Efficient and energy-saving lime rotary kiln preheating device

Abstract

The utility model relates to the field of rotary kiln equipment, in particular to an efficient and energy-saving lime rotary kiln preheating device which comprises a feeding pipeline, a feeding notch is fixedly formed in the upper side of the surface of the feeding pipeline, and a feeding connector is fixedly connected to the lower side of the surface of the feeding pipeline. A first smoke exhaust pipe is fixedly connected to the position, located on the right side of the feeding notch, of the surface of the feeding pipeline, a transmission shaft is arranged in the feeding pipeline, conveying blades are fixedly installed on the surface of the transmission shaft, a first driving motor is fixedly installed at the left end of the feeding pipeline, and a second smoke exhaust pipe is fixedly connected to the position, located on the left side of the feeding notch, of the surface of the feeding pipeline. The conveying blades are controlled by the first driving motor to feed materials, materials are preheated in cooperation with hot smoke input by the first smoke exhaust pipe, feeding and material preheating work can be conveniently conducted at the same time, and therefore the time for heating the materials by the lime rotary kiln in the machining process is shortened, the hot smoke generated in the machining process is fully utilized, and the machining efficiency is improved. And the working efficiency of the equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of rotary kiln equipment, and in particular to a high-efficiency and energy-saving preheating device for lime rotary kilns. Background Technology

[0002] A rotary kiln for lime production is an industrial kiln used to calcine limestone to produce quicklime. It is driven by a transmission device to rotate the furnace cylinder, allowing the material to move forward at an angle within the cylinder to complete the sintering or calcination process, ultimately producing lime or other mineral products. Its high production efficiency, low energy consumption, environmental friendliness, stability, and adaptability make it widely used in the production of lime and other mineral products.

[0003] For example, patent number (CN206113623U) discloses a rotary kiln device, including a discharge cylinder with a discharge hole on its wall. The rotary kiln device also includes a discharge hood with an inlet and a outlet, the inlet of which is connected to the outlet. The rotary kiln device in this utility model solves the problem of low safety performance of existing rotary kiln devices. Currently, when lime rotary kilns are in operation, the heating time of the material inside the kiln is relatively long, the equipment consumes a lot of energy, which affects the processing efficiency of the lime rotary kiln. In addition, a lot of hot flue gas is generated during the processing, and some of the heat is dissipated with the hot flue gas, resulting in a certain amount of energy waste.

[0004] Therefore, considering that the above-mentioned lime rotary kiln has a long material heating time, high equipment energy consumption, and affects the processing efficiency of the lime rotary kiln, and that some flue gas heat energy is dissipated during the processing, resulting in a certain amount of energy waste, a high-efficiency and energy-saving lime rotary kiln preheating device can be designed. Utility Model Content

[0005] To overcome the problems of long heating time and high energy consumption of lime rotary kilns, which affect the processing efficiency of lime rotary kilns and cause some energy waste due to the dissipation of some flue gas heat during processing.

[0006] The technical solution of this utility model is as follows: a high-efficiency and energy-saving rotary kiln preheating device for lime, including a feeding pipe, a feeding trough fixedly installed on the upper side of the feeding pipe, a feeding connection port fixedly connected to the lower side of the feeding pipe, a first exhaust pipe fixedly connected to the right side of the feeding trough on the surface of the feeding pipe, a drive shaft installed inside the feeding pipe, conveying blades fixedly installed on the surface of the drive shaft, a first drive motor fixedly installed at the left end of the feeding pipe, a second exhaust pipe fixedly connected to the left side of the feeding trough on the surface of the feeding pipe, a flue gas pretreatment box installed on the second exhaust pipe, a suction fan fixedly installed inside the second exhaust pipe on the side of the flue gas pretreatment box, and a filter screen plate installed inside the flue gas pretreatment box.

