered for a long time, which affects the flue gas collection efficiency, and to propose an industrial furnace flue gas waste heat collection device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An industrial furnace flue gas waste heat collection device includes an industrial furnace and a flue gas treatment tank disposed on one side of the industrial furnace. An inlet pipe is fixedly connected between the industrial furnace and the flue gas treatment tank. A filter plate is slidably connected inside the flue gas treatment tank. The device also includes a rotating rod rotatably connected inside the flue gas treatment tank. Four protruding plates are fixedly connected around the circumference of the rotating rod. A circular ring is slidably connected to the outside of the four protruding plates. Scraping plates are fixedly connected to both sides of the circular ring. A hard brush is fixedly connected to the bottom of the scraping plate.

[0007] Preferably, the top of the flue gas treatment tank is fixedly connected to an outlet pipe, and the end of the outlet pipe away from the flue gas treatment tank is fixedly connected to a heat exchanger, and a collection pipe is fixedly connected to the heat exchanger.

[0008] Preferably, a motor is fixedly installed on the top of the flue gas treatment tank, the output end of the motor extends into the inside of the flue gas treatment tank and is fixedly connected to a rotating rod, and a conical ball is fixedly connected to the bottom of the rotating rod.

[0009] Preferably, a plurality of fixing blocks are fixedly connected around the inner wall of the flue gas treatment tank, and a plurality of sliding rods are fixedly connected around the top of the filter plate. Each of the sliding rods is fitted with a first spring, and the two ends of the first spring abut against the fixing blocks and the filter plate, respectively.

[0010] Preferably, a cam is fixedly connected to the rotating rod, and L-shaped plates are fixedly connected to the inner walls of both sides of the flue gas treatment tank. A vertical rod and a horizontal rod are slidably connected to each of the two L-shaped plates. A second spring is sleeved on the horizontal rod, and the two ends of the second spring are fixedly connected to the horizontal rod and the L-shaped plate, respectively.

[0011] Preferably, a trapezoidal plate corresponding to the horizontal bar is fixedly connected to the bottom of the vertical bar, and a rubber hammer is fixedly connected to the top of the vertical bar.

[0012] Preferably, a third spring is fitted on the vertical rod, and the two ends of the third spring abut against the trapezoidal plate and the L-shaped plate, respectively.

[0013] Compared with the prior art, this utility model provides an industrial furnace flue gas waste heat collection device, which has the following beneficial effects:

[0014] 1. This industrial furnace flue gas waste heat collection device uses a motor to drive a rotating rod, which in turn drives a convex plate. The convex plate drives an external ring, which in turn drives a hard brush on a scraping plate to scrape and clean dust particles on the filter plate. This effectively removes and dislodges particles clogging the filter holes, thus promptly addressing filter plate blockage and preventing further clogging during continuous flue gas filtration.

[0015] 2. The industrial furnace flue gas waste heat collection device uses a motor to drive a rotating rod, which in turn drives a conical ball at the bottom to rotate continuously. When the flue gas enters from the bottom of the flue gas treatment tank, it passes through the conical ball and can diffuse throughout the inside of the flue gas treatment tank under the guidance of the conical ball, allowing the flue gas to have sufficient space for filtration within the flue gas treatment tank.

[0016] 3. This industrial furnace flue gas waste heat collection device uses a rotating rod to drive a cam to rotate. When the cam's protrusion contacts the crossbar, the crossbar slides along the inclined surface of the trapezoidal plate. Guided by the L-shaped plate, the trapezoidal plate drives the vertical rod and rubber hammer to slide upward, striking the bottom of the filter plate and pushing it upward, causing the filter plate to vibrate. At the same time, the ring drives the hard brush on the scraper plate to enter the filter holes of the filter plate, clearing the particles clogging the filter holes. The crossbar reciprocates and contacts the trapezoidal plate, causing the rubber hammer to repeatedly strike the filter plate. Combined with the elastic force of the first spring on the filter plate, the filter plate continuously vibrates, shaking off the solid particles stuck in the filter holes of the filter plate, preventing the filter plate from clogging, and greatly improving the flue gas collection efficiency. Attached Figure Description

[0017] Figure 1 This is a front structural diagram of an industrial furnace flue gas waste heat collection device proposed in this utility model.

