High-temperature tail gas waste heat recovery device for smelting industry

Abstract

The utility model discloses a high-temperature tail gas waste heat recovery device for the smelting industry, and particularly relates to the technical field of waste heat recovery, which comprises a waste heat recovery box with water feeding and water discharging functions fixedly mounted at the top of a mounting frame, and a heat conversion pipe with a smoke feeding function fixedly mounted in an inner cavity of the waste heat recovery box, one side of the heat conversion pipe extends out of the waste heat recovery box and is further provided with a rotating cover capable of rotating in a reciprocating mode within a certain autorotation angle, one side of the rotating cover fixedly communicates with a smoke outlet pipe, and a scraping brush mechanism matched with an inner cavity of the heat conversion pipe is installed on the rotating cover. The scraping and brushing mechanism is matched with the rotating cover rotating in a reciprocating mode and used for scraping and brushing dirt on the inner wall of the heat conversion pipe. The rotating cover rotating in a reciprocating mode within a certain autorotation angle drives the scraping and brushing mechanism to conduct reciprocating scraping on the heat conversion pipe, so that dirt deposited on the inner wall of the heat conversion pipe in high-temperature tail gas is cleaned, the heat exchange efficiency of the heat conversion pipe is prevented from being affected by the dirt, and the cleaning and maintaining difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery, in particular to a high-temperature tail gas waste heat recovery device for smelting industry. Background Technique

[0002] Patent publication number CN210268262U discloses a high-temperature tail gas waste heat recovery device for smelting industry, which includes a smoke inlet pipe, a dust removal mechanism and a waste heat recovery box. It also includes a fixing plate. One side of the outer wall of the top of the fixing plate is welded with a fixing seat, and both sides of the outer wall of the top of the fixing seat are welded with support plates. Both ends of the waste heat recovery box are respectively welded on one side outer wall of the support plates. A serpentine pipe is inserted on one side outer wall of the support plates. One end of the smoke inlet pipe is communicated with the dust removal mechanism, and one end of the serpentine pipe is communicated with the dust removal mechanism. In this utility model, the serpentine pipe slows down the speed of tail gas emission, discharges the tail gas slowly in a cycle, which is convenient for making full use of its heat. The evaporation end at the bottom of the heat pipe is heated, and the heat is transferred to the heat dissipation end of the heat pipe. The heat dissipation end of the heat pipe is in contact with the bottom of the waste heat recovery box, so as to use the waste heat of the tail gas to heat the clear water inside the waste heat recovery box.

[0003] In high-temperature tail gas, there are usually scale-forming substances, such as sulfates, carbonates, etc. The deposition of these substances on the surface of the heat exchanger will reduce the heat exchange efficiency and increase the difficulty of cleaning and maintenance. Content of the Utility Model

[0004] The purpose of the utility model is to provide a high-temperature tail gas waste heat recovery device for smelting industry.

[0005] The technical problem solved by the utility model is as follows:

[0006] The structural substances deposited on the surface of the heat exchanger will reduce the heat exchange efficiency and increase the difficulty of cleaning and maintenance.

[0007] A further technical improvement of the utility model lies in: it includes an installation frame, a waste heat recovery box with water inlet and drainage functions is fixedly installed on the top of the installation frame, a heat conversion pipe with a smoke inlet function is fixedly installed in the inner cavity of the waste heat recovery box, one side of the heat conversion pipe extends out of the waste heat recovery box, and there is also a rotating cover that can reciprocally rotate within a certain rotation angle. One side of the rotating cover is fixedly communicated with a smoke outlet pipe, and a scraping mechanism adapted to the inner cavity of the heat conversion pipe is installed on the rotating cover. The scraping mechanism cooperates with the reciprocally rotating rotating cover to scrape the dirt on the inner wall of the heat conversion pipe.

[0008] Furthermore, the structure that causes the rotating cover to reciprocate within a certain self-rotation angle includes a push-pull plate fixedly installed at the bottom of the outer peripheral wall of the rotating cover. A first sliding groove is formed in the push-pull plate. A limiting plate is fixedly installed at a position near the push-pull plate at the top of the mounting frame. A second sliding groove is formed in the limiting plate. A sliding rod is slidably installed through the second sliding groove and the first sliding groove. A rotating plate is rotatably installed on one side of the top of the mounting frame near the limiting plate. One end of the rotating plate away from the rotating shaft is rotatably installed with a connecting plate. One end of the connecting plate away from the rotating plate is rotatably connected to the end of the sliding rod away from the rotating cover.