[0007] Preferably, exhaust pipe one can transmit the hot flue gas generated by the rotary kiln body to the feed pipe for preheating the material. Drive motor one can drive the transmission shaft to rotate, so that the conveyor blades push the material from the feed inlet into the rotary kiln body, facilitating simultaneous feeding and material preheating. The suction fan can drive airflow and guide the flue gas to be discharged from exhaust pipe two. The protective net and dustproof net can prevent material fragments inside the feed pipe from entering exhaust pipe two. The filter plate can perform preliminary filtration of the flue gas, and the filter plate is easy to disassemble and replace. Drive motor two can drive the connecting shaft to rotate, so that the diverter plate carries the material into the feed pipe. The diverter plate can make the feeding trough semi-closed.

[0008] Preferably, the rotary kiln body is located at the end of the feed connection port away from the feed pipe, and the rotary kiln body is located at the end of the exhaust pipe away from the feed pipe.

[0009] Preferably, a connecting shaft is provided inside the feeding trough, a flow divider is fixedly installed on the surface of the connecting shaft, and a drive motor is fixedly installed at the right end of the feeding trough.

[0010] Preferably, the connecting shaft is rotatably connected to the feeding trough, the diverter plates are arranged in a ring array, the output end of the second drive motor extends into the interior of the feeding trough and is fixedly connected to the connecting shaft, and the output end of the second drive motor is rotatably connected to the feeding trough.

[0011] Preferably, the drive shaft is rotatably connected to the feed pipe, the conveying blades are designed with a spiral structure, the conveying blades are adapted to the feed pipe, the output end of the drive motor extends into the inside of the feed pipe and is fixedly connected to the drive shaft, and the output end of the drive motor is rotatably connected to the feed pipe.

[0012] Preferably, a protective net is fixedly installed inside the second exhaust pipe on the side of the feed pipe, and a dustproof net is fixedly installed inside the second exhaust pipe on the side of the protective net.

[0013] Preferably, the filter screen is snapped into the flue gas pretreatment box, and the upper end of the filter screen extends to the outside of the flue gas pretreatment box and is fixedly connected to a sealing cover. The sealing cover is detachably connected to the flue gas pretreatment box.

[0014] The beneficial effects of this utility model are:

[0015] This high-efficiency and energy-saving lime rotary kiln preheating device uses a drive motor to control the conveyor blades for feeding, and the hot flue gas input through the exhaust pipe preheats the material. This allows for simultaneous feeding and material preheating, reducing the long heating time of the lime rotary kiln during processing. It fully utilizes the hot flue gas generated during processing, which helps to enhance the equipment's working efficiency and energy saving. The exhaust gas is guided by a suction fan to be discharged from the exhaust pipe, and the filter screen plate performs preliminary filtration of the flue gas, which helps to improve the environmental protection of the lime rotary kiln preheating device. The drive motor controls the diversion plate to drive the material into the feed pipe, while the feeding trough is in a semi-closed state, which can block most of the flue gas from escaping and reduce the impact of the feeding trough on the exhaust pipe. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of the high-efficiency and energy-saving lime rotary kiln preheating device of this utility model.

[0017] Figure 2 The diagram shown is a three-dimensional structural schematic of the feed pipe of this utility model;

[0018] Figure 3 The diagram shown is a three-dimensional structural schematic of the feeding trough of this utility model.

[0019] Figure 4 The diagram shown is a two-dimensional structural schematic of the exhaust pipe of this utility model;

[0020] Figure 5 The diagram shown is a three-dimensional structural schematic of the flue gas pretreatment box of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Feed pipe; 2. Feed trough; 3. Feed connection port; 4. Exhaust pipe one; 5. Drive shaft; 6. Conveyor blades; 7. Drive motor one; 8. Flue gas pretreatment box; 9. Fan; 10. Filter screen; 11. Connecting shaft; 12. Diverter plate; 13. Drive motor two; 14. Protective net; 15. Dustproof net; 16. Sealing cover plate; 17. Exhaust pipe two. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please see Figures 1-5This utility model provides an embodiment of a high-efficiency and energy-saving rotary kiln preheating device for lime, including a feeding pipe 1, a feeding trough 2 fixedly installed on the upper side of the surface of the feeding pipe 1, a feeding connection port 3 fixedly connected to the lower side of the surface of the feeding pipe 1, a first exhaust pipe 4 fixedly connected to the surface of the feeding pipe 1 on the right side of the feeding trough 2, a drive shaft 5 installed inside the feeding pipe 1, a conveying blade 6 fixedly installed on the surface of the drive shaft 5, a first drive motor 7 fixedly installed at the left end of the feeding pipe 1, a second exhaust pipe 17 fixedly connected to the surface of the feeding pipe 1 on the left side of the feeding trough 2, a flue gas pretreatment box 8 installed on the second exhaust pipe 17, a suction fan 9 fixedly installed inside the second exhaust pipe 17 on the side of the flue gas pretreatment box 8, and a filter screen 10 installed inside the flue gas pretreatment box 8.

