Organic fertilizer drying and dehumidifying equipment

Abstract

The utility model belongs to the technical field of organic fertilizer, especially an organic fertilizer drying and dehumidifying equipment, including trolley and the frame through bolt fixation on trolley, the inside of frame is provided with tumbling mechanism, tumbling mechanism includes rotary drum, the inside fertilizer is driven tumbling through rotation of rotary drum, through setting drying mechanism, the air that enters the inside of frame is filtered, fan suction air, filter layer purifies the air that enters, prevents dust or impurity and pollutes fertilizer, electric heating wire is located the right side of filter layer, first filters and then heats, avoids the safety hidden danger that impurity adheres electric heating wire and arouses, the half ring structure that guide vane is, its embrace the outside of rotary drum, a plurality of guide holes are set up in the lower surface of guide vane, the concentrated airflow that fan delivery is converted into the uniform airflow that covers the whole rotary drum section.

Description

Technical Field

[0001] This utility model relates to the field of organic fertilizer technology, and in particular to an organic fertilizer drying and dehumidification device. Background Technology

[0002] Organic fertilizers refer to fertilizers whose main component is organic matter, including human excrement, manure, compost, green manure, oilseed cake, biogas fertilizer, etc. They are characterized by their variety, wide availability, and long-lasting effects. These fertilizers not only provide crops with a variety of nutrients, but also improve soil structure and increase soil organic matter, playing an important role in agricultural production and the ecological environment. During the production and storage of organic fertilizers, high moisture content can lead to clumping, mold, or even deterioration. Drying and dehumidifying can reduce the moisture content of fertilizers to a safe standard, ensuring that fertilizer particles are loose, easy to store, and easy to transport.

[0003] In the existing technology, organic fertilizers are dried and dehumidified by stirring and blowing hot air. However, stirring dryers have high requirements for the form of fertilizers and are not suitable for some granular or fibrous fertilizers. In addition, hot air can carry external dust, impurities and other pollutants, which adhere to the surface of the fertilizer and affect the quality of the fertilizer. Therefore, an organic fertilizer drying and dehumidification device is proposed to solve the above-mentioned problems. Utility Model Content

[0004] In order to address the technical problems in the existing technology, such as the high requirements for fertilizer form of the stirred dryer, which is not suitable for certain granular or fibrous fertilizers, and the fact that hot air can carry external dust, impurities and other pollutants that adhere to the fertilizer surface and affect the quality of the fertilizer, this application provides an organic fertilizer drying and dehumidification device.

[0005] This utility model proposes an organic fertilizer drying and dehumidification device, which includes a handcart and a frame fixed to the handcart by bolts. The frame is provided with a tumbling mechanism, which includes a rotating drum. The rotating drum drives the fertilizer inside to tumble by rotating.

[0006] The frame is equipped with a drying mechanism, which includes a filter layer that filters the air entering the frame through its porous structure.

[0007] Preferably, the tumbling mechanism further includes a motor, which is fixedly mounted on the rear end surface of the frame, and the output shaft of the motor is rotatably connected to the rear end groove of the frame via a bearing.

[0008] The above technical solution involves fixing the motor to the frame, with the motor's output shaft rotatably connected to the frame via bearings to ensure the stability of the motor's output shaft rotation. The motor can be a servo motor, and it is equipped with a frequency converter, servo driver, and encoder to achieve precise control and adapt to different fertilizer drying needs.

[0009] Preferably, the output shaft of the motor is fixedly installed at one end of the rotating drum, and the rotating drum is rotatably connected to the front end groove of the frame through a bearing.

[0010] The above technical solution uses a motor fixedly installed on the rotating drum to drive its rotation. The rotating drum is connected to the frame via bearings to ensure its rotational stability. The front end of the rotating drum is the feed inlet, and the pump's feed end can be fixedly connected to the tank containing fertilizer via a pipe. The pump's discharge end pipe is fixedly connected to the feed inlet via a rotary joint to transport fertilizer. The rotating drum causes the fertilizer to tumble, increasing the contact area between the material and the hot air, thus accelerating drying. It is more adaptable to various forms of fertilizer, such as powder and granules. Both the frame and the rotating drum can be made of stainless steel, which is corrosion-resistant, easy to clean, and suitable for the high-humidity environment of fertilizer production.

