A cooling and drying device for chemical fertilizer production

Abstract

The utility model discloses a cooling drying device for chemical fertilizer production, including cooling drying rotary drum, cooling drying rotary drum includes drying section and cooling section, and drying section is provided with hot -blast drying device, and hot -blast drying device includes inner transmission material pipe, and the end of inner transmission material pipe is connected with air inlet pipe and feeding screw respectively in the fixed device of feeding, and air inlet pipe is connected with the hot -blast supply device of outside, and the hot -blast passage is formed between inner transmission material pipe and cooling drying rotary drum, and the opening of hot -blast passage is set in drying section and cooling section junction, and the end of feeding fixed device is provided with exhaust pipe in hot -blast passage, and the cooling pipe bundle is provided in cooling section, and the cooling pipe bundle is provided with the cold -blast circulation pipe, and the cold -blast generator device of air inlet pipe outside is connected in the cooling pipe bundle, and the cooling drying rotary drum includes drying section and cooling section in this application, and the cooling and drying of chemical fertilizer particle can be carried out simultaneously through drying section and cooling section, and the working efficiency is improved by reducing the process.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment technology, and in particular to a cooling and drying device for fertilizer production. Background Technology

[0002] During the manufacturing process of fertilizer, after granulation, it needs to be sent to a dryer for drying to remove moisture from the fertilizer granules. After drying, the fertilizer cannot be directly bagged due to the high temperature and needs to be cooled. The cooling of fertilizer granules is achieved in a cooler. After granulation, fertilizer granules need to be cooled and dried by both a dryer and a cooler. It takes two or more types of equipment and two processes to complete the process, which is complicated and has low production efficiency. Utility Model Content

[0003] The technical problem this utility model aims to solve is that in existing fertilizer production processes, after fertilizer granulation, the fertilizer granules need to be cooled and dried using a dryer and a cooler, requiring two or more types of equipment and two processes. This is cumbersome and inefficient. This application provides a cooling and drying device for fertilizer production, including a cooling and drying rotary drum. The two ends of the rotary drum are rotatably mounted to a feeding fixing device and a discharging fixing device, respectively. A rotary drive device is provided externally to the rotary drum. The rotary drum includes a drying section and... The cooling section and the drying section are equipped with a hot air drying device, which includes an inner material transfer pipe. The inner material transfer pipe is located at the end of the feeding fixed device and is connected to the air inlet pipe and the feeding screw respectively. The air inlet pipe is connected to the external hot air supply device. A hot air channel is formed between the inner material transfer pipe and the cooling drying rotary drum. The opening of the hot air channel is located at the junction of the drying section and the cooling section. An exhaust pipe is set at the end of the hot air channel at the feeding fixed device. A cooling tube bundle is set in the cooling section. A cold air circulation pipe is set in the cooling tube bundle. The cold air circulation pipe is connected to the external cold air generator.

[0004] An air pump is installed in the exhaust duct.

[0005] A vent can be installed on the material discharge fixing device, and a valve can be installed at the vent.

[0006] The inner wall of the cooling and drying rotary drum is equipped with lifting plates at a specific angle, and the inner wall of the inner conveying pipe is also equipped with lifting plates at a specific angle.

[0007] The end of the feeding fixing device is provided with a feeding screw, and the bottom of the discharging fixing device is provided with a discharge port.

[0008] The rotary drive device includes a motor reducer and a drive gear driven by the motor. The cooling and drying rotary drum is provided with a ring gear that cooperates with the drive gear.

[0009] The beneficial effects of the technical solution provided by this utility model embodiment include at least the following:

[0010] The cooling and drying rotary drum in this application includes a drying section and a cooling section. The drying section is equipped with a hot air drying device, and a cold air circulation pipe is installed inside the cooling tube bundle. The hot air drying device includes an inner material transfer pipe, and a hot air channel is formed between the inner material transfer pipe and the cooling and drying rotary drum. The opening of the hot air channel is located at the junction of the drying section and the cooling section. An exhaust pipe is installed at the end of the hot air channel located at the feeding fixed device. The hot air entering the inner material transfer pipe through the air inlet pipe carries away the moisture of the fertilizer particles for drying. The hot air carrying moisture is discharged from the hot air channel and the exhaust pipe. The fertilizer particles entering the cooling section come into contact with the cooling tube bundle for cooling. By using the drying section and the cooling section, the cooling and drying of fertilizer particles can be carried out simultaneously, reducing the number of processes and improving work efficiency. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0014] In the attached diagram, the components are: 1. Cooling and drying rotary drum; 2. Feeding fixing device; 3. Discharge fixing device; 4. Rotary drive device; 5. Feeding screw; 6. Discharge port; 7. Lifting plate; 4-1. Motor reducer; 4-2. Drive gear; 4-3. Ring gear; 8. Support roller device; 1-1. Drying section; 1-2. Cooling section; 9. Inner material transfer pipe; 10. Air inlet pipe; 11. Hot air channel; 12. Exhaust pipe; 13. Air pump; 14. Cooling tube bundle; 15. Cold air circulation pipe; 16. Ventilation outlet; 17. Valve. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0016] like Figure 1-2As shown, this utility model provides a cooling and drying device for fertilizer production, including a cooling and drying rotary drum 1. The two ends of the cooling and drying rotary drum 1 are rotatably mounted to a feeding fixing device 2 and a discharging fixing device 3, respectively. A rotary drive device 4 is provided outside the cooling and drying rotary drum 1. The feeding fixing device 2 is located at the feeding end of the cooling and drying rotary drum 1 and is a stationary component. A feeding screw 5 is provided at the end of the feeding fixing device 2, through which the material to be dried and cooled is fed into the cooling and drying rotary drum 1. The discharging fixing device 3 is located at the discharging end of the cooling and drying rotary drum 1 and is a stationary component. A discharge port 6 is provided below the discharging fixing device 3, through which the dried and cooled material is discharged. A lifting plate 7 at a specific angle is provided on the inner wall of the cooling and drying rotary drum 1. As the cooling and drying rotary drum 1 rotates, the lifting plate 7 pushes the material inside the cooling and drying rotary drum 1 forward and throws it upward, causing the material to flow from the feeding end to the discharging end of the cooling and drying rotary drum 1.