[0018] Figure 2 This is a schematic diagram of the internal structure of the flue gas treatment tank in an industrial furnace flue gas waste heat collection device proposed in this utility model.

[0019] Figure 3 This is a schematic diagram of the left side of an industrial furnace flue gas waste heat collection device proposed in this utility model.

[0020] Figure 4 The present utility model proposes Figure 3 A schematic diagram of the structure of part A;

[0021] Figure 5 The present utility model proposes Figure 3 A structural diagram of section B;

[0022] Figure 6 This is a front view structural diagram of an industrial furnace flue gas waste heat collection device proposed in this utility model;

[0023] Figure 7 The present utility model proposes Figure 6 A structural diagram of section C;

[0024] Figure 8 This is a schematic diagram of the filter plate and conical ball in an industrial furnace flue gas waste heat collection device proposed in this utility model.

[0025] Figure 9 The present utility model proposes Figure 8 A schematic diagram of the structure of part D.

[0026] In the diagram: 1. Industrial furnace; 2. Flue gas treatment tank; 3. Inlet pipe; 4. Filter plate; 5. Rotating rod; 6. Convex plate; 7. Ring; 8. Scraper; 801. Hard brush; 9. Outlet pipe; 10. Heat exchanger; 11. Collection pipe; 12. Motor; 13. Conical ball; 14. Fixing block; 15. Sliding rod; 16. First spring; 17. Cam; 18. L-shaped plate; 19. Vertical rod; 20. Horizontal rod; 21. Second spring; 22. Trapezoidal plate; 23. Rubber hammer; 24. Third spring. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Reference Figures 1-9 An industrial furnace flue gas waste heat collection device includes an industrial furnace 1 and a flue gas treatment tank 2 disposed on one side of the industrial furnace 1. An inlet pipe 3 is fixedly connected between the industrial furnace 1 and the flue gas treatment tank 2. A filter plate 4 is slidably connected inside the flue gas treatment tank 2. The device also includes a rotating rod 5 rotatably connected inside the flue gas treatment tank 2. Four protruding plates 6 are fixedly connected to the circumference of the rotating rod 5. A circular ring 7 is slidably connected to the outside of the four protruding plates 6. Scraping plates 8 are fixedly connected to both sides of the circular ring 7. A hard brush 801 is fixedly connected to the bottom of the scraping plate 8. The device is rotated by the rotating rod 5. The convex plate 6 rotates, which in turn rotates the outer ring 7. The ring 7 then rotates the hard brush 801 on the scraper plate 8 to scrape and clean the dust particles on the filter plate 4. This effectively removes and dislodges the particles clogging the mesh of the filter plate 4. When the filter plate 4 moves upward, it drives the ring 7 and the scraper plate 8 upward simultaneously. The hard brush 801 on the scraper plate 8 enters the filter holes of the filter plate 4, pushing the particles inside the mesh of the filter plate 4 to the bottom of the flue gas treatment tank 2, thus achieving timely treatment of the filter plate 4 blockage.

[0030] The top of the flue gas treatment tank 2 is fixedly connected to an outlet pipe 9. The end of the outlet pipe 9 away from the flue gas treatment tank 2 is fixedly connected to a heat exchanger 10. A collection pipe 11 is fixedly connected to the heat exchanger 10. The flue gas generated by the industrial furnace 1 enters the flue gas treatment tank 2 through the inlet pipe 3. After the filter plate 4 in the flue gas treatment tank 2 filters the flue gas, it enters the heat exchanger 10 through the outlet pipe 9. Then, the flue gas is cooled down by heat exchange in the heat exchanger 10 and is discharged through the collection pipe 11 for collection. It should be noted that the heat exchanger 10 is existing technology and can cool down the high-temperature flue gas.