[0011] Preferably, the curved surface of the rotating drum is provided with ventilation holes with sintered mesh, and the curved surface of the rotating drum is fixedly connected to a discharge pipe with an electric valve.

[0012] The above technical solution utilizes ventilation holes with sintered mesh on the rotating drum, allowing hot air to penetrate and directly contact the fertilizer. The sintered mesh prevents fertilizer particles from clogging the ventilation holes, ensuring uniform airflow. Simultaneously, the sintered mesh prevents fertilizer from flowing out of the ventilation holes. The pore size can be set according to specific conditions, and the material can be stainless steel to enhance corrosion resistance and service life. The rotating drum is fixedly connected to a discharge pipe with an electric valve to control the timing of fertilizer discharge. The discharge pipe is also made of stainless steel, with a discharge port on the lower surface of the frame. The motor controls the rotation of the rotating drum until the discharge pipe opening faces downwards, opening the valve. The dried fertilizer flows out through the discharge pipe from the discharge port. The electric valve can be a pneumatic V-type ball valve, which controls the air source switch via a solenoid valve, offering fast response and good sealing. A temperature sensor is installed inside the rotating drum; its specific location can be selected according to actual conditions to monitor temperature changes during the fertilizer drying process in real time, ensuring drying effectiveness.

[0013] Preferably, the drying mechanism further includes a fan, which is fixedly installed on the upper surface of the box cover of the frame, and the air inlet end of the fan is fixedly connected to an air inlet pipe, and the filter layer is fixedly adhered to the inner wall of the air inlet pipe.

[0014] The above technical solution involves fixing the fan to the frame, connecting the fan's inlet to the inlet duct, drawing in air, and then purifying the incoming air by bonding the filter layer to the inlet duct, preventing dust or impurities from contaminating the fertilizer. The filter layer can be made of HEPA filter mesh, and the fan can be a centrifugal fan with high air pressure, suitable for forced delivery of hot air. It ensures filtration effect while having good air permeability, and the HEPA filter mesh has strong corrosion resistance and durability, making it suitable for long-term use.

[0015] Preferably, an electric heating wire is fixedly installed on the inner wall of the air inlet duct, and the electric heating wire is located on the right side of the filter layer.

[0016] The above technical solution involves fixing the air inlet duct to the heating wire, heating the air to a suitable temperature to prevent high temperatures from damaging fertilizer nutrients. A temperature sensor is also installed inside the air inlet duct, the specific location of which can be selected according to the actual situation, such as between the filter layer and the heating wire or downstream of the heating wire, to monitor the air temperature in real time, ensuring that the heating temperature is suitable and preventing high temperatures from damaging fertilizer nutrients. The air inlet duct can also be made of stainless steel. The heating wire is located on the right side of the filter layer, filtering before heating to prevent impurities from adhering to the heating wire and causing safety hazards. The heating wire can be a stainless steel armored heating wire, which is resistant to high temperatures, corrosion, and has a long service life.

[0017] Preferably, the inner wall of the frame is fixedly installed with a guide plate having guide holes by bolts, and the air outlet of the fan is fixedly connected to the upper surface of the guide plate through a pipe.

[0018] Through the above technical solution, the frame is fixedly installed to the guide plate with bolts, which facilitates disassembly while fixing it. The air outlet of the fan is fixedly connected to the guide plate through a pipe, and hot air is delivered to the guide plate. The guide plate has a semi-circular structure, which surrounds the outside of the rotating drum. Multiple guide holes are opened on the lower surface of the guide plate, which transforms the concentrated airflow delivered by the fan into a uniform airflow covering the entire cross-section of the rotating drum. This avoids the problem of local over-drying or under-drying caused by concentrated airflow, and significantly improves the uniformity of drying quality.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. By setting up a tumbling mechanism, the fertilizer inside is tumbled. The motor drives the drum to rotate, and the rotation of the drum causes the fertilizer to tumble, increasing the contact area between the material and the hot air. The drum has ventilation holes with sintered mesh, allowing the hot air to penetrate the drum and directly contact the fertilizer. The sintered mesh prevents fertilizer particles from clogging the ventilation holes, ensuring uniform airflow. At the same time, the sintered mesh prevents fertilizer from flowing out of the ventilation holes. The motor controls the drum to rotate until the outlet of the discharge pipe faces downward, opening the valve. The dried fertilizer flows out of the outlet through the discharge pipe. This solves the technical problem in the existing technology of drying and dehumidifying organic fertilizer by stirring and blowing hot air, but the stirring dryer has high requirements for the form of fertilizer and is not suitable for some granular or fibrous fertilizers.