[0017] The rotary drive device 4 includes a motor reducer 4-1 and a drive gear 4-2 driven by the motor reducer 4-1. The cooling and drying rotary drum 1 is provided with a ring gear 4-3 that cooperates with the drive gear 4-2. When the motor reducer 4-1 is started, it drives the cooling and drying rotary drum 1 to rotate through the ring gear 4-3 and the drive gear 4-2. The rotary drive device 4 is provided with roller support devices 8 on both sides. The top of the roller support device 8 is provided with a roller that contacts the cooling and drying rotary drum 1. The roller also rotates during the rotation of the cooling and drying rotary drum 1. The roller support device 8 supports the cooling and drying rotary drum 1.

[0018] The cooling and drying rotary drum 1 includes a drying section 1-1 and a cooling section 1-2. The drying section 1-1 is equipped with a hot air drying device, which includes an inner material transfer pipe 9. A lifting plate 7 at a specific angle is also installed on the inner wall of the inner material transfer pipe 9. As the cooling and drying rotary drum 1 rotates, the lifting plate 7 pushes the material inside the drum 1 forward and throws it upward, causing the material to flow from the drying section 1-1 to the cooling section 1-2. The inner material transfer pipe 9 is located at the end of the feeding fixing device 2 and is connected to the air inlet pipe 10 and the feeding screw 5, respectively. The inlet pipe 10 is connected to the external hot air supply device. The material in the feed screw 5 enters the inner conveyor pipe 9 for drying and is conveyed to the cooling section 1-2. A hot air channel 11 is formed between the inner conveyor pipe 9 and the cooling and drying rotary drum 1. The opening of the hot air channel 11 is set at the junction of the drying section 1-1 and the cooling section 1-2. An exhaust pipe 12 is set at the end of the hot air channel 11 located at the feed fixing device 2. The hot air entering the inner conveyor pipe 9 through the inlet pipe 10 carries away the moisture of the fertilizer particles for drying. The hot air carrying water vapor is discharged from the hot air channel 11 and the exhaust pipe 12.

[0019] A blower 13 is installed in the exhaust pipe 12, which can guide the hot air in the inner material transfer pipe 9 to be discharged through the hot air channel 11 and the exhaust pipe 12.

[0020] Cooling tube bundle 14 is installed in cooling section 1-2. Cold air circulation pipe 15 is installed in cooling tube bundle 14. Cold air circulation pipe 15 is connected to the cold air generator outside the air inlet pipe 10. The cold air generator provides a cold source for cooling tube bundle 14. Fertilizer particles entering cooling section 1-2 come into contact with cooling tube bundle 14 for cooling.

[0021] A vent 16 can be provided on the discharge fixing device 3. A valve 17 is provided at the vent 16. The ambient temperature air outside can enter the cooling section 1-2 through the valve 17 and be discharged through the hot air channel 11 and the exhaust pipe 12 to adjust the pressure in the cooling section 1-2 and reduce the resistance of discharge.

Claims

1. A cooling and drying device for fertilizer production, characterized in that, The device includes a cooling and drying rotary drum, with its two ends rotatably mounted to a feeding fixing device and a discharging fixing device, respectively. The cooling and drying rotary drum includes a drying section and a cooling section. The drying section is equipped with a hot air drying device, which includes an inner material transfer pipe located at the end of the feeding fixing device and connected to an air inlet pipe and a feeding screw. The air inlet pipe is connected to an external hot air supply device. A hot air channel is formed between the inner material transfer pipe and the cooling and drying rotary drum. The opening of the hot air channel is located at the junction of the drying section and the cooling section. An exhaust pipe is installed at the end of the hot air channel located at the feeding fixing device. A cooling tube bundle is installed in the cooling section, and a cold air circulation pipe is installed inside the cooling tube bundle. The cold air circulation pipe is connected to an external cold air generator.

2. The cooling and drying device for fertilizer production according to claim 1, characterized in that, An air pump is installed in the exhaust duct.

3. The cooling and drying device for fertilizer production according to claim 1, characterized in that, A vent can be installed on the material discharge fixing device, and a valve can be installed at the vent.

4. The cooling and drying device for fertilizer production according to claim 1, characterized in that, The inner wall of the cooling and drying rotary drum is equipped with lifting plates at a specific angle, and the inner wall of the inner conveying pipe is also equipped with lifting plates at a specific angle.

5. The cooling and drying device for fertilizer production according to claim 1, characterized in that, The end of the feeding fixing device is provided with a feeding screw, and the bottom of the discharging fixing device is provided with a discharge port.

6. The cooling and drying device for fertilizer production according to claim 1, characterized in that, The rotary drive device includes a motor reducer and a drive gear driven by the motor. The cooling and drying rotary drum is provided with a ring gear that cooperates with the drive gear.

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