Waste heat recycling device of sintering kiln

Abstract

The utility model discloses a sintering kiln waste heat recycling device which comprises a kiln body, and supporting plates are arranged on the two sides of the top surface of the kiln body. According to the utility model, heat in flue gas is absorbed through the heat absorption pipe and then is transferred to the heat conduction block on the outer side surface of the heat absorption pipe, and the heat can be transferred to cold water in the water tank through the use of the heat conduction block, so that water in the water tank can be heated; used flue gas enters a filter box through a connecting pipe, impurities in the flue gas can be filtered through a filter screen in the filter box, and the impurities and dust in the flue gas are prevented from being discharged into air together, so that the surrounding environment can be protected, and the environmental protection property of the flue gas treatment device is improved; wherein the flue gas filtered by the filter box enters the drying box through the gas guide pipe, and then the blanks in the drying box can be dried again, so that the recycling rate of heat in the flue gas is increased conveniently.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery technology, and in particular to a waste heat recovery and reuse device for sintering kilns. Background Technology

[0002] A kiln is a piece of equipment made of refractory materials used to fire ceramic products; it is an essential facility in the process of pottery making. Over tens of thousands of years of ceramic firing history, humankind has accumulated a wealth of kiln styles and experience. From open-air firing and pit firing in primitive societies to dome-shaped rising-flame round kilns, semi-downdraft horseshoe-shaped kilns, semi-slope dragon kilns, and egg-shaped kilns, and then to modern indoor gas kilns and electric kilns, kiln technology has continuously improved and developed.

[0003] The existing Chinese patent with publication number CN211476754U discloses a kiln waste heat utilization system. The existing technical solution mentioned above has the following defects. Although the heat of the hot air is exchanged with the cooling water to raise the temperature of the cooling water and then recovered and reused by the hot water recovery equipment, thereby realizing the function of recovering and reusing the waste heat of the kiln, the flue gas after heat recovery is directly discharged through the exhaust pipe without the relevant filtration mechanism to filter the impurities and dust in the flue gas. Therefore, the impurities and dust in the flue gas are easily discharged into the air along with the flue gas, which can easily have a negative impact on the surrounding environment and reduce its environmental friendliness. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a waste heat recovery and reuse device for sintering kilns. This device has the advantages of filtering the used flue gas to prevent impurities and dust from being emitted into the air along with the flue gas, thus achieving high environmental friendliness and solving the problems mentioned in the background technology.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a waste heat recovery and reuse device for sintering kilns, comprising a kiln body, support plates on both sides of the top surface of the kiln body, and a water tank between the support plates, a heat-absorbing pipe inside the water tank, and a heat-conducting block on the outer surface of the heat-absorbing pipe inside the water tank, a flue pipe on one side of the top surface of the kiln body, and a fixed connection between the flue pipe and one end of the heat-absorbing pipe, a filter box on one side of the water tank, and filter screens on both sides inside the filter box, with one end of the heat-absorbing pipe penetrating the water tank. The top surface of the box is provided with a connecting pipe, and one end of the connecting pipe extends into the interior of the filter box. A drying box is provided on one side of the kiln body, and an exhaust pipe is provided on the top surface of the drying box. The filter box is connected to the drying box through an air guide pipe. A bearing seat is provided in the middle of one side of the inner wall of the filter box, and a rotating rod is provided through the filter screen in the bearing seat. A cleaning brush is provided on the rotating rod on one side of the filter screen. A motor is installed on one side of the inner wall of the filter box below the bearing seat, and a second gear is fixedly connected to the output end of the motor. The second gear meshes with the first gear provided on the rotating rod.

[0008] Preferably, the water tank has an inlet pipe on one side of its top surface and a drain pipe on one side of its surface, and a valve is installed on the drain pipe.

[0009] Preferably, the front surface of the filter box is provided with a movable plate, and the movable plate is fixedly connected to the filter box by screws.

[0010] Preferably, there are two filters, which are evenly distributed on both sides of the inside of the filter box, and the cleaning brush is matched with the filters.