[0021] 2. By setting up a drying mechanism, the air entering the frame is filtered. The fan draws in the air, and the filter layer purifies the incoming air, preventing dust or impurities from contaminating the fertilizer. The heating wire is located on the right side of the filter layer, filtering before heating to avoid impurities adhering to the heating wire and causing safety hazards. The guide plate has a semi-circular structure, which surrounds the outside of the rotating drum. Multiple guide holes are opened on the lower surface of the guide plate to transform the concentrated airflow delivered by the fan into a uniform airflow covering the entire cross-section of the rotating drum. This avoids the problem of local over-drying or under-drying caused by concentrated airflow, significantly improving the uniformity of drying quality. It solves the technical problem in the prior art that hot air carries external dust, impurities and other pollutants, which adhere to the fertilizer surface and affect fertilizer quality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of an organic fertilizer drying and dehumidification device proposed in this utility model;

[0023] Figure 2 This is a perspective view of the fan structure of an organic fertilizer drying and dehumidification device proposed in this utility model;

[0024] Figure 3 This is a perspective view of the motor structure of an organic fertilizer drying and dehumidification device proposed in this utility model;

[0025] Figure 4 This is a perspective view of the guide plate structure of an organic fertilizer drying and dehumidification device proposed in this utility model;

[0026] Figure 5 This is a perspective view of the ventilation hole structure of an organic fertilizer drying and dehumidification device proposed in this utility model;

[0027] Figure 6 This is a perspective view of the discharge pipe structure of an organic fertilizer drying and dehumidification device proposed in this utility model;

[0028] Figure 7This is a perspective view of the heating wire structure of an organic fertilizer drying and dehumidification device proposed in this utility model.

[0029] In the diagram: 1. Handcart; 11. Frame; 2. Motor; 3. Rotary drum; 4. Ventilation hole; 41. Discharge pipe; 5. Fan; 51. Air inlet pipe; 52. Filter layer; 6. Heating wire; 7. Guide plate. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] Reference Figures 1-7 An organic fertilizer drying and dehumidification device includes a handcart 1 and a frame 11 fixed to the handcart 1 by bolts. The frame 11 is equipped with a tumbling mechanism, which includes a rotating drum 3. The rotating drum 3 drives the fertilizer inside to tumble by rotating.

[0032] To ensure the stability of the rotation of the output shaft of motor 2, the tumbling mechanism also includes motor 2. Motor 2 is fixedly installed on the rear end surface of frame 11. The output shaft of motor 2 is rotatably connected to the rear end groove of frame 11 through bearings. By fixing motor 2 to frame 11, the output shaft of motor 2 is rotatably connected to frame 11 through bearings to ensure the stability of the rotation of the output shaft of motor 2. The model of motor 2 can be servo motor 2, and it is equipped with frequency converter, servo driver and encoder to achieve precise control and adapt to different fertilizer drying needs.

[0033] To drive the rotating drum 3 to rotate, the output shaft of the motor 2 is fixedly installed at one end of the rotating drum 3. The rotating drum 3 is rotatably connected to the front groove of the frame 11 through a bearing. The rotating drum 3 is driven to rotate by the fixed installation of the motor 2 and the rotating drum 3. The rotating drum 3 is rotatably connected to the frame 11 through the bearing to ensure the stability of the rotation of the rotating drum 3. The front end of the rotating drum 3 is the feed inlet. The operator can fix the feed end of the pump to the tank containing fertilizer through a pipe. The pipe of the discharge end of the pump is fixedly connected to the feed inlet through a rotary joint to transport fertilizer. The rotating drum 3 drives the fertilizer to tumble by rotating, increasing the contact area between the material and the hot air and accelerating drying. It is more adaptable to fertilizers in various forms such as powder and granules. The frame 11 and the rotating drum 3 can be made of stainless steel, which is corrosion-resistant, easy to clean, and suitable for the high humidity environment of fertilizer production.