[0024] Please see Figures 1-3 In this embodiment, a rotary kiln body is provided at the end of the feed inlet 3 away from the feed pipe 1, and a rotary kiln body is provided at the end of the exhaust pipe 4 away from the feed pipe 1. A connecting shaft 11 is provided inside the feeding trough 2, and a flow divider 12 is fixedly installed on the surface of the connecting shaft 11. A second drive motor 13 is fixedly installed at the right end of the feeding trough 2. The connecting shaft 11 is rotatably connected to the feeding trough 2. The flow divider 12 is arranged in a ring array. The output end of the second drive motor 13 extends into the interior of the feeding trough 2 and is fixedly connected to the connecting shaft 11. The output end of the second drive motor 13 is rotatably connected to the feeding trough 2. The transmission shaft 5 is rotatably connected to the feed pipe 1. The conveying blade 6 has a spiral structure design. The conveying blade 6 and the... The feed pipes 1 are mutually compatible. The output end of the drive motor 7 extends into the interior of the feed pipe 1 and is fixedly connected to the transmission shaft 5. The output end of the drive motor 7 is rotatably connected to the feed pipe 1. The hot flue gas generated by the rotary kiln body is transmitted to the feed pipe 1 through the exhaust pipe 4. The drive motor 7 drives the transmission shaft 5 to rotate, so that the conveying blades 6 push the material from the feed inlet 3 into the rotary kiln body. The input hot flue gas preheats the material, which facilitates simultaneous feeding and material preheating. This reduces the long heating time of the material in the lime rotary kiln during processing, makes full use of the hot flue gas generated during processing, and helps to enhance the working efficiency and energy saving of the equipment.

[0025] Please see Figure 1 , Figure 4 and Figure 5In this embodiment, a protective net 14 is fixedly installed inside the second exhaust pipe 17 on the side of the feed pipe 1, and a dustproof net 15 is fixedly installed inside the second exhaust pipe 17 on the side of the protective net 14. The filter plate 10 is snapped into the flue gas pretreatment box 8. The upper end of the filter plate 10 extends to the outside of the flue gas pretreatment box 8 and is fixedly connected to a sealing cover plate 16. The sealing cover plate 16 is detachably connected to the flue gas pretreatment box 8. The airflow is driven by the suction fan 9 to guide the flue gas out of the second exhaust pipe 17. The filter plate 10 performs preliminary filtration of the flue gas to purify the impurity particles in the flue gas. The filter plate 10 is easy to disassemble and replace, which is beneficial to improving the environmental protection of the lime rotary kiln preheating device. The connecting shaft 11 is driven to rotate by the second drive motor 13, so that the diverter plate 12 carries the material into the feed pipe 1. At the same time, the feeding trough 2 is in a semi-closed state, which can block most of the flue gas from escaping and reduce the impact of the feeding trough 2 on the second exhaust pipe 17.

[0026] During operation, the hot flue gas generated by the rotary kiln body is transferred to the feed pipe 1 via the exhaust pipe 4. The drive motor 7 drives the transmission shaft 5 to rotate, causing the conveyor blades 6 to push the material from the feed inlet 3 into the rotary kiln body. The input hot flue gas preheats the material, facilitating simultaneous feeding and material preheating. This reduces the long heating time of the material in the lime rotary kiln during processing. The hot flue gas generated during processing is fully utilized. The suction fan 9 drives the airflow, guiding the flue gas out of the exhaust pipe 17. The filter screen 10 performs preliminary filtration of the flue gas, purifying impurities. The filter screen 10 is easy to disassemble and replace. The drive motor 13 drives the connecting shaft 11 to rotate, causing the diverter 12 to carry the material into the feed pipe 1. At the same time, the feeding trough 2 is in a semi-closed state, which can block most of the flue gas from escaping and reduce the impact of the feeding trough 2 on the exhaust pipe 17.