[0009] Furthermore, the scraping mechanism includes a rotating bracket arranged inside the heat conversion tube. One side of the rotating bracket is rotatably connected to the inner wall of the heat conversion tube cavity on the side away from the rotating cover, and the other side of the rotating bracket is fixedly connected to the rotating cover. Two sliding brackets are slidably installed through one side of the rotating cover. Brushes are fixedly installed at the top and bottom of the sliding brackets. The side of the brush away from the sliding bracket is in contact with the inner wall of the heat conversion tube. One sides of the two sliding brackets are respectively slidably connected through the two sides of the rotating bracket.

[0010] Furthermore, the scraping mechanism further includes shielding plates fixedly installed on one sides of the two sliding brackets away from the rotating bracket. Sealing grooves adapted to the shielding plates are fixedly installed at positions corresponding to the shielding plates on one side of the rotating cover. A traction frame is fixedly installed on the sides of the two shielding plates away from the sliding brackets. An electric telescopic rod is fixedly installed on one side of the mounting frame. The output end of the electric telescopic rod is rotatably connected to one side of the traction frame.

[0011] Furthermore, the scraping mechanism further includes shielding plates fixedly installed on one sides of the two sliding brackets away from the rotating bracket. Sealing grooves adapted to the shielding plates are fixedly installed at positions corresponding to the shielding plates on one side of the rotating cover. A traction frame is fixedly installed on the sides of the two shielding plates away from the sliding brackets. An electric telescopic rod is fixedly installed on one side of the mounting frame. The output end of the electric telescopic rod is rotatably connected to one side of the traction frame.

[0012] Furthermore, a sealing ring is fixedly installed on the outer peripheral wall of the shielding plate, and the sealing ring is made of rubber material.

[0013] Furthermore, the outside of the heat conversion tube is in a shape of being hollow and penetrated.

[0014] Compared with the prior art, the present utility model has the following beneficial effects:

[0015] 1. In this application, the rotating cover that reciprocates within a certain self-rotation angle drives the scraping mechanism to scrape back and forth in the heat conversion tube, so as to clean the dirt deposited on the inner wall of the heat conversion tube in the high-temperature tail gas, avoid affecting the heat exchange efficiency of the heat conversion tube, and reduce the difficulty of cleaning and maintenance.

[0016] 2. In this application, the traction frame drives the sliding bracket to slide on the rotating bracket, thereby driving the brush to enter or exit the inner cavity of the heat conversion tube. When the brush enters the heat conversion tube, the shielding cover plate is sealed in the sealing groove through the sealing ring, preventing the tail gas in the heat conversion tube from overflowing through the slit between the sliding bracket and the rotating cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] For the convenience of those skilled in the art to understand, the present utility model will be further described below in conjunction with the accompanying drawings.

[0018] Figure 1 is the overall structural schematic diagram of the present utility model;

[0019] Figure 2 is the overall structural sectional view of the present utility model;

[0020] Figure 3 is the schematic diagram of the internal structure connection of the present utility model;

[0021] Figure 4 is the schematic diagram of the structural connection between the brushing mechanism and the rotating cover of the present utility model.

[0022] In the figure: 1. mounting frame; 2. waste heat recovery box; 3. water inlet pipe; 4. water outlet pipe; 5. smoke inlet pipe; 6. heat conversion tube; 7. rotating cover; 8. smoke outlet pipe;

[0023] 9. brushing mechanism; 91. rotating bracket; 92. sliding bracket; 93. brush; 94. shielding cover plate; 95. sealing groove; 96. traction frame; 97. electric telescopic rod;

[0024] 10. push-pull plate; 11. limiting plate; 12. sliding rod; 13. rotating plate; 14. connecting plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following will describe in detail the specific embodiments, structures, features, and effects of the present utility model in conjunction with the accompanying drawings and preferred embodiments.

[0026] Please refer to Figures 1-4As shown in the figure, this embodiment provides a high-temperature tail gas waste heat recovery device for the smelting industry, including a mounting frame 1. A waste heat recovery box 2 is fixedly installed at the top of the mounting frame 1. A water inlet pipe 3 is fixedly connected to the top of the waste heat recovery box 2, and a water outlet pipe 4 is fixedly connected to the bottom of the waste heat recovery box 2. A smoke inlet pipe 5 is fixedly connected to one side of the waste heat recovery box 2. Valves are provided on the water inlet pipe 3, the water outlet pipe 4, and the smoke inlet pipe 5. A heat conversion pipe 6 is fixedly installed inside the waste heat recovery box 2. The outside of the heat conversion pipe 6 is in a hollow and through shape. The hollow external structure can increase the heat exchange area between the heat conversion pipe 6 and the clear water inside the waste heat recovery box 2, improving the heat efficiency. One end of the heat conversion pipe 6 is fixedly connected to the smoke inlet pipe 5, and the other end of the heat conversion pipe 6 extends to the outside of the waste heat recovery box 2. And a rotating cover 7 is also rotatably installed. A smoke outlet pipe 8 is fixedly connected to the rotating cover 7. A brushing mechanism 9 is installed inside the heat conversion pipe 6;