[0031] A motor 12 is fixedly installed on the top of the flue gas treatment tank 2. The output end of the motor 12 extends into the interior of the flue gas treatment tank 2 and is fixedly connected to the rotating rod 5. A conical ball 13 is fixedly connected to the bottom of the rotating rod 5. By starting the motor 12, the rotating rod 5 is driven to rotate, and the rotating rod 5 drives the conical ball 13 at the bottom to rotate continuously. When the flue gas enters from the bottom of the flue gas treatment tank 2, the flue gas passes through the conical ball 13 and can diffuse around inside the flue gas treatment tank 2 under the guidance of the conical ball 13, so that the flue gas has sufficient space for filtration inside the flue gas treatment tank 2.

[0032] Multiple fixing blocks 14 are fixedly connected around the inner wall of the flue gas treatment tank 2, and multiple sliding rods 15 are fixedly connected around the top of the filter plate 4. Each sliding rod 15 is fitted with a first spring 16. The two ends of the first spring 16 abut against the fixing blocks 14 and the filter plate 4 respectively. When the filter plate 4 slides upward through the sliding rods 15, the first spring 16 will be compressed. The first spring 16 can make the filter plate 4 automatically return to its original position and cause the filter plate 4 to vibrate.

[0033] A cam 17 is fixedly connected to the rotating rod 5. L-shaped plates 18 are fixedly connected to the inner walls of both sides of the flue gas treatment tank 2. Vertical rods 19 and horizontal rods 20 are slidably connected to both L-shaped plates 18. A second spring 21 is sleeved on the horizontal rod 20. The two ends of the second spring 21 are fixedly connected to the horizontal rod 20 and the L-shaped plate 18, respectively. When the motor 12 drives the rotating rod 5 to rotate, it also drives the cam 17 to rotate. When the protrusion of the cam 17 abuts against the horizontal rod 20, the horizontal rod 20 slides under the guidance of the L-shaped plate 18 and compresses the second spring 21. When the protrusion of the cam 17 does not abut against the horizontal rod 20, the horizontal rod 20 will automatically reset under the action of the second spring 21. The protrusion of the cam 17 abuts against the horizontal rod 20 repeatedly, and the horizontal rod 20 slides back and forth on the L-shaped plate 18.

[0034] The bottom of the vertical rod 19 is fixedly connected to a trapezoidal plate 22 corresponding to the horizontal rod 20, and the top of the vertical rod 19 is fixedly connected to a rubber hammer 23.

[0035] A third spring 24 is fitted onto the vertical rod 19. The two ends of the third spring 24 abut against the trapezoidal plate 22 and the L-shaped plate 18, respectively. When the horizontal rod 20 slides, it slides along the inclined surface of the trapezoidal plate 22. Guided by the L-shaped plate 18, the trapezoidal plate 22 slides upward and compresses the third spring 24, causing the vertical rod 19 and the rubber hammer 23 to slide upward, striking the bottom of the filter plate 4 and pushing it upward, causing the filter plate 4 to vibrate. When the horizontal rod 20 is no longer in contact with the trapezoidal plate 22, the third spring 24 automatically causes the vertical rod 19 to drive the rubber hammer 23 and the trapezoidal plate 22 to return to their original position downward. The horizontal rod 20 repeatedly abuts against the trapezoidal plate 22, causing the rubber hammer 23 to repeatedly strike the filter plate 4. Combined with the elastic force of the first spring 16 on the filter plate 4, the filter plate 4 continuously vibrates, causing solid particles stuck in the filter holes of the filter plate 4 to fall off, preventing the filter plate 4 from clogging and greatly improving the flue gas collection efficiency.

