Energy-saving and environment-friendly external heating type rotary kiln

Abstract

The utility model discloses an energy -conserving and environment -friendly external heating type rotary kiln belongs to rotary kiln equipment technical field, including support frame, the inboard fixed mounting of support frame has the support station, the upper fixed mounting of support station has the heat preservation shell, and the rotation installation of steel cylinder has in the central position of heat preservation shell, and the inboard fixed mounting of steel cylinder has a plurality of heat exchange fins in heat preservation shell's outside, and the side of support frame is provided with the feeding pipe, and the side fixed mounting of support frame away from the feeding pipe has the discharge bin, the utility model discloses through setting energy -conserving processing structure, can utilize the heat of the residual in the flue gas after work through the cooperation of water pipe and nickel -base alloy heat exchange tube etc.

Description

Technical Field

[0001] This utility model belongs to the technical field of rotary kiln equipment, specifically relating to an energy-saving and environmentally friendly externally heated rotary kiln. Background Technology

[0002] Rotary kilns are used in the metallurgical industry for the magnetization roasting of lean iron ore in steel plants. The operation of a rotary kiln consists of processes including gas flow, fuel combustion, heat transfer, and material movement. The rotary kiln ensures complete combustion of fuel, effectively transferring the heat from combustion to the material. Upon receiving this heat, the material undergoes a series of physicochemical changes, ultimately forming the finished clinker.

[0003] Existing externally heated rotary kilns cannot utilize the residual heat in the flue gas after operation, which easily leads to energy waste. They are also inconvenient to handle any clumps or other substances that may be present in the raw materials, thus reducing the working capacity of the rotary kiln. Furthermore, they cannot temporarily store the produced products, and the output position of the products cannot be adjusted, thereby reducing the practicality of the rotary kiln. Utility Model Content

[0004] To address the problems mentioned in the background section, this invention provides an energy-saving and environmentally friendly externally heated rotary kiln, characterized by high working capacity and strong practicality.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an energy-saving and environmentally friendly externally heated rotary kiln, comprising a support frame, a support platform fixedly installed on the inner side of the support frame, an insulation shell fixedly installed above the support platform, a steel cylinder rotatably installed near the center of the insulation shell, multiple heat exchange fins fixedly installed on the outer side of the steel cylinder and on the inner side of the insulation shell, a feed pipe provided on one side of the support frame, a discharge bin fixedly installed on the side of the support frame away from the feed pipe, a flue gas inlet fixedly installed below the insulation shell and on one side of the support platform, a third motor fixedly installed below the insulation shell and on the side of the flue gas inlet away from the support platform, a lower gear fixedly installed on the output end of the third motor away from the flue gas inlet, an upper gear fixedly installed on the outer side of the steel cylinder and above the lower gear, an energy-saving treatment structure provided on the side of the feed pipe near the support frame, and a storage and conveying structure provided below the discharge bin; The energy-saving treatment structure includes a fixed box. The fixed box is fixedly installed on the top of the heat-insulating shell. A conveying pipe is fixedly installed on one side of the fixed box. A flue gas outlet is fixedly installed on the side of the fixed box away from the conveying pipe. A water inlet pipe is fixedly installed on the top of the fixed box. A water outlet pipe is fixedly installed on the top of the fixed box and on the side of the water inlet pipe. A nickel-based alloy heat exchange tube is fixedly installed below the water inlet pipe and the water outlet pipe and inside the fixed box. A treatment component is provided below the flue gas outlet.

[0006] Preferably, the processing assembly includes a support plate, and the support plate is fixedly installed on the side of the fixed box away from the conveying pipe and below the flue gas outlet. A processing box is fixedly installed between the support plate, the feed pipe and the support frame, and a filter screen is fixedly installed on the side of the processing box near the steel cylinder.

[0007] Preferably, a first motor is fixedly installed on the side of the processing box away from the steel cylinder, and multiple breaking rods are fixedly installed on the outside of the output end of the first motor and on the inside of the processing box.