[0011] Preferably, the front surface of the drying oven is provided with doors on both sides, and the doors are hinged to the drying oven via hinges.

[0012] Preferably, there are multiple heat-conducting blocks, and the multiple heat-conducting blocks are evenly distributed on the outer surface of the heat-absorbing tube.

[0013] Preferably, the drainage pipe is fixedly connected to the kiln body by a pipe clamp.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a waste heat recovery and reuse device for sintering kilns, which has the following features:

[0016] Beneficial effects:

[0017] (1) In this utility model, the flue gas generated by the kiln body during operation enters the heat absorption tube in the water tank through the flue pipe. The heat absorption tube absorbs the heat in the flue gas and then transfers it to the heat-conducting block on the outer surface of the heat absorption tube. Through the use of the heat-conducting block, the heat can be transferred to the cold water in the water tank, thereby heating the water in the water tank. The flue gas after utilization enters the filter box through the connecting pipe. Through the use of the filter screen in the filter box, the impurities in the flue gas can be filtered to prevent the impurities and dust in the flue gas from being emitted into the air together, thereby protecting the surrounding environment and improving its environmental protection. The flue gas after being filtered by the filter box enters the drying box through the air guide pipe, thereby drying the billet in the drying box again, thus facilitating the recovery and utilization rate of heat in the flue gas.

[0018] (2) In this utility model, by opening the motor on one side of the inner wall of the filter box, the motor drives the second gear to rotate. At the same time, the rotation of the second gear drives the first gear on the rotating rod to rotate, so that the cleaning brush on the rotating rod rotates, which can automatically clean the dust and impurities on the filter screen in the filter box, preventing the dust and impurities from accumulating on the filter screen and causing blockage, thus facilitating the subsequent normal use of the filter screen. In particular, by removing the movable plate, the dust and impurities in the filter box can be cleaned, preventing the dust and impurities from accumulating inside the filter box, thus facilitating its subsequent normal use. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the 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.

[0020] Figure 1 This is a schematic diagram of the structure of a waste heat recovery and reuse device for sintering kilns proposed in this utility model;

[0021] Figure 2 This is an enlarged view (A) of a waste heat recovery and reuse device for sintering kilns proposed in this utility model.

[0022] Figure 3 This is a front view of a waste heat recovery and reuse device for sintering kilns proposed in this utility model;

[0023] Figure 4 This is a schematic diagram of the filter box structure of a waste heat recovery and reuse device for sintering kilns proposed in this utility model.

[0024] Legend:

[0025] 1. Kiln body; 2. Exhaust pipe; 3. Support plate; 4. Water tank; 5. Water inlet pipe; 6. Heat absorption pipe; 7. Heat conduction block; 8. Connecting pipe; 9. Filter box; 10. Cleaning brush; 11. Filter screen; 12. Rotating rod; 13. Air guide pipe; 14. Drain pipe; 15. Valve; 16. Exhaust pipe; 17. Drying box; 18. Motor; 19. First gear; 20. Second gear; 21. Box door; 22. Movable plate. Detailed Implementation

[0026] 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.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0028] Please refer to Figure 1-4A waste heat recovery and reuse device for a sintering kiln includes a kiln body 1. Support plates 3 are provided on both sides of the top surface of the kiln body 1, and a water tank 4 is located between the support plates 3. A heat-absorbing pipe 6 is installed inside the water tank 4, and a heat-conducting block 7 is installed on the outer surface of the heat-absorbing pipe 6 inside the water tank 4. An exhaust pipe 2 is provided on one side of the top surface of the kiln body 1, and one end of the exhaust pipe 2 is fixedly connected to the heat-absorbing pipe 6. A filter box 9 is provided on one side of the water tank 4, and filter screens 11 are installed on both sides inside the filter box 9. The heat-absorbing pipe 6... A connecting pipe 8 is provided, penetrating the top surface of the water tank 4, and one end of the connecting pipe 8 extends into the interior of the filter box 9. A drying box 17 is provided on one side of the kiln body 1, and an exhaust pipe 16 is provided on the top surface of the drying box 17. The filter box 9 is connected to the drying box 17 through an air guide pipe 13. A shaft seat is provided at the middle position of one side of the inner wall of the filter box 9, and a rotating rod 12 is provided through the filter screen 11 in the shaft seat. A cleaning brush 10 is provided on the rotating rod 12 on one side of the filter screen 11. A cleaning brush 10 is installed on one side of the inner wall of the filter box 9 below the shaft seat. The system includes a motor 18, with a second gear 20 fixedly connected to its output end. The second gear 20 meshes with a first gear 19 on the rotating rod 12. During operation, the flue gas generated by the kiln body 1 enters the heat absorption pipe 6 in the water tank 4 through the exhaust pipe 2. The heat absorption pipe 6 absorbs the heat from the flue gas and transfers it to the heat-conducting block 7 on the outer surface of the heat absorption pipe 6. The heat is then transferred to the cold water in the water tank 4, thus heating the water. The utilized flue gas then enters the filter box 9 through the connecting pipe 8. The filter screen 11 in the filter box 9 filters impurities from the flue gas, preventing impurities and dust from being released into the air, thus protecting the surrounding environment and improving its environmental friendliness. The filtered flue gas then enters the drying box 17 through the air guide pipe 13, where the blanks are dried again, further improving the recovery and utilization rate of heat from the flue gas.

[0029] In one embodiment, a water inlet pipe 5 is provided on one side of the top surface of the water tank 4, and a drain pipe 14 is provided on one side surface of the water tank 4. A valve 15 is installed on the drain pipe 14. By opening the valve 15 on the drain pipe 14, the hot water in the water tank 4 can be discharged for convenient use by staff.

[0030] In one embodiment, the front surface of the filter box 9 is provided with a movable plate 22, and the movable plate 22 is fixedly connected to the filter box 9 by screws. By loosening the screws and removing the movable plate 22, the dust and impurities in the filter box 9 can be cleaned, preventing the dust and impurities from accumulating inside the filter box 9 and facilitating its normal subsequent use.

[0031] In one embodiment, two filter screens 11 are provided, and the two filter screens 11 are evenly distributed on both sides of the inside of the filter box 9. The cleaning brush 10 is matched with the filter screen 11. By turning on the motor 18 on one side of the inner wall of the filter box 9, the motor 18 drives the second gear 20 to rotate. At the same time, the rotation of the second gear 20 drives the first gear 19 on the rotating rod 12 to rotate, so that the cleaning brush 10 on the rotating rod 12 rotates. This automatically cleans the dust and impurities on the filter screen 11 in the filter box 9, preventing dust and impurities from accumulating on the filter screen 11 and causing blockage, thereby facilitating the subsequent normal use of the filter screen 11.

[0032] In one embodiment, the front surface of the drying oven 17 is provided with doors 21 on both sides, and the doors 21 are hinged to the drying oven 17 by hinges, wherein the blank can be placed in the drying oven 17 by opening the doors 21.

[0033] In one embodiment, a plurality of heat-conducting blocks 7 are provided, and the plurality of heat-conducting blocks 7 are evenly distributed on the outer surface of the heat-absorbing tube 6. Through the use of the plurality of heat-conducting blocks 7, heat can be transferred to the cold water in the water tank 4, thereby heating the water in the water tank 4.

[0034] In one embodiment, the drain pipe 14 is fixedly connected to the kiln body 1 by a pipe clamp. The use of the pipe clamp can fix the drain pipe 14 to the kiln body 1, thereby improving the stability of the drain pipe 14.

[0035] In one embodiment, the control circuit of the control panel can be implemented by simple programming by those skilled in the art, which is common knowledge in the field. It is only used and not modified, so the control method and circuit connection will not be described in detail.