[0027] Through the above steps, hot flue gas is transmitted to feed pipe 1 via exhaust pipe 4, and the conveyor blades 6 are controlled by drive motor 7 to feed the material. The input hot flue gas is used to preheat the material, which facilitates simultaneous feeding and material preheating. This reduces the long heating time of the lime rotary kiln during processing, and makes full use of the hot flue gas generated during processing. This solves the problems of long heating time, high energy consumption, and reduced processing efficiency of the lime rotary kiln, which also leads to some energy waste due to the dissipation of some flue gas heat during processing.

Claims

1. A high-efficiency and energy-saving rotary kiln preheating device for lime, comprising a feed pipe (1), characterized in that: A feeding trough (2) is fixedly installed on the upper side of the surface of the feeding pipe (1), a feeding connection port (3) is fixedly connected on the lower side of the surface of the feeding pipe (1), a smoke exhaust pipe (4) is fixedly connected on the right side of the feeding trough (2) on the surface of the feeding pipe (1), a drive shaft (5) is installed inside the feeding pipe (1), a conveying blade (6) is fixedly installed on the surface of the drive shaft (5), a drive motor (7) is fixedly installed on the left end of the feeding pipe (1), a smoke exhaust pipe (17) is fixedly connected on the left side of the feeding trough (2) on the surface of the feeding pipe (1), a flue gas pretreatment box (8) is installed on the second smoke exhaust pipe (17), a suction fan (9) is fixedly installed inside the second smoke exhaust pipe (17) on the side of the flue gas pretreatment box (8), and a filter screen (10) is installed inside the flue gas pretreatment box (8).

2. The high-efficiency and energy-saving rotary kiln preheating device for quicklime according to claim 1, characterized in that: The main body of the rotary kiln is located at the end of the feed connection port (3) away from the feed pipe (1), and the main body of the rotary kiln is located at the end of the exhaust pipe (4) away from the feed pipe (1).

3. The high-efficiency and energy-saving rotary kiln preheating device for quicklime according to claim 1, characterized in that: The feeding trough (2) is equipped with a connecting shaft (11), and a diverter plate (12) is fixedly installed on the surface of the connecting shaft (11). A drive motor (13) is fixedly installed on the right end of the feeding trough (2).

4. The high-efficiency and energy-saving rotary kiln preheating device for quicklime according to claim 3, characterized in that: The connecting shaft (11) is rotatably connected to the feeding slot (2), the diverter plate (12) is arranged in a ring array, the output end of the second drive motor (13) extends into the interior of the feeding slot (2) and is fixedly connected to the connecting shaft (11), and the output end of the second drive motor (13) is rotatably connected to the feeding slot (2).

5. The high-efficiency and energy-saving rotary kiln preheating device for quicklime according to claim 1, characterized in that: The drive shaft (5) is rotatably connected to the feed pipe (1), the conveying blade (6) is designed with a spiral structure, the conveying blade (6) is adapted to the feed pipe (1), the output end of the drive motor (7) extends into the inside of the feed pipe (1) and is fixedly connected to the drive shaft (5), and the output end of the drive motor (7) is rotatably connected to the feed pipe (1).

6. The high-efficiency and energy-saving rotary kiln preheating device for quicklime according to claim 1, characterized in that: A protective net (14) is fixedly installed inside the second exhaust pipe (17) on the side of the feed pipe (1), and a dustproof net (15) is fixedly installed inside the second exhaust pipe (17) on the side of the protective net (14).

7. The high-efficiency and energy-saving rotary kiln preheating device for quicklime according to claim 1, characterized in that: The filter screen (10) is snapped into the flue gas pretreatment box (8). The upper end of the filter screen (10) extends to the outside of the flue gas pretreatment box (8) and is fixedly connected to a sealing cover (16). The sealing cover (16) is detachably connected to the flue gas pretreatment box (8).

Images