[0034] To monitor temperature changes during fertilizer drying in real time, the curved surface of the rotating drum 3 is provided with ventilation holes 4 equipped with sintered mesh. A discharge pipe 41 with an electric valve is fixedly connected to the curved surface of the rotating drum 3. Through the ventilation holes 4 with sintered mesh, hot air is allowed to penetrate the rotating drum 3 and directly contact the fertilizer. The sintered mesh prevents fertilizer particles from clogging the ventilation holes 4, ensuring uniform airflow. Simultaneously, the sintered mesh prevents fertilizer from flowing out of the ventilation holes 4. The diameter of the sintered mesh can be set according to specific conditions, and its material can be stainless steel to enhance corrosion resistance and service life. The rotating drum 3 is connected to the discharge pipe 41 with an electric valve. The discharge pipe 41 of the valve is fixedly connected to control the timing of fertilizer discharge. The discharge pipe 41 is also made of stainless steel. The lower surface of the frame 11 has a discharge port. The motor 2 controls the rotating drum 3 to rotate until the opening of the discharge pipe 41 is facing downwards, opening the valve. The dried fertilizer flows out from the discharge port through the discharge pipe 41. The electric valve can be a pneumatic V-type ball valve, which controls the air source switch through a solenoid valve. It has a fast response speed and good sealing performance. A temperature sensor is installed inside the rotating drum 3. The specific position can be selected according to the actual situation to monitor the temperature change during the fertilizer drying process in real time and ensure the drying effect.

[0035] By setting up a tumbling mechanism, the fertilizer inside is tumbled. Motor 2 drives the rotating drum 3 to rotate, and the rotating drum 3 tumbles the fertilizer, increasing the contact area between the material and the hot air. The rotating drum 3 has ventilation holes 4 with sintered mesh, allowing hot air to penetrate the rotating drum 3 and directly contact the fertilizer. The sintered mesh prevents fertilizer particles from clogging the ventilation holes 4, ensuring uniform airflow. At the same time, the sintered mesh prevents fertilizer from flowing out of the ventilation holes 4. Motor 2 controls the rotating drum 3 to rotate until the outlet of the discharge pipe 41 faces downward, opening the valve. The dried fertilizer flows out of the outlet through the discharge pipe 41. This solves the technical problem in the existing technology of drying and dehumidifying organic fertilizer by stirring and blowing hot air, but the stirring dryer has high requirements for the form of fertilizer and is not suitable for some granular or fibrous fertilizers.

[0036] In order to filter the air entering the frame 11, a drying mechanism is provided inside the frame 11. The drying mechanism includes a filter layer 52, which filters the air entering the frame 11 through its porous structure.

[0037] To prevent dust or impurities from contaminating the fertilizer, the drying mechanism also includes a fan 5. The fan 5 is fixedly installed on the upper surface of the cover of the frame 11. The air inlet end of the fan 5 is fixedly connected to the air inlet pipe 51. The filter layer 52 is fixedly bonded to the inner wall of the air inlet pipe 51. The fan 5 is fixedly installed and fixed to the frame 11. The fan 5 draws in air through the fixed connection between the air inlet end and the air inlet pipe 51. The filter layer 52 is fixedly bonded to the air inlet pipe 51 to purify the incoming air and prevent dust or impurities from contaminating the fertilizer. The filter layer 52 can be made of HEPA filter. The fan 5 can be a centrifugal fan 5, which has high air pressure and is suitable for forced delivery of hot air. It ensures the filtration effect while having good air permeability. The HEPA filter has strong corrosion resistance and durability and is suitable for long-term use.