[0008] Preferably, a threaded block is threadedly installed on the inner side of the end of the support plate away from the fixed box.

[0009] Preferably, the storage and conveying structure includes a support base, a support base is fixedly installed below the support frame, a storage box is provided inside the support base, a flexible hose is fixedly connected between the storage box and the discharge hopper, a discharge pipe is fixedly installed on one side of the storage box, and a solenoid valve is fixedly installed near the center of the discharge pipe.

[0010] Preferably, a second motor is fixedly installed on the inner side of the support base and on the side of the storage box away from the discharge pipe, and a lead screw is fixedly installed on one side of the second motor and at the bottom of the storage box.

[0011] Preferably, the inner bottom surface of the support base is in contact with the outer bottom surface of the storage box.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, by setting up an energy-saving treatment structure, can utilize the residual heat in the flue gas after operation through the cooperation of structures such as the water inlet pipe and nickel-based alloy heat exchange tube, thereby reducing energy waste and making the rotary kiln more energy-efficient and environmentally friendly. In addition, it can treat any clumps or other substances that may exist in the raw materials through the cooperation of structures such as the crushing rod and the filter screen, thereby improving the working capacity of the rotary kiln.

[0013] 2. By setting up a storage and conveying structure, this utility model can temporarily store the produced products through the cooperation of storage boxes and hoses, thereby better coping with different working conditions. In addition, the output position of the products can be adjusted through the cooperation of screws and other structures, thereby improving the practicality of the rotary kiln. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a three-dimensional sectional view of the present invention; Figure 3 This is a three-dimensional sectional view of the energy-saving treatment structure of this utility model; Figure 4This is a three-dimensional sectional view of the storage and conveying structure of this utility model.

[0015] In the diagram: 1. Support frame; 2. Feed pipe; 3. Upper gear; 4. Energy-saving treatment structure; 41. Fixed box; 42. Water inlet pipe; 43. Flue gas outlet; 44. Treatment component; 441. Threaded block; 442. Support plate; 443. Filter screen; 444. Treatment box; 445. Crushing rod; 446. First motor; 45. Nickel-based alloy heat exchange tube; 46. Conveying pipe; 47. Water outlet pipe; 5. Insulated shell; 6. Discharge bin; 7. Steel cylinder; 8. Heat exchange fins; 9. Storage and conveying structure; 91. Support base; 92. Second motor; 93. Lead screw; 94. Storage box; 95. Discharge pipe; 96. Solenoid valve; 97. Hose; 10. Support platform; 11. Flue gas inlet; 12. Third motor; 13. Lower gear. Detailed Implementation

[0016] 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.

[0017] Example 1 Please see Figure 1-4 This utility model provides the following technical solution: an energy-saving and environmentally friendly externally heated rotary kiln, including a support frame 1, a support platform 10 fixedly installed on the inner side of the support frame 1, an insulation shell 5 fixedly installed above the support platform 10, a steel cylinder 7 rotatably installed near the center of the insulation shell 5, multiple heat exchange fins 8 fixedly installed on the outer side of the steel cylinder 7 and inside the insulation shell 5, a feed pipe 2 provided on one side of the support frame 1, and a discharge bin 6 fixedly installed on the side of the support frame 1 away from the feed pipe 2. A flue gas inlet 11 is fixedly installed below the shell 5 and on one side of the support platform 10. A third motor 12 is fixedly installed below the heat-insulating shell 5 and on the side of the flue gas inlet 11 away from the support platform 10. A lower gear 13 is fixedly installed on the side of the output end of the third motor 12 away from the flue gas inlet 11. An upper gear 3 is fixedly installed on the outside of the steel cylinder 7 and above the lower gear 13. An energy-saving treatment structure 4 is provided on the side of the feed pipe 2 near the support frame 1. A storage and conveying structure 9 is provided below the discharge bin 6. The energy-saving treatment structure 4 includes a fixed box 41. The fixed box 41 is fixedly installed on the top of the heat-insulating shell 5. A conveying pipe 46 is fixedly installed on one side of the fixed box 41. A flue gas outlet 43 is fixedly installed on the side of the fixed box 41 away from the conveying pipe 46. A water inlet pipe 42 is fixedly installed on the top of the fixed box 41. A water outlet pipe 47 is fixedly installed on the top of the fixed box 41 and on the side of the water inlet pipe 42. A nickel-based alloy heat exchange tube 45 is fixedly installed below the water inlet pipe 42 and the water outlet pipe 47 and inside the fixed box 41. A treatment component 44 is provided below the flue gas outlet 43.

[0018] Specifically, the processing component 44 includes a support plate 442. The support plate 442 is fixedly installed on the side of the fixed box 41 away from the conveying pipe 46 and below the flue gas outlet 43. A processing box 444 is fixedly installed between the support plate 442, the feed pipe 2 and the support frame 1. A filter screen 443 is fixedly installed on the side of the processing box 444 near the steel cylinder 7. By adopting the above technical solution, the filter screen 443 and other structures can filter out any clumps or other substances that may exist in the raw materials, thereby reducing the possibility of adverse effects on the operation of the rotary kiln.

[0019] Specifically, a first motor 446 is fixedly installed on the side of the processing box 444 away from the steel cylinder 7. Multiple crushing rods 445 are fixedly installed on the outside of the output end of the first motor 446 and on the inside of the processing box 444. By adopting the above technical solution, the crushing rods 445 and other structures can be used to crush any clumps or other materials that may exist in the raw materials, so that they can pass through the filter screen 443.

[0020] Specifically, a threaded block 441 is installed on the inner side of the end of the support plate 442 away from the fixed box 41 by means of threads. By adopting the above technical solution, the staff can unscrew the threaded block 441 to clean and maintain the inner side of the processing box 444 when needed, thereby reducing the inconvenience of the work.

[0021] In this embodiment, when an externally heated rotary kiln is required, an external power supply is connected, and the flue gas inlet 11 and the flue gas outlet 43 in the energy-saving treatment structure 4 are connected to the corresponding flue gas pipes. The feed pipe 2 is connected to the feeding pipe, and the water inlet pipe 42 and the water outlet pipe 47 are connected to the corresponding water supply pipes. The raw material is fed into the treatment box 444 in the treatment component 44 through the feed pipe 2. The filter screen 443 filters the raw material. In addition, the first motor 446 can be started to drive each crushing rod 445 to rotate, thereby crushing the condensate and other objects intercepted by the filter screen 443. Then the raw material enters the steel cylinder 7, and the high-temperature flue gas is sent into the heat-insulating shell 5 through the flue gas inlet 11. At the same time, the third motor 12 is started, and the high-temperature flue gas exchanges heat with the raw material through each heat exchange fin 8, thereby processing the raw material. The third motor 12 drives the lower gear 13 to rotate, and then drives the steel cylinder 7 and the raw material inside to rotate through the upper gear 3, thereby making the heat exchange more uniform.

[0022] After use, the flue gas passes through the conveying pipe 46 into the fixed box 41, and the water that needs to be heated also enters the nickel-based alloy heat exchange tube 45 through the water inlet pipe 42, thereby exchanging heat with the flue gas and using the residual heat in the flue gas to heat the water, reducing energy waste. The heated water is discharged through the water outlet pipe 47, while the processed product enters the discharge hopper 6 for use. The support frame 1 and the heat insulation shell 5 are rotatably connected to the steel cylinder 7. The support platform 10 plays a supporting role. When needed, the staff can unscrew the threaded block 441 on the support plate 442 to clean and maintain the inside of the processing box 444.

[0023] Example 2 The difference between this embodiment and embodiment 1 is that the storage and conveying structure 9 includes a support base 91. The support base 91 is fixedly installed below the support frame 1. A storage box 94 is provided on the inner side of the support base 91. A hose 97 is fixedly connected between the storage box 94 and the discharge bin 6. A discharge pipe 95 is fixedly installed on one side of the storage box 94. A solenoid valve 96 is fixedly installed near the center of the discharge pipe 95. By adopting the above technical solution, the produced products can be temporarily stored through the cooperation of the storage box 94 and the hose 97, thereby better coping with different working conditions.

[0024] Specifically, a second motor 92 is fixedly installed on the inner side of the support base 91 and on the side of the storage box 94 away from the discharge pipe 95. A lead screw 93 is fixedly installed on one side of the second motor 92 and at the bottom of the storage box 94. By adopting the above technical solution, the output position of the product can be adjusted by the cooperation of the lead screw 93 and other structures, so as to better cope with different working conditions.

[0025] Specifically, the inner bottom surface of the support base 91 and the outer bottom surface of the storage box 94 are in contact with each other. By adopting the above technical solution, the rotary kiln can limit the movement of the storage box 94 through the support base 91, thereby preventing the storage box 94 from rotating and shifting when the screw 93 drives the storage box 94 to move.

[0026] In this embodiment, after the processed product is discharged from the discharge hopper 6, it will pass through the hose 97 in the storage and conveying structure 9 and enter the storage box 94 for temporary storage. If temporary storage is not required, the solenoid valve 96 can be opened to discharge the product through the discharge pipe 95. If it is necessary to adjust the position of the product discharge, the operator can start the second motor 92, which will drive the lead screw 93 to rotate. The lead screw 93 is threadedly connected to the storage box 94, and the outer bottom surface of the storage box 94 is in contact with the inner bottom surface of the support base 91. Therefore, the lead screw 93 drives the storage box 94 and other structures to move, thereby adjusting the position of the discharge pipe 95 and thus adjusting the position of the product discharge.

[0027] The working principle and usage process of this utility model are as follows: When an externally heated rotary kiln is required, connect the external power supply, connect the flue gas inlet 11 and the flue gas outlet 43 in the energy-saving treatment structure 4 to the corresponding flue gas pipe, connect the feed pipe 2 to the feeding pipe, and connect the water inlet pipe 42 and the water outlet pipe 47 to the corresponding water supply pipe. The raw material is fed into the treatment box 444 in the treatment component 44 through the feed pipe 2. The filter screen 443 filters the raw material. In addition, the first motor 446 can be started, thereby driving each crushing rod 445 to rotate, thereby crushing the condensate and other objects intercepted by the filter screen 443. Then the raw material enters the steel cylinder 7, and the high-temperature flue gas is sent into the heat-insulating shell 5 through the flue gas inlet 11. At the same time, the third motor 12 is started. The high-temperature flue gas exchanges heat with the raw material through each heat exchange fin 8, thereby processing the raw material. The third motor 12 drives the lower gear 13 to rotate, and then drives the steel cylinder 7 and the raw material inside to rotate through the upper gear 3, thereby making the heat exchange more uniform.

[0028] After use, the flue gas passes through the conveying pipe 46 into the fixed box 41, and the water that needs to be heated also enters the nickel-based alloy heat exchange tube 45 through the water inlet pipe 42, thereby exchanging heat with the flue gas and using the residual heat in the flue gas to heat the water, reducing energy waste. The heated water is discharged through the water outlet pipe 47, while the processed product enters the discharge hopper 6 for use. The support frame 1 and the heat insulation shell 5 are rotatably connected to the steel cylinder 7. The support platform 10 plays a supporting role. When needed, the staff can unscrew the threaded block 441 on the support plate 442 to clean and maintain the inside of the processing box 444.