[0027] The clear water is transported into the waste heat recovery box 2 through the water inlet pipe 3, and then the high-temperature tail gas is transported into the heat conversion pipe 6 through the smoke inlet pipe 5. The high-temperature tail gas flows through the heat conversion pipe 6 and heats it, so that it heats the clear water inside the waste heat recovery box 2. After the clear water is heated, the water outlet pipe 4 is opened to transport the hot water to a designated position for recycling. The tail gas that has absorbed the heat is finally discharged from the exhaust pipe. The smoke outlet pipe 8 can be connected to a purification device, so that the tail gas is purified before being discharged into the air;

[0028] The brushing mechanism 9 includes a rotating bracket 91 arranged inside the heat conversion pipe 6. One side of the rotating bracket 91 is rotatably connected to the inner wall of the heat conversion pipe 6 away from the rotating cover 7, and the other side of the rotating bracket 91 is fixedly connected to the rotating cover 7. Two sliding brackets 92 are slidably installed through one side of the rotating cover 7. Brushes 93 are fixedly installed at the top and bottom of the sliding brackets 92. The side of the brush 93 away from the sliding bracket 92 is in contact with the inner wall of the heat conversion pipe 6. One side of the two sliding brackets 92 respectively passes through and is slidably connected to both sides of the rotating bracket 91. Covers 94 are fixedly installed on the other side of the two sliding brackets 92. Sealing grooves 95 adapted to the covers 94 are fixedly installed at the positions corresponding to the covers 94 on one side of the rotating cover 7. Sealing rings are fixedly installed on the outer peripheral walls of the covers 94. The sealing rings are made of rubber materials. A traction frame 96 is fixedly installed on the side of the two covers 94 away from the sliding brackets 92. An electric telescopic rod 97 is fixedly installed on one side of the mounting frame 1. The output end of the electric telescopic rod 97 is rotatably connected to one side of the traction frame 96;

[0029] When the rotating cover 7 rotates, it drives the rotating bracket 91 to rotate synchronously. The rotating bracket 91 then drives the sliding bracket 92 to rotate within the heat conversion tube 6, causing the sliding bracket 92 to drive the brush 93 to scrape along the inner wall of the heat conversion tube 6, thereby scraping off the dirt deposited on the inner wall of the heat conversion tube 6. When the brush 93 has been used for a period of time and has too much surface stain and loses the effect of cleaning the inner wall of the heat conversion tube 6, the electric telescopic rod 97 can drive the two cover plates 94 to disengage from the sealing groove 95 through the traction frame 96 at the same time. The two cover plates 94 can then drive the two sliding brackets 92 to move outward along the rotating bracket 91 towards the outside of the heat conversion tube 6, thereby removing the brush 93 from the heat conversion tube 6. Then, the brush 93 is cleaned and cleaning liquid is sprayed. Then, the traction frame 96 can drive the two cover plates 94 to enter the sealing groove 95, and the cover plates 94 are sealed in the sealing groove 95 through the sealing ring, so that the brush 93 finally enters the heat conversion tube 6;

[0030] A push-pull plate 10 is fixedly installed at the bottom of the outer peripheral wall of the rotating cover 7. A first chute is provided on the push-pull plate 10. A limiting plate 11 is fixedly installed at a position on the top of the mounting frame 1 close to the push-pull plate 10. A second chute is provided on the limiting plate 11. A sliding rod 12 is slidably installed through the second chute and the first chute. A rotating plate 13 is rotatably installed on one side of the top of the mounting frame 1 close to the limiting plate 11. A driving motor for driving the rotating plate 13 to rotate is installed on the mounting frame 1. One end of the rotating plate 13 away from the rotating shaft is rotatably installed with a connecting plate 14. One end of the connecting plate 14 away from the rotating plate 13 is rotatably connected to one end of the sliding rod 12 away from the rotating cover 7;

[0031] The rotating rotating plate 13 drives the sliding rod 12 to reciprocate in the second chute on the limiting plate 11 through the connecting plate 14. The reciprocating sliding rod 12 pushes and pulls the push-pull plate 10, causing the push-pull plate 10 to drive the rotating cover 7 to reciprocate within a certain self-rotation angle. At the same time, the sliding rod 12 slides relative to the second chute on the push-pull plate 10 to correct the position change between the push-pull plate 10 and the sliding rod 12 after the sliding rod 12 pushes the push-pull plate 10.