[0036] Working principle:

[0037] During operation, the flue gas generated by the kiln body 1 enters the heat absorption pipe 6 in the water tank 4 through the exhaust pipe 2. The heat absorption pipe 6 absorbs the heat from the flue gas and then transfers it to the heat-conducting block 7 on the outer surface of the heat absorption pipe 6. The heat-conducting block 7 then transfers the heat to the cold water in the water tank 4, thus heating the water. The utilized flue gas then enters the filter box 9 through the connecting pipe 8. The filter screen 11 in the filter box 9 filters impurities from the flue gas, preventing impurities and dust from being emitted into the air, thus protecting the surrounding environment and improving its environmental friendliness. The flue gas filtered by the filter box 9 then enters the drying box 17 through the air guide pipe 13. The blanks in the drying box 17 can then be dried again, thereby improving the heat recovery rate of the flue gas. By opening the motor 18 on one side of the inner wall of the filter box 9, the motor 18 drives the second gear 20 to rotate. At the same time, the rotation of the second gear 20 drives the first gear 19 on the rotating rod 12 to rotate, causing the cleaning brush 10 on the rotating rod 12 to rotate. This automatically cleans the dust and impurities on the filter screen 11 in the filter box 9, preventing dust and impurities from accumulating on the filter screen 11 and causing blockage, thus facilitating the subsequent normal use of the filter screen 11. By removing the movable plate 22, the dust and impurities in the filter box 9 can be cleaned, preventing dust and impurities from accumulating inside the filter box 9, thus facilitating its subsequent normal use.

[0038] 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 sintering furnace waste heat recovery and recycling device, comprising a furnace body (1), characterized in that, The both sides of the top surface of the kiln body (1) are provided with support plates (3), and the water tank (4) is arranged between the support plates (3), the inside of the water tank (4) is provided with a heat absorption pipe (6), and the outer surface of the heat absorption pipe (6) is provided with a heat conduction block (7) inside the water tank (4), one side of the top surface of the kiln body (1) is provided with an exhaust pipe (2), and one end of the exhaust pipe (2) is fixedly connected with the heat absorption pipe (6), one side surface of the water tank (4) is provided with a filter box (9), and both sides of the inside of the filter box (9) are provided with filter screens (11), one end of the heat absorption pipe (6) penetrates through the top surface of the water tank (4) and is provided with a connecting pipe (8), and one end of the connecting pipe (8) extends into the inside of the filter box (9), one side of the kiln body (1) is provided with a drying box (17), and the top surface of the drying box (17) is provided with an exhaust pipe (16), the filter box (9) is connected with the drying box (17) through an air guide pipe (13), an axle seat is arranged at the middle position of one side of the inner wall of the filter box (9), a rotating rod (12) penetrates through the filter screen (11) in the axle seat, a cleaning brush (10) is arranged on one side of the rotating rod (12) and located on the filter screen (11), a motor (18) is mounted on one side of the inner wall of the filter box (9) and located below the axle seat, a second gear (20) is fixedly connected to the output end of the motor (18), and the second gear (20) is engaged with a first gear (19) arranged on the rotating rod (12).

2. The sintering kiln waste heat recovery and recycling device according to claim 1, characterized in that, One side of the top surface of the water tank (4) is provided with a water inlet pipe (5), one side surface of the water tank (4) is provided with a drain pipe (14), and a valve (15) is mounted on the drain pipe (14).

3. The sintering kiln waste heat recovery and recycling device according to claim 1, characterized in that, The front end surface of the filter box (9) is provided with a movable plate (22), and the movable plate (22) is fixedly connected with the filter box (9) through screws.

4. The sintering kiln waste heat recovery and recycling device according to claim 1, characterized in that, The filter screen (11) is provided with two, and the two filter screens (11) are evenly distributed on both sides of the inside of the filter box (9), and the cleaning brush (10) is matched with the filter screen (11).

5. The sintering kiln waste heat recovery and recycling device according to claim 1, characterized in that, The front end surface of the drying box (17) is provided with box doors (21) on both sides, and the box doors (21) are hinged to the drying box (17) through hinges.

6. The sintering kiln waste heat recovery and recycling device according to claim 1, characterized in that, The heat conduction block (7) is provided with a plurality of, and the plurality of heat conduction blocks (7) are evenly distributed on the outer surface of the heat absorption pipe (6).

7. The sintering kiln waste heat recovery and recycling device according to claim 2, characterized in that, The drain pipe (14) is fixedly connected with the kiln body (1) through a pipe clamp.

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