[0029] After the processed product is discharged from the discharge hopper 6, it will pass through the hose 97 in the storage and conveying structure 9 and enter the storage box 94 for temporary storage. If temporary storage is not required, the solenoid valve 96 can be opened to discharge the product through the discharge pipe 95. If the position of the product discharge needs to be adjusted, the operator can start the second motor 92, which will drive the lead screw 93 to rotate. The lead screw 93 is threadedly connected to the storage box 94, and the outer bottom surface of the storage box 94 is in contact with the inner bottom surface of the support base 91. Therefore, the lead screw 93 drives the storage box 94 and other structures to move, thereby adjusting the position of the discharge pipe 95 and thus adjusting the position of the product discharge.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving and environmentally friendly externally heated rotary kiln, comprising a support frame (1), a support platform (10) fixedly installed on the inner side of the support frame (1), an insulation shell (5) fixedly installed above the support platform (10), a steel cylinder (7) rotatably installed near the center of the insulation shell (5), a plurality of heat exchange fins (8) fixedly installed on the outer side of the steel cylinder (7) and located on the inner side of the insulation shell (5), a feed pipe (2) is provided on one side of the support frame (1), and a support frame (1) is fixedly installed on the side away from the feed pipe (2). A discharge hopper (6) is fixedly installed. A flue gas inlet (11) is fixedly installed below the insulation shell (5) and on one side of the support platform (10). A third motor (12) is fixedly installed below the insulation shell (5) and on the side of the flue gas inlet (11) away from the support platform (10). A lower gear (13) is fixedly installed on the side of the output end of the third motor (12) away from the flue gas inlet (11). An upper gear (3) is fixedly installed on the outside of the steel cylinder (7) and above the lower gear (13). The feature is that: An energy-saving treatment structure (4) is provided on the side of the feed pipe (2) near the support frame (1), and a storage and conveying structure (9) is provided below the discharge bin (6). The energy-saving treatment structure (4) includes a fixed box (41), a fixed box (41) is fixedly installed above the heat-insulating shell (5), a conveying pipe (46) is fixedly installed on one side of the fixed box (41), a flue gas outlet (43) is fixedly installed on the side of the fixed box (41) away from the conveying pipe (46), a water inlet pipe (42) is fixedly installed above the fixed box (41), a water outlet pipe (47) is fixedly installed above the fixed box (41) and on the side of the water inlet pipe (42), a nickel-based alloy heat exchange tube (45) is fixedly installed below the water inlet pipe (42) and the water outlet pipe (47) and inside the fixed box (41), and a treatment component (44) is provided below the flue gas outlet (43).

2. The energy-saving and environmentally friendly externally heated rotary kiln according to claim 1, characterized in that: The processing assembly (44) includes a support plate (442). The support plate (442) is fixedly installed on the side of the fixed box (41) away from the conveying pipe (46) and below the flue gas outlet (43). A processing box (444) is fixedly installed between the support plate (442), the feed pipe (2) and the support frame (1). A filter screen (443) is fixedly installed on the side of the processing box (444) near the steel cylinder (7).

3. The energy-saving and environmentally friendly externally heated rotary kiln according to claim 2, characterized in that: A first motor (446) is fixedly installed on the side of the processing box (444) away from the steel cylinder (7). Multiple breaking rods (445) are fixedly installed on the outer side of the output end of the first motor (446) and on the inner side of the processing box (444).

4. The energy-saving and environmentally friendly externally heated rotary kiln according to claim 2, characterized in that: A threaded block (441) is threadedly installed on the inner side of the end of the support plate (442) away from the fixed box (41).

5. The energy-saving and environmentally friendly externally heated rotary kiln according to claim 1, characterized in that: The storage and conveying structure (9) includes a support base (91). The support base (91) is fixedly installed below the support frame (1). A storage box (94) is provided on the inner side of the support base (91). A hose (97) is fixedly connected between the storage box (94) and the discharge bin (6). A discharge pipe (95) is fixedly installed on one side of the storage box (94). A solenoid valve (96) is fixedly installed near the center of the discharge pipe (95).

6. The energy-saving and environmentally friendly externally heated rotary kiln according to claim 5, characterized in that: A second motor (92) is fixedly installed on the inner side of the support base (91) and on the side of the storage box (94) away from the discharge pipe (95). A lead screw (93) is fixedly installed on one side of the second motor (92) and at the bottom of the storage box (94).

7. The energy-saving and environmentally friendly externally heated rotary kiln according to claim 6, characterized in that: The inner bottom surface of the support base (91) and the outer bottom surface of the storage box (94) are in contact with each other.

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