Rotary furnace with waste gas treatment mechanism

Abstract

The utility model discloses a rotary furnace with a waste gas treatment mechanism, which belongs to the technical field of rotary furnaces and comprises a base, two rotating frames are arranged at the top of the base, a rotary furnace body is rotatably connected to the two rotating frames, a feeding cover is rotatably connected to the end of the rotary furnace body, and a waste gas treatment mechanism is arranged on the feeding cover. The outer side of one rotating frame is fixedly connected with a supporting table, and the top face of the supporting table is fixedly connected with a supporting column. According to the rotary furnace disclosed by the utility model, materials are continuously supplied into the rotary furnace body through the matching of the feeding cylinder, the storage hopper, the servo motor and the spiral conveying rod, meanwhile, waste gas in the rotary furnace body is continuously pumped out by the air suction pipe through the induced draft pump, and dust in the waste gas is filtered by the filter screen in the filter box; and peculiar smell in the waste gas is adsorbed through an activated carbon adsorption plate, so that the function of continuously treating the waste gas is realized.

Description

Technical Field

[0001] This utility model relates to the field of rotary kiln technology, and more specifically, to a rotary kiln with a waste gas treatment mechanism. Background Technology

[0002] A rotary kiln is a thermal equipment used for calcining, roasting, or drying granular and powdery materials. The kiln body is a long steel cylinder lined with refractory material. The kiln body is supported on several pairs of rollers and has an inclination of 3% to 6%. The kiln body is slowly rotated by an electric motor driven by gears. Material is fed from the higher tail end and discharged from the lower head end. Fuel is injected into the head end and burns inside the kiln. Flue gas is discharged from the higher end.

[0003] A search revealed that utility model patent CN219829452U discloses a rotary kiln with a waste gas treatment mechanism, including a rotary kiln body. A flow guiding and treatment component is fixedly installed on the top edge of the rotary kiln body. The flow guiding and treatment component includes a fixed box, a fan, a collection box, a filter screen, an activated carbon adsorption plate, and a ventilation pipe. The fixed box is fixedly installed on the top edge of the rotary kiln body. A fan is fixedly installed in the middle of one side of the fixed box. A collection box is slidably connected to the other side of the fixed box. A filter screen is snapped into the middle of the inner side of the collection box, and an activated carbon adsorption plate is snapped into the inner edge of the collection box. This patent, through the flow guiding and treatment component, facilitates the flow guiding and filtering treatment of waste gas generated during the use of the rotary kiln, preventing odors and impurities in the waste gas from drifting into the outside environment and causing pollution, thereby improving the environmental friendliness of the rotary kiln during use and facilitating the cleaning of collected impurities by the staff later.

[0004] However, the aforementioned patents have the following shortcomings: Generally, rotary kilns process materials continuously, while the aforementioned flow guiding components can only treat waste gas when the material is discharged, resulting in poor practicality; furthermore, it is not convenient to rationally utilize the heat in the waste gas, easily leading to heat waste. Therefore, we propose a rotary kiln with a waste gas treatment mechanism. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a rotary kiln with a waste gas treatment mechanism.

[0006] To solve the above problems, the present invention adopts the following technical solution:

[0007] A rotary kiln with a waste gas treatment mechanism includes a base, two rotating frames on the top of the base, a rotary kiln body rotatably connected to the two rotating frames, a feed cover rotatably connected to the end of the rotary kiln body, a support platform fixedly connected to the outer side of one of the rotating frames, a support column fixedly connected to the top surface of the support platform, the top of the support column connected to the bottom surface of the feed cover, a feeding mechanism and a heat exchange mechanism provided on the feed cover, a filter box fixedly connected to the top surface of the support platform, a filter screen and an activated carbon adsorption plate fitted inside the filter box, an induced draft pump fixedly installed at one end of the filter box, the output end of the induced draft pump extending into the inner cavity of the filter box, and an intake pipe fixedly connected to the input end of the induced draft pump, the end of the intake pipe being fixedly fitted into the inner cavity of the feed cover.

[0008] As a preferred embodiment of the present invention, the feeding mechanism includes a feeding cylinder fixedly sleeved on the feeding cover, one end of the feeding cylinder extending through the inner cavity of the feeding cover to the inner cavity of the rotary kiln body, a storage hopper fixedly connected to the top of the other end of the feeding cylinder, a servo motor fixedly installed at the end of the feeding cylinder, and the output shaft of the servo motor extending to the inner cavity of the feeding cylinder and fixedly connected to a spiral conveying rod.

[0009] As a preferred embodiment of this utility model, the heat exchange mechanism includes a heat exchange cylinder fixedly sleeved on the outside of the feed cylinder, a spiral air guide plate fixedly connected to the inner wall of the heat exchange cylinder, the inner side of the spiral air guide plate being in contact with the outer side of the feed cylinder, an exhaust hole being opened on the top surface of one end of the heat exchange cylinder, and an air guide pipe being fixedly sleeved on the bottom of the other end of the heat exchange cylinder, the end of the air guide pipe being fixedly sleeved to the inner cavity of the other end of the filter box.

[0010] As a preferred embodiment of this utility model, a control panel is fixedly installed on the top surface of the support platform.

[0011] As a preferred embodiment of this utility model, the filter box is hinged to a sealing door on the outside, and the sides of the filter screen and the activated carbon adsorption plate are respectively attached to the inner walls of the filter box and the sealing door.

[0012] In a preferred embodiment of this utility model, the side of the spiral conveyor rod is in contact with the inner wall of the feed cylinder.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] (1) In this utility model, the material is continuously fed into the rotary kiln body through the cooperation of the feeding cylinder, the storage hopper, the servo motor and the screw conveyor rod. At the same time, the exhaust pump is used to continuously extract the exhaust gas from the rotary kiln body through the suction pipe. Meanwhile, the dust in the exhaust gas is filtered by the filter screen in the filter box, and the odor in the exhaust gas is adsorbed by the activated carbon adsorption plate, thus realizing the function of continuous treatment of exhaust gas.

[0015] (2) In this utility model, after the exhaust gas is treated in the filter box, the exhaust gas is introduced into the inner cavity of the heat exchange cylinder through the air guide pipe. The exhaust gas is guided by the spiral air guide plate in the heat exchange cylinder, so that the exhaust gas and the material in the inner cavity of the feed cylinder can exchange heat, thereby preheating the material and ensuring the quality and efficiency of material processing in the rotary kiln. Attached Figure Description

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

[0017] Figure 2 This is a schematic diagram of the overall structure of the back of this utility model;

[0018] Figure 3 This is a cross-sectional schematic diagram of the feed cylinder of this utility model;

[0019] Figure 4 This is a cross-sectional schematic diagram of the filter box of this utility model;

[0020] Figure 5 This is a schematic diagram of the heat exchange cylinder of this utility model.

[0021] Description of the numbers in the figure:

[0022] 1. Base; 2. Rotating frame; 3. Rotary furnace body; 4. Support platform; 5. Support column; 6. Feed cover; 7. Feeding mechanism; 8. Heat exchange mechanism; 9. Filter box; 10. Filter screen; 11. Activated carbon adsorption plate; 12. Exhaust pump; 13. Suction pipe; 14. Feed cylinder; 15. Storage hopper; 16. Servo motor; 17. Spiral conveyor rod; 18. Heat exchange cylinder; 19. Spiral air guide plate; 20. Exhaust port; 21. Air guide pipe; 22. Sealing door; 23. Control panel. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example:

[0027] Please see Figure 1-5 A rotary kiln with a waste gas treatment mechanism includes a base 1, two rotating frames 2 on the top of the base 1, a rotary kiln body 3 rotatably connected to the two rotating frames 2, a feed cover 6 rotatably connected to the end of the rotary kiln body 3, a support platform 4 fixedly connected to the outside of one rotating frame 2, a support column 5 fixedly connected to the top surface of the support platform 4, the top of the support column 5 being connected to the bottom surface of the feed cover 6, a feeding mechanism 7 being provided on the feed cover 6, a heat exchange mechanism 8 being provided on the feeding mechanism 7, a filter box 9 fixedly connected to the top surface of the support platform 4, a filter screen 10 being fitted inside the filter box 9, an activated carbon adsorption plate 11 being fitted inside the filter box 9, an induced draft pump 12 fixedly installed at one end of the filter box 9, the output end of the induced draft pump 12 extending into the inner cavity of the filter box 9, and an intake pipe 13 fixedly connected to the input end of the induced draft pump 12, the end of the intake pipe 13 being fixedly fitted into the inner cavity of the feed cover 6.

[0028] In this embodiment, the base 1 is provided with a drive mechanism to drive the rotary furnace body 3 to rotate, which is the prior art.

[0029] For details, please refer to Figure 1 and Figure 3The feeding mechanism 7 includes a feeding cylinder 14 fixedly sleeved on the feeding cover 6. One end of the feeding cylinder 14 extends through the inner cavity of the feeding cover 6 to the inner cavity of the rotary kiln body 3. A storage hopper 15 is fixedly connected to the top of the other end of the feeding cylinder 14. A servo motor 16 is fixedly installed at the end of the feeding cylinder 14. The output shaft of the servo motor 16 extends into the inner cavity of the feeding cylinder 14 and is fixedly connected to a spiral conveying rod 17.

[0030] In this embodiment, the servo motor 16 drives the spiral conveyor rod 17 to rotate, and the rotation of the spiral conveyor rod 17 drives the material in the storage hopper 15 to be introduced from the feed cylinder 14 into the inner cavity of the rotary furnace body 3.

[0031] For details, please refer to Figures 1 to 5 The heat exchange mechanism 8 includes a heat exchange cylinder 18 fixedly sleeved on the outside of the feed cylinder 14. A spiral air guide plate 19 is fixedly connected to the inner wall of the heat exchange cylinder 18. The inner side of the spiral air guide plate 19 is in contact with the outer side of the feed cylinder 14. An exhaust hole 20 is opened on the top surface of one end of the heat exchange cylinder 18. A guide pipe 21 is fixedly sleeved on the bottom of the other end of the heat exchange cylinder 18. The end of the guide pipe 21 is fixedly sleeved to the inner cavity of the other end of the filter box 9.

[0032] In this embodiment, the exhaust gas is filtered by the filter screen 10 and activated carbon adsorption plate 11 in the filter box 9. The filtered exhaust gas enters the heat exchange cylinder 18, and the spiral guide plate 19 on the inner side of the heat exchange cylinder 18 guides the exhaust gas, increasing the time the exhaust gas flows in the heat exchange cylinder 18 and ensuring the effect of preheating the material by the exhaust gas.

[0033] For details, please refer to Figure 1 A control panel 23 is fixedly installed on the top surface of the support platform 4.

[0034] In this embodiment, the device is controlled via control panel 23.

[0035] For details, please refer to Figure 1 and Figure 4 A sealing door 22 is hinged to the outside of the filter box 9, and the sides of the filter screen 10 and the activated carbon adsorption plate 11 are respectively attached to the inner walls of the filter box 9 and the sealing door 22.

[0036] In this embodiment, the activated carbon adsorption plate 11 is replaced by opening the sealed door 22, and the dust filtered by the filter screen 10 is treated at the same time.

[0037] For details, please refer to Figure 3 The side of the spiral conveyor rod 17 is in contact with the inner wall of the feed cylinder 14.

[0038] In this embodiment, the spiral conveyor rod 17 is designed to smoothly guide the material from the feed cylinder 14 into the inner cavity of the rotary kiln body 3.

