Cleaning and drying equipment for agricultural product processing

Abstract

The invention is applicable to the technical field of agricultural product processing, and provides cleaning and drying equipment for agricultural product processing, which comprises a connecting frame, and a pretreatment mechanism is arranged on the outer side of the connecting frame; the pretreatment mechanism comprises a motor, a transmission plate, a transmission wheel, a transmission belt, a transmission rod, a fixed plate, a sleeve, a connecting piece, a fixed rod, a first magnet, a second magnet, a buffer plate, a reset spring, a closing plate and a connecting rod; according to the agricultural product screening device, primary cleaning is conducted on materials entering the feeding hopper through the adjustable screen, the agricultural product screening device can adapt to agricultural products with different particle sizes, and large-particle impurities are effectively screened out; the winnower is matched with the conveying pipeline to evenly feed the materials into the pipeline, hot air drying of the hot air blower and air suction cleaning of the impurity suction fan are combined, secondary hot air cleaning is achieved, the impurity separation efficiency is improved, the materials are dried in advance through hot air, loads are relieved for follow-up drying, impurities are prevented from being mixed, and the drying quality is prevented from being affected. And the synergistic effect of cleaning and pre-drying is obviously optimized.

Description

Technical Field

[0001] This application relates to the field of agricultural product processing technology, and more specifically, to a cleaning and drying device for agricultural product processing. Background Technology

[0002] Agricultural products often contain large particles, dust, and light impurities after harvest, requiring cleaning and drying to meet storage, processing, or sales requirements. Currently, most common cleaning equipment uses fixed-aperture screens for one-time screening, which is difficult to adapt to agricultural products with different particle sizes and has limited separation effect on light impurities, easily causing impurities to mix in during subsequent drying processes, affecting drying quality and efficiency. Although some equipment has added air separation structures, air separation and drying are mostly independent processes that need to be completed by separate equipment, which not only increases the equipment footprint but also leads to low overall processing efficiency due to poor process connection.

[0003] However, some problems still exist in the above solutions: In the drying process, existing equipment mostly uses drying drums with a single temperature zone or a fixed tilt angle, which makes it difficult to meet the drying needs of agricultural products with different humidity levels and heat sensitivity. High-temperature direct drying can easily cause the surface of heat-sensitive agricultural products to scorch or uneven distribution of internal moisture, while low-temperature drying has the problems of low efficiency and incomplete drying. At the same time, the large amount of water vapor generated during the drying process is directly discharged, which not only wastes heat energy but also increases the ambient humidity. Although some equipment is equipped with simple condensation devices, it lacks an effective water vapor recovery and heat energy circulation system, resulting in high energy consumption and difficulty in controlling operating costs. In addition, the impact of falling materials during the feeding process can easily cause damage, affecting the appearance and quality of agricultural products. Traditional feeding structures often lack buffer design, resulting in insufficient equipment operation stability. Summary of the Invention

[0004] This invention provides a cleaning and drying device for agricultural product processing, aiming to solve the problems mentioned in the background art.

[0005] The present invention is implemented as follows: a cleaning and drying device for agricultural product processing includes a connecting frame, and a pre-treatment mechanism is provided on the outside of the connecting frame. The pre-treatment mechanism includes a motor, a transmission plate, a transmission wheel, a transmission belt, a transmission rod, a fixed plate, a sleeve, a connecting piece, a fixed rod, a first magnetic attraction, a second magnetic attraction, a buffer plate, a return spring, a sealing plate, and a connecting rod. The motor is fixed to the outside of the feed hopper by a fixing rod. The output end of the motor is connected to one of the transmission wheels. There are three transmission wheels on the outside of the feed hopper. A transmission belt is sleeved between the three transmission wheels. The central shaft of one of the transmission wheels is connected to the transmission plate on the inside of the feed hopper to drive the transmission plate to rotate and move the material in the feed hopper. Two transmission rods are rotatably connected to the middle of two adjacent fixed plates on the two side walls of the feed hopper, and are respectively connected to two other transmission wheels; Both transmission rods have fixed connecting parts on their outer sides and sleeves on their inner sides. A buffer plate is vertically slidably connected to the inner side of the sleeve. A connecting rod is fixedly connected to the inner side of both transmission rods. A return spring is sleeved on the outer side of the connecting rod. One end of the return spring is fixedly connected to the inner side of the buffer plate, and the other end is fixedly connected to the sealing plate. The sealing plate is fixedly connected to the inner wall of the sleeve. One end of the connecting rod is fixedly connected to a first magnet, and the outside of the connector is fixedly connected to a second magnet. The first magnet and the second magnet are magnetically attracted to each other so as to achieve buffering through magnetic linkage when subjected to external force impact.

[0006] Preferably, the top of the feed hopper is provided with a feed inlet, and an adjustable screen is connected below the feed inlet. The adjustable screen is used to perform initial cleaning of the incoming agricultural products, removing large particles of impurities. The remaining materials continue to fall to the winnowing device through the adjustable screen.

[0007] Preferably, the winnowing device is fixedly connected to the inner side of the connecting frame, and the outer side of the winnowing device is connected to the transport pipe. The winnowing device lifts up the material after the initial cleaning and evenly feeds it into the transport pipe. Small holes are arranged around the transport pipeline. A hot air blower is connected to the bottom of the pipeline to deliver hot air into the pipeline, and a suction fan is connected to the top of the pipeline to remove light impurities. The secondary cleaning is completed while the hot air is drying.

[0008] Preferably, the material after secondary cleaning enters the first drying drum. The outside of the first drying drum is wrapped with hot water pipes at a temperature of 40 to 60 degrees Celsius. The first drying drum is equipped with an auger for conveying the material and a winnowing plate to lift the material inside the drum for uniform heating. The first drying drum is tilted at a 15-degree angle, and uniform drying is achieved by the cooperation of an auger and winnowing discs.

[0009] Preferably, the first drying cylinder is connected to the second drying cylinder via a material conveying pipe. The outer side of the second drying cylinder is wrapped with a hot water pipe with a temperature of 60 to 80 degrees Celsius. The second drying cylinder is tilted at 10 degrees to further dry the material.

[0010] Preferably, the outer side of the second drying cylinder is connected to a discharge pipe, and the dried and cleaned material is discharged through the discharge pipe.

[0011] Preferably, the water vapor generated by the first drying cylinder and the second drying cylinder is drawn in by a suction fan located below them, and sent to a distillation machine for distillation through a pipeline. The distilled water is transported to a high and low temperature heating water tank through a water vapor return pipeline, and impurities are discharged through a waste removal pipeline.

[0012] Preferably, the lower part of the high and low temperature heating water tank contains low temperature water at a temperature of 40 to 60 degrees Celsius, the upper part contains high temperature water at a temperature of 60 to 80 degrees Celsius, and a heat-insulating separation baffle is provided in the middle. Heating rods are installed at the top, bottom and middle of the high and low temperature heating water tank. A lift pump is installed on the left side of the high and low temperature heating water tank. The lift pump only allows low temperature water to flow into the high temperature water zone. An external water supply pipeline is provided for the low temperature water zone.

[0013] Preferably, the high and low temperature heating water tanks supply hot water of corresponding temperatures to the hot water pipes of the first and second drying drums through water pipes, so as to form a low temperature drying zone in the first drying drum and a high temperature drying zone in the second drying drum.

[0014] Preferably, the inner side of the sleeve of the pretreatment mechanism is fixedly connected to the two side walls of the feed hopper, and two fixed plates are fixedly connected to each side wall of the feed hopper. Two transmission rods are rotatably connected to the middle of two adjacent fixed plates and are respectively connected to the inner side of two other transmission wheels, so that the motor drives the transmission plate and the transmission wheels to drive the transmission rod and the magnetic buffer structure to work synchronously, thereby realizing the buffering of the impact of feeding and the uniform feeding of materials in the feed hopper.

[0015] Compared with related technologies, the cleaning and drying equipment for agricultural product processing provided by the present invention has the following beneficial effects: 1. In this invention, an adjustable screen is used to initially clean the material entering the hopper, which can be adapted to agricultural products with different particle sizes and effectively remove large particle impurities. The winnowing device and the conveying pipeline work together to lift the material and send it evenly into the pipeline. Combined with the hot air drying of the hot air blower and the suction cleaning of the impurity fan, a secondary hot air cleaning is achieved, which not only improves the efficiency of impurity separation, but also dries the material in advance with hot air, reducing the load for subsequent drying and avoiding the mixing of impurities that affect the drying quality. This significantly optimizes the synergistic effect of cleaning and pre-drying and improves the overall processing efficiency. The first drying cylinder uses hot water pipes at 40 to 60 degrees Celsius and a 15-degree inclined structure with an auger and winnowing discs to achieve low-temperature slow drying. The second drying cylinder uses hot water pipes at 60 to 80 degrees Celsius and a 10-degree inclined structure to further dry the material, forming a drying process with progressive temperature zones. This avoids material damage caused by direct high-temperature drying and improves the uniformity and thoroughness of drying through gradient temperature increase, ensuring that materials with different moisture content can reach the ideal degree of dryness and ensuring stable drying quality.

[0016] 2. In this invention, the lifting pump of the high and low temperature heating water tank realizes the directional flow of low temperature water to the high temperature water zone. With the precise temperature control of the upper, lower and middle heating rods, the low temperature water below and the high temperature water above are separated by the heat insulation separation baffle, which can stably provide hot water of the corresponding temperature to the first drying cylinder and the second drying cylinder. The water vapor is drawn into the distillation machine by the suction fan and then flows back into the water tank, realizing the recycling of water and heat energy, reducing the need for external heat and water replenishment, reducing energy consumption and operating costs, and improving the economy and environmental friendliness of the equipment. In the pretreatment mechanism, the motor drives the transmission plate and the transmission wheel to drive the transmission rod synchronously. The magnetic adsorption connection of the first magnetic attraction and the second magnetic attraction allows the transmission rod to slide vertically along the sleