A pesticide insecticide drying machine

Abstract

The utility model provides a kind of pesticide insecticide drying machine, belong to drying device technical field.It includes: several staggered distribution's spiral dryer, spiral dryer includes shell, and the spiral auger of rotation connection with shell inner wall;Wet back powder assembly, including with shell intercommunication's moisture discharge pipe group, the shell top of uppermost spiral dryer is equipped with back powder mouth, back powder mouth top is equipped with with the back powder hopper of moisture discharge pipe group intercommunication, back powder hopper inner side wall upper portion between is equipped with filter screen.The utility model several spiral dryer material can realize multistage continuous drying, ensure that material is more completely, more evenly dry, while the unique wet back powder assembly, through filter screen can effectively capture with hot air escaping fine pesticide powder, cooperate vibration hammer and flap valve, can periodically, quantitatively return to drying system with recycled powder, to avoid causing serious environmental dust pollution, significantly reduce material loss, improve product yield.

Description

Technical Field

[0001] This utility model provides a pesticide and insecticide dryer, belonging to the technical field of drying equipment. Background Technology

[0002] In the synthesis of pesticides and insecticides, the final product is usually a wet filter cake or crystals containing organic solvents. Pesticides and insecticides are indispensable materials in agricultural production. Drying is a crucial step in the production of their technical grade or formulations, determining product quality, stability, and shelf life. To obtain dry powder products that meet quality standards, drying processes using a dryer are essential.

[0003] Existing pesticide and insecticide dryers can basically meet normal usage needs, but they still have certain drawbacks: during the drying process, especially when processing powdery or fine granular pesticides, the airflow during dehumidification often carries away some fine powder. If this powder is directly discharged into the external environment, it will not only cause serious environmental dust pollution, but also lead to material loss and reduced product yield. Based on this, this utility model provides a pesticide and insecticide dryer. Utility Model Content

[0004] The technical problem solved by this utility model is that some of the material powder carried away during dehumidification is directly discharged into the external environment, causing serious environmental dust pollution, and also leading to material loss and reduced product yield.

[0005] To solve the technical problem, the technical solution provided by this utility model is: a pesticide insecticide dryer, comprising:

[0006] A plurality of staggered spiral dryers, each spiral dryer comprising a shell and a spiral auger rotatably connected to the inner wall of the shell;

[0007] A dehumidification and powder return assembly connected to several spiral dryers includes a moisture discharge pipe assembly connected to the outer shell. The top of the outer shell of the uppermost spiral dryer is provided with a powder return port. The top of the powder return port is provided with a powder return hopper connected to the moisture discharge pipe assembly. A filter screen is provided between the upper part of the inner side wall of the powder return hopper and placed above the moisture discharge pipe assembly.

[0008] Furthermore, a baffle valve is provided at the bottom opening of the powder return hopper, and a vibrating hammer is provided on the body of the powder return hopper.

[0009] Furthermore, the moisture discharge pipe assembly includes a collecting pipe connected to the powder return hopper, the collecting pipe being provided with a dehumidification pipe connected to the side wall of the outer casing, and the dehumidification pipe being provided with a valve.

[0010] Furthermore, the spiral dryer also includes a motor fixedly mounted on the outer wall of the outer shell for driving the spiral auger to rotate, a feed inlet is provided on one side of the top of the outer shell, and a discharge outlet is provided on the other side of the bottom of the outer shell.

[0011] Furthermore, the feed inlet of the lower spiral dryer is connected to the discharge outlet of the upper spiral dryer, and a feed hopper is provided at the top of the feed inlet of the uppermost spiral dryer, with a switch valve provided at the bottom opening of the feed hopper.

[0012] Furthermore, the outer casing includes a housing and a heating jacket disposed within the housing. A heating pipe assembly for supplying heat gas to the heating jacket is provided on one side of the housing, and the heating pipe assembly is connected to an external heating device.

[0013] The beneficial effects of this utility model are:

[0014] Several spiral dryers, combined with a dehumidification and powder return assembly, enable multi-stage continuous drying of materials, ensuring more thorough and uniform drying. The unique dehumidification and powder return assembly effectively captures fine pesticide powders that escape with the hot and humid airflow through a filter screen. Combined with a vibrating hammer and a gate valve, the recovered powder can be periodically and quantitatively returned to the drying system to avoid serious environmental dust pollution, significantly reduce material loss, and improve product yield. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a pesticide and insecticide dryer according to the present invention. Figure 1 .

[0016] Figure 2 This is a schematic diagram of the structure of a pesticide and insecticide dryer according to the present invention. Figure 2 .

[0017] Figure 3 This is a schematic diagram of the structure of a pesticide and insecticide dryer according to the present invention. Figure 3 .

[0018] Figure 4 This is a plan view of a pesticide and insecticide dryer according to the present invention.

[0019] 1. Spiral dryer; 2. Outer shell; 3. Spiral auger; 4. Shell; 5. Heating jacket; 6. Heating pipe assembly; 7. Dehumidification and powder return assembly; 8. Moisture discharge pipe assembly; 9. Powder return port; 10. Powder return hopper; 11. Filter screen; 12. Slide valve; 13. Vibrating hammer; 14. Collection pipe; 15. Dehumidification pipe; 16. Motor; 17. Feed hopper. Detailed Implementation

[0020] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly mentioned in this specification are defined relative to their structure and are relative concepts. Therefore, they may vary depending on their location and usage; thus, these or other directional terms should not be interpreted as restrictive terms.

[0021] The singular forms “a,” “the,” and “the” used in this specification are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes one or more of the associated listed items, any or all possible combinations thereof.

[0022] To make the technical problems to be solved, the technical solutions, and the beneficial effects of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0023] According to the appendix Figure 1 , 3 As shown in Figure 4: This utility model provides a pesticide insecticide dryer, comprising: several staggered spiral dryers 1, each spiral dryer 1 including a shell 2 and a spiral auger 3 rotatably connected to the inner wall of the shell 2; the spiral dryer 1 also includes a motor 16 fixedly mounted on the outer wall of the shell 2 for driving the spiral auger 3 to rotate, the motor 16 being a variable frequency speed control motor, the speed of the spiral auger 3 being adjusted by a controller, thereby controlling the conveying speed and residence time of the material in the spiral dryer 1; a feed inlet is provided on one side of the top of the shell 2, and a discharge outlet is provided on the other side of the bottom of the shell 2; the shell 2 includes a housing 4 and a heating jacket 5 disposed within the housing 4; a heating pipe assembly 6 is provided on one side of the shell 2 for supplying heat to the heating jacket 5, connected to external heating equipment such as a steam boiler or hot air furnace, to introduce high-temperature heat medium into the heating jacket. In set 5, the heating temperature can be set according to the characteristics of different pesticides, usually between 80℃ and 200℃. The inlet of the lower spiral dryer 1 is connected to the outlet of the upper spiral dryer 1. The top of the inlet of the uppermost spiral dryer 1 is equipped with a feed hopper 17, and the bottom opening of the feed hopper 17 is equipped with a switch valve. Specifically, indirect heating is carried out using heating jacket 5, and the heat transfer is uniform. This can effectively avoid local overheating, charring, or decomposition of active ingredients caused by direct contact between the material and the high-temperature heat source. It is especially suitable for drying heat-sensitive pesticides. By starting the motor 16, the spiral auger 3 is driven to rotate. Through several staggered spiral dryers 1, the material can flow through each drying unit in sequence by gravity, which extends the drying path and time, realizes multi-stage continuous drying, and ensures that the material is dried more thoroughly and uniformly.

[0024] As per the instruction manual Figure 1 , 2 As shown in Figure 4: The dehumidification and powder return assembly 7, which is connected to several spiral dryers 1, includes a moisture discharge pipe assembly 8 connected to the outer shell 2, so that the moisture generated by each spiral dryer 1 can be collected and processed uniformly. The top of the outer shell 2 of the uppermost spiral dryer 1 is provided with a powder return port 9. The top of the powder return port 9 is provided with a powder return hopper 10 connected to the moisture discharge pipe assembly 8. A filter screen 11 is provided between the upper part of the inner side wall of the powder return hopper 10 and placed above the moisture discharge pipe assembly 8. A baffle valve 12 is provided on the bottom opening of the powder return hopper 10. The baffle valve 12 is used to control the timing of the return of the recovered powder. A vibrating hammer 13 is provided on the body of the powder return hopper 10. The vibrating hammer 13 shakes off the powder adhering to the filter screen 11 through periodic vibration, preventing blockage and ensuring dehumidification and powder return efficiency. The moisture discharge pipe assembly 8 includes a collecting pipe 14 connected to the powder return hopper 10. The collecting pipe 14 is provided with a dehumidification pipe 15 connected to the side wall of the outer shell 2. The dehumidification pipe 15 is provided with a valve. Specifically, when the valve is opened, the moisture inside the outer shell 2 is transported to the collecting pipe 14 through the dehumidification pipe 15, and then to the powder return hopper 10. After being filtered by the filter screen 11, the dust is retained at the bottom of the filter screen 11, and the moisture with the dust removed is discharged from the powder return hopper 10 into the external environment through the filter screen 11.

[0025] The entire process of this utility model is automatically controlled by a control system composed of a PLC (Programmable Logic Controller) and an HMI (Human Machine Interface). The system can accurately set and regulate the heating temperature, motor speed, start-stop sequence and frequency of the vibrating hammer and slide gate valve, so as to achieve intelligent, continuous and stable production. The figures are not shown and will not be described in detail here. The control circuit can be implemented by those skilled in the art through simple programming. The power supply is also common knowledge in the field. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail here.

[0026] The principle and working process of this utility model

[0027] Preparation stage: Start the heating equipment and supply heat medium to the heating jacket 5 of each spiral dryer 1 through the heating pipe group 6 to preheat the equipment. At the same time, start all motors 16 to make the spiral auger 3 start to rotate.

[0028] Feeding and Drying: Open the switch valve at the bottom of the feed hopper 17 and add the wet pesticide material containing a certain amount of moisture into the uppermost spiral dryer 1. Under the push and stirring of the spiral auger 3, the material moves slowly forward while undergoing heat exchange through the shell wall, and the moisture begins to evaporate. The material falls from the discharge port of the first spiral dryer 1 into the feed port of the second spiral dryer 1, and is conveyed downwards in sequence until it is discharged from the discharge port of the lowermost spiral dryer 1. At this point, the material has met the drying requirements.

[0029] Dehumidification: During the drying process, the large amount of hot and humid air generated by the evaporation of the material will carry some fine pesticide powder. This mixture of moisture and dust is drawn out from the dehumidification pipe 15 of each spiral dryer 1, collected in the collection pipe 14, and enters the return powder hopper 10 upward. When the airflow passes through the filter screen 11, water vapor and other gases pass through the mesh and are discharged, while the pesticide powder is intercepted by the filter screen 11 and adheres to its surface.

[0030] Powder return: As time goes by, the amount of powder attached to the filter screen 11 will increase. At this time, the control system starts the vibrating hammer 13 to knock the powder return hopper 10 at high frequency, shaking the powder off the filter screen 11 and causing it to fall into the bottom cone of the powder return hopper 10 to accumulate. When the accumulated powder reaches a certain amount, the control system or operator opens the bottom slide valve 12, and the recovered powder falls back into the top spiral dryer 1 through the powder return port 9, mixes with the newly entered wet material, and enters the drying cycle again.

[0031] Several spiral dryers, combined with a dehumidification and powder return assembly, enable multi-stage continuous drying of materials, extending the drying path and time to ensure more thorough and uniform drying. Meanwhile, the unique dehumidification and powder return assembly 7, through the filter screen 11, can effectively capture fine pesticide powders that escape with the hot and humid airflow. In conjunction with the vibrating hammer 13 and the slide valve 12, the recovered powder can be returned to the drying system periodically and quantitatively, which not only significantly reduces material loss and improves product yield, but also greatly reduces the amount of dust emitted into the atmosphere.

[0032] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A pesticide / insecticide dryer, characterized in that: include: A number of staggered spiral dryers (1), each spiral dryer (1) includes a shell (2) and a spiral auger (3) rotatably connected to the inner wall of the shell (2); A dehumidification and powder return assembly (7) connected to several spiral dryers (1) includes a moisture discharge pipe assembly (8) connected to the outer shell (2). The top of the outer shell (2) of the uppermost spiral dryer (1) is provided with a powder return port (9). The top of the powder return port (9) is provided with a powder return hopper (10) connected to the moisture discharge pipe assembly (8). A filter screen (11) is provided between the upper part of the inner side wall of the powder return hopper (10) and placed above the moisture discharge pipe assembly (8).

2. The pesticide dryer according to claim 1, characterized in that: The bottom opening of the powder return hopper (10) is provided with a slide valve (12), and the body of the powder return hopper (10) is provided with a vibrating hammer (13).

3. The pesticide dryer according to claim 1, characterized in that: The moisture discharge pipe assembly (8) includes a collecting pipe (14) connected to the powder return hopper (10), and the collecting pipe (14) is provided with a dehumidification pipe (15) connected to the side wall of the outer shell (2), and the dehumidification pipe (15) is provided with a valve.

4. The pesticide dryer according to claim 1, characterized in that: The spiral dryer (1) also includes a motor (16) fixedly installed on the outer wall of the outer shell (2) for driving the spiral auger (3) to rotate. The top side of the outer shell (2) is provided with a feed inlet, and the bottom side of the outer shell (2) is provided with a discharge outlet.

5. A pesticide insecticide dryer according to claim 4, characterized in that: The feed inlet of the lower spiral dryer (1) is connected to the discharge outlet of the upper spiral dryer (1). The top of the feed inlet of the uppermost spiral dryer (1) is provided with a feed hopper (17), and a switch valve is provided on the bottom opening of the feed hopper (17).

6. The pesticide insecticide dryer according to claim 1, characterized in that: The outer shell (2) includes a shell (4) and a heating jacket (5) disposed inside the shell (4). A heating pipe assembly (6) for supplying heat gas to the heating jacket (5) is provided on one side of the outer shell (2). The heating pipe assembly (6) is connected to an external heating device.

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