[0036] In this invention, during use, the motor 12 is started, and the flue gas generated by the industrial furnace 1 enters the flue gas treatment tank 2 through the inlet pipe 3. The rotating rod 5 drives the convex plate 6 to rotate, which in turn drives the outer ring 7 to rotate. The ring 7 drives the hard brush 801 on the scraping plate 8 to rotate, scraping and cleaning the dust particles on the filter plate 4, effectively removing the particles clogging the mesh of the filter plate 4. At the same time, the rotating rod 5 drives the cam 17 to rotate. When the protrusion of the cam 17 abuts against the crossbar 20, the crossbar 20 slides under the guidance of the L-shaped plate 18, compressing the second spring 21. As the crossbar 20 slides, it slides along the inclined surface of the trapezoidal plate 22. The trapezoidal plate 22 slides upward under the guidance of the L-shaped plate 18, compressing the third spring 24, which drives the vertical rod 19 and the rubber hammer 23 to slide upward, striking the bottom of the filter plate 4 and pushing it upward. The filter plate 4 vibrates, and the ring 7 drives the hard brush 801 on the scraper plate 8 to enter the filter holes of the filter plate 4 to remove the particles clogging the filter holes. When the protrusion of the cam 17 does not contact the crossbar 20, the crossbar 20 will automatically reset under the action of the second spring 21. The protrusion of the cam 17 reciprocates against the crossbar 20, and the crossbar 20 will slide back and forth on the L-shaped plate 18. When the crossbar 20 does not contact the trapezoidal plate 22, the third spring 24 automatically causes the vertical rod 19 to drive the rubber hammer 23 and the trapezoidal plate 22 to reset downward. The crossbar 20 reciprocates against the trapezoidal plate 22, so that the rubber hammer 23 repeatedly hits the filter plate 4. Combined with the elastic force of the first spring 16 on the filter plate 4, the filter plate 4 vibrates continuously, shaking off the solid particles stuck in the filter holes of the filter plate 4, preventing the filter plate 4 from clogging, and greatly improving the flue gas collection efficiency.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A waste heat collection device for industrial furnace flue gas, comprising: An industrial furnace (1) and a flue gas treatment tank (2) disposed on one side of the industrial furnace (1), wherein an inlet pipe (3) is fixedly connected between the industrial furnace (1) and the flue gas treatment tank (2), characterized in that a filter plate (4) is slidably connected inside the flue gas treatment tank (2), and further comprising: Rotary rod (5) is rotatably connected inside the flue gas treatment tank (2). Four protruding plates (6) are fixedly connected around the circumference of the rotating rod (5). A ring (7) is slidably connected to the outside of the four protruding plates (6). Scraping plates (8) are fixedly connected to both sides of the ring (7). A hard brush (801) is fixedly connected to the bottom of the scraping plate (8).

2. The industrial furnace flue gas waste heat collection device according to claim 1, characterized in that, The top of the flue gas treatment tank (2) is fixedly connected to an outlet pipe (9), and the end of the outlet pipe (9) away from the flue gas treatment tank (2) is fixedly connected to a heat exchanger (10), and a collection pipe (11) is fixedly connected to the heat exchanger (10).

3. The industrial furnace flue gas waste heat collection device according to claim 1, characterized in that, A motor (12) is fixedly installed on the top of the flue gas treatment tank (2). The output end of the motor (12) extends into the inside of the flue gas treatment tank (2) and is fixedly connected to the rotating rod (5). A conical ball (13) is fixedly connected to the bottom of the rotating rod (5).

4. The industrial furnace flue gas waste heat collection device according to claim 1, characterized in that, The inner wall of the flue gas treatment tank (2) is fixedly connected with multiple fixing blocks (14), and the top of the filter plate (4) is fixedly connected with multiple sliding rods (15). Each of the multiple sliding rods (15) is fitted with a first spring (16), and the two ends of the first spring (16) abut against the fixing block (14) and the filter plate (4) respectively.

5. The industrial furnace flue gas waste heat collection device according to claim 1, characterized in that, A cam (17) is fixedly connected to the rotating rod (5). L-shaped plates (18) are fixedly connected to the inner walls of both sides of the flue gas treatment tank (2). A vertical rod (19) and a horizontal rod (20) are slidably connected to both L-shaped plates (18). A second spring (21) is sleeved on the horizontal rod (20). The two ends of the second spring (21) are fixedly connected to the horizontal rod (20) and the L-shaped plate (18) respectively.

6. The industrial furnace flue gas waste heat collection device according to claim 5, characterized in that, The bottom of the vertical rod (19) is fixedly connected to a trapezoidal plate (22) corresponding to the horizontal rod (20), and the top of the vertical rod (19) is fixedly connected to a rubber hammer (23).

7. The industrial furnace flue gas waste heat collection device according to claim 6, characterized in that, A third spring (24) is fitted on the vertical rod (19), and the two ends of the third spring (24) abut against the trapezoidal plate (22) and the L-shaped plate (18) respectively.

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