[0038] To prevent impurities from adhering to the heating wire 6 and causing safety hazards, a heating wire 6 is fixedly installed on the inner wall of the air inlet duct 51. The heating wire 6 is located on the right side of the filter layer 52 and is fixedly installed through the air inlet duct 51 to heat the air to a suitable temperature, preventing high temperature from damaging fertilizer nutrients. A temperature sensor is also installed inside the air inlet duct 51. The specific location can be selected according to the actual situation, such as being installed between the filter layer 52 and the heating wire 6 or downstream of the heating wire 6, to monitor the air temperature in real time and ensure that the heating temperature is suitable, preventing high temperature from damaging fertilizer nutrients. The air inlet duct 51 can also be made of stainless steel. With the heating wire 6 located on the right side of the filter layer 52, the air is filtered before heating, preventing impurities from adhering to the heating wire 6 and causing safety hazards. The heating wire 6 can be a stainless steel armored heating wire, which is resistant to high temperature, corrosion, and has a long service life.

[0039] To deliver hot air to the guide plate 7, the inner wall of the frame 11 is bolted with a guide plate 7 having guide holes. The air outlet of the fan 5 is fixedly connected to the upper surface of the guide plate 7 through a pipe. The frame 11 is fixedly installed to the guide plate 7 with bolts, which facilitates disassembly while fixing it. The air outlet of the fan 5 is fixedly connected to the guide plate 7 through a pipe, delivering hot air to the guide plate 7. The guide plate 7 has a semi-annular structure, which surrounds the outside of the rotating drum 3. The lower surface of the guide plate 7 has multiple guide holes, which transform the concentrated airflow delivered by the fan 5 into a uniform airflow covering the entire cross-section of the rotating drum 3, avoiding the problem of local over-drying or under-drying caused by concentrated airflow, and significantly improving the uniformity of drying quality.

[0040] By setting up a drying mechanism, the air entering the frame 11 is filtered. The fan 5 draws in the air, and the filter layer 52 purifies the incoming air, preventing dust or impurities from contaminating the fertilizer. The heating wire 6 is located on the right side of the filter layer 52. It filters before heating, avoiding impurities adhering to the heating wire 6 and causing safety hazards. The guide plate 7 has a semi-circular structure, which surrounds the outside of the rotating drum 3. The lower surface of the guide plate 7 has multiple guide holes, which transform the concentrated airflow delivered by the fan 5 into a uniform airflow covering the entire cross-section of the rotating drum 3. This avoids the problem of local over-drying or under-drying caused by concentrated airflow, significantly improving the uniformity of drying quality. It solves the technical problem in the prior art that hot air carries external dust, impurities and other pollutants, which adhere to the fertilizer surface and affect the fertilizer quality.

[0041] Working principle: When drying organic fertilizer, the equipment is moved to the required position by the handcart 1. First, the fan 5 and the temperature sensor in the air inlet pipe 51 are started to circulate cold air and expel any humid air and residual dust that may exist inside the frame 11. This process lasts for about 1-2 minutes. The feed end of the pump is fixedly connected to the tank containing fertilizer through a pipe. The discharge end of the pump is fixedly connected to the feed port of the rotating drum 3 through a rotary joint.

[0042] The PLC precisely controls the power of the heating wire 6 through a solid-state relay based on the target temperature set by the HMI to heat the air in the air inlet duct 51. The temperature sensor in the air inlet duct 51 forms a closed-loop feedback. When the temperature reaches the set value, the SSR reduces the power to perform constant temperature control. After the hot air temperature stabilizes, the system starts the motor 2, and the rotating drum 3 starts to rotate at a preset low speed. At the same time, the operator starts the pump to pump the fertilizer to be dried into the feed port of the rotating drum 3.

[0043] External air is drawn into the air inlet duct 51 by the fan 5. The air first passes through the filter layer 52 on the inner wall of the air inlet duct 51 to remove dust, impurities and other pollutants, ensuring that the hot air entering the frame 11 is clean and preventing secondary pollution of the fertilizer. The clean air then flows through the heating wire 6 located behind the filter layer 52 and is heated to the preset temperature suitable for drying the fertilizer. The heated hot air is then transported by the fan 5 through the pipe to the guide plate 7. The guide holes on the guide plate 7 disperse and guide the concentrated airflow, forming a layer of "hot air curtain" or "rain" airflow that evenly covers the entire cross section of the rotating drum 3. The hot air penetrates the ventilation holes 4 with sintered mesh on the wall of the rotating drum 3 and comes into full contact with the fertilizer particles that are constantly tumbling inside the rotating drum 3, taking away the moisture. The rotation of the rotating drum 3 causes the fertilizer inside to be continuously and gently tumbled and scattered, constantly breaking the moisture saturation layer on the surface of the fertilizer, making it easier for the internal moisture to escape and come into contact with fresh hot air, greatly improving the drying efficiency.

[0044] During the drying process, the temperature sensor inside the rotating drum 3 monitors the fertilizer temperature in real time and feeds the data back to the control system. When the system determines that the fertilizer has reached the preset drying standard, the control system instructs the motor 2 to drive the rotating drum 3 to rotate until the outlet of the discharge pipe 41 rotates to the bottom. The control system then sends a signal to the solenoid valve, which opens the air source and drives the pneumatic V-ball valve to open. Under the action of gravity, the dried fertilizer falls precisely into the outlet below the frame 11 through the discharge pipe 41, completing the entire drying process.

[0045] After the material is discharged, the system automatically enters the post-processing program. To prevent residual heat from damaging the fertilizer or equipment, the system will continue to run the fan 5 and the drum 3 for several minutes to cool the material with cold air. All components will then be safely shut down in sequence and return to standby mode.

[0046] Regularly inject No. 2 lithium-based grease into the output shaft bearing of motor 2 and the bearings at both ends of drum 3 every 200 hours of operation. Clean the filter screen monthly, and replace it if the pressure difference is too large. Regularly check the surface of heating wire 6 for oxidation or dust accumulation, and clean it with compressed air. Regularly clean the sintering mesh to prevent clogging. Regularly test the electronic equipment, and repair or replace it in time if there is any fault.

[0047] 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 the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An organic fertilizer drying and dehumidification device, comprising a handcart (1) and a frame (11) bolted to the handcart (1), characterized in that: The frame (11) is provided with a tumbling mechanism, which includes a rotating drum (3). The rotating drum (3) drives the fertilizer inside to tumble by rotating. The frame (11) is provided with a drying mechanism inside, which includes a filter layer (52) that filters the air entering the frame (11) through its porous structure.

2. The organic fertilizer drying and dehumidification equipment according to claim 1, characterized in that: The tumbling mechanism also includes a motor (2), which is fixedly installed on the rear end surface of the frame (11), and the output shaft of the motor (2) is rotatably connected to the rear end groove of the frame (11) through a bearing.

3. The organic fertilizer drying and dehumidification equipment according to claim 2, characterized in that: The output shaft of the motor (2) is fixedly installed at one end of the rotating drum (3), and the rotating drum (3) is rotatably connected to the front end groove of the frame (11) through a bearing.

4. The organic fertilizer drying and dehumidification equipment according to claim 3, characterized in that: The curved surface of the rotating drum (3) is provided with ventilation holes (4) with sintered mesh, and the curved surface of the rotating drum (3) is fixedly connected to a discharge pipe (41) with an electric valve.

5. The organic fertilizer drying and dehumidification equipment according to claim 1, characterized in that: The drying mechanism also includes a fan (5), which is fixedly installed on the upper surface of the box cover of the frame (11). The air inlet end of the fan (5) is fixedly connected to an air inlet pipe (51), and the filter layer (52) is fixedly bonded to the inner wall of the air inlet pipe (51).

6. The organic fertilizer drying and dehumidification equipment according to claim 5, characterized in that: A heating wire (6) is fixedly installed on the inner wall of the air inlet pipe (51), and the heating wire (6) is located on the right side of the filter layer (52).

7. The organic fertilizer drying and dehumidification equipment according to claim 5, characterized in that: The inner wall of the frame (11) is fixedly installed with a guide plate (7) having a guide hole by bolts, and the air outlet of the fan (5) is fixedly connected to the upper surface of the guide plate (7) through a pipe.

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