[0039] Working principle: In operation, the rotary kiln body 3 is first started to rotate, simultaneously activating the servo motor 16 to drive the screw conveyor 17 to rotate, and placing the material to be processed into the storage hopper 15. The material in the storage hopper 15 then enters the feed cylinder 14, and the rotating screw conveyor 17 carries the material into the rotary kiln body 3 for processing. Then, the induced draft pump 12 is activated, causing the suction pipe 13 to generate suction, which is used to process the material inside the rotary kiln body 3. The generated waste gas is introduced into the inner cavity of the filter box 9. The filter screen 10 in the inner cavity of the filter box 9 filters the dust in the waste gas, and the activated carbon adsorption plate 11 adsorbs the odor in the waste gas. Finally, the treated waste gas is introduced into the heat exchange cylinder 18 through the air guide pipe 21. The spiral air guide plate 19 in the heat exchange cylinder 18 guides the waste gas, so that the waste gas and the material in the inner cavity of the feed cylinder 14 exchange heat to achieve preheating of the material. The preheated waste gas is discharged from the exhaust port 20.

[0040] 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 its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A rotary kiln with a waste gas treatment mechanism, comprising a base (1), characterized in that: Two rotating frames (2) are provided on the top of the base (1). A rotary furnace body (3) is rotatably connected to the two rotating frames (2). A feed cover (6) is rotatably connected to the end of the rotary furnace body (3). A support platform (4) is fixedly connected to the outside of one of the rotating frames (2). A support column (5) is fixedly connected to the top surface of the support platform (4). The top of the support column (5) is connected to the bottom surface of the feed cover (6). A feeding mechanism (7) is provided on the feed cover (6). A heat exchanger is provided on the feeding mechanism (7). The structure (8) has a filter box (9) fixedly connected to the top surface of the support platform (4). The filter box (9) is fitted with a filter screen (10) and an activated carbon adsorption plate (11). A blower pump (12) is fixedly installed at one end of the filter box (9). The output end of the blower pump (12) extends into the inner cavity of the filter box (9). The input end of the blower pump (12) is fixedly connected to a suction pipe (13). The end of the suction pipe (13) is fixedly fitted into the inner cavity of the feed cover (6).

2. A rotary kiln with a waste gas treatment mechanism according to claim 1, characterized in that: The feeding mechanism (7) includes a feeding cylinder (14) fixedly sleeved on the feeding cover (6). One end of the feeding cylinder (14) extends through the inner cavity of the feeding cover (6) to the inner cavity of the rotary kiln body (3). A storage hopper (15) is fixedly connected to the top of the other end of the feeding cylinder (14). A servo motor (16) is fixedly installed at the end of the feeding cylinder (14). The output shaft of the servo motor (16) extends into the inner cavity of the feeding cylinder (14) and is fixedly connected to a spiral conveying rod (17).

3. A rotary kiln with a waste gas treatment mechanism according to claim 2, characterized in that: The heat exchange mechanism (8) includes a heat exchange cylinder (18) fixedly sleeved on the outside of the feed cylinder (14). A spiral air guide plate (19) is fixedly connected to the inner wall of the heat exchange cylinder (18). The inner side of the spiral air guide plate (19) is in contact with the outer side of the feed cylinder (14). An exhaust hole (20) is opened on the top surface of one end of the heat exchange cylinder (18). A gas guide pipe (21) is fixedly sleeved on the bottom of the other end of the heat exchange cylinder (18). The end of the gas guide pipe (21) is fixedly sleeved to the inner cavity of the other end of the filter box (9).

4. A rotary kiln with a waste gas treatment mechanism according to claim 1, characterized in that: A control panel (23) is fixedly installed on the top surface of the support platform (4).

5. A rotary kiln with a waste gas treatment mechanism according to claim 1, characterized in that: The filter box (9) is hinged to a sealing door (22) on the outside, and the sides of the filter screen (10) and the activated carbon adsorption plate (11) are respectively attached to the inner walls of the filter box (9) and the sealing door (22).

6. A rotary kiln with a waste gas treatment mechanism according to claim 2, characterized in that: The side of the spiral feed rod (17) is in contact with the inner wall of the feed cylinder (14).

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