[0032] When the present utility model is in use, clean water is transported into the waste heat recovery tank 2 through the water inlet pipe 3. Then, the high-temperature tail gas is discharged into the heat conversion tube 6 through the smoke inlet pipe 5. When the high-temperature tail gas flows in the heat conversion tube 6, it heats the heat conversion tube 6. The heated heat conversion tube 6 then transfers the heat to the clean water in the waste heat recovery tank 2, thereby heating the clean water. When the clean water is heated, it can be discharged from the waste heat recovery tank 2 through the drain pipe. Then, clean water is input into the waste heat recovery tank 2 through the water inlet pipe 3 to perform the next round of waste heat recovery;

[0033] While recovering waste heat, the rotating cover 7 that reciprocally rotates within a certain angle drives the rotating bracket 91 to rotate within the heat conversion tube 6, so that the rotating bracket 91 drives the two sliding brackets 92 to reciprocally brush along the inner wall of the heat conversion tube 6, in order to clean the dirt deposited on the inner wall of the heat conversion tube 6 in the tail gas. When there is too much stain on the surface of the brush 93 and the cleaning effect deteriorates, the traction frame 96 drives the two cover plates 94 to disengage from the sealing groove 95, and then drives the sliding bracket 92 to slide outward along the rotating bracket 91 towards the outside of the heat conversion tube 6, so that the brush 93 is moved out of the heat conversion tube 6. Then, measures can be taken to clean and replace the brush 93, and a certain amount of cleaning agent can also be sprayed on the brush 93. Then, when the brush 93 is moved back into the heat conversion tube 6, the inner wall of the heat conversion tube 6 can be cleaned again.

[0034] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A high-temperature tail gas waste heat recovery device for the smelting industry, including a mounting frame (1), characterized in that: At the top of the mounting frame (1), a waste heat recovery box (2) with water inlet and drainage functions is fixedly installed. Inside the waste heat recovery box (2), a heat conversion tube (6) with a smoke inlet function is fixedly installed. One side of the heat conversion tube (6) extends out of the waste heat recovery box (2), and a rotating cover (7) capable of reciprocating rotation within a certain self-rotation angle is also provided. One side of the rotating cover (7) is fixedly communicated with a smoke outlet pipe (8). A brushing mechanism (9) adapted to the inner cavity of the heat conversion tube (6) is installed on the rotating cover (7). The brushing mechanism (9) cooperates with the reciprocating rotating cover (7) to brush the dirt on the inner wall of the heat conversion tube (6).

2. A high-temperature tail gas waste heat recovery device for smelting industry according to claim 1, characterized in that, The structure for causing the rotating cover (7) to reciprocate rotation within a certain self-rotation angle includes a push-pull plate (10) fixedly installed at the bottom of the outer peripheral wall of the rotating cover (7). A first chute is provided on the push-pull plate (10). A limiting plate (11) is fixedly installed at a position near the push-pull plate (10) on the top of the mounting frame (1). A second chute is provided on the limiting plate (11). A sliding rod (12) is slidably installed through the second chute and the first chute. A rotating plate (13) is rotatably installed on one side of the top of the mounting frame (1) near the limiting plate (11). One end of the rotating plate (13) away from the rotating shaft is rotatably installed with a connecting plate (14). One end of the connecting plate (14) away from the rotating plate (13) is rotatably connected to one end of the sliding rod (12) away from the rotating cover (7).

3. The high-temperature tail gas waste heat recovery device for smelting industry according to claim 1, characterized in that, The brushing mechanism (9) includes a rotating bracket (91) arranged inside the heat conversion tube (6). One side of the rotating bracket (91) is rotatably connected to the inner wall of the heat conversion tube (6) on the side away from the rotating cover (7), and the other side of the rotating bracket (91) is fixedly connected to the rotating cover (7). Two sliding brackets (92) are slidably installed through one side of the rotating cover (7). Brushes (93) are fixedly installed at the top and bottom of the sliding brackets (92). One side of the brushes (93) away from the sliding brackets (92) is in contact with the inner wall of the heat conversion tube (6). One side of the two sliding brackets (92) is slidably connected through both sides of the rotating bracket (91).

4. A high-temperature tail gas waste heat recovery device for smelting industry according to claim 3, characterized in that, The brushing mechanism (9) further includes shielding covers (94) fixedly installed on one side of the two sliding brackets (92) away from the rotating bracket (91). Sealing grooves (95) adapted to the shielding covers (94) are fixedly installed at positions corresponding to the shielding covers (94) on one side of the rotating cover (7). A traction frame (96) is fixedly installed on one side of the two shielding covers (94) away from the sliding brackets (92). An electric telescopic rod (97) is fixedly installed on one side of the mounting frame (1). The output end of the electric telescopic rod (97) is rotatably connected to one side of the traction frame (96).

5. A high-temperature tail gas waste heat recovery device for smelting industry according to claim 4, characterized in that, A sealing ring is fixedly installed on the outer peripheral wall of the shielding cover (94), and the sealing ring is made of rubber material.

6. The high-temperature tail gas waste heat recovery device for smelting industry according to claim 1, characterized in that, The outside of the heat conversion tube (6) is in a hollow and through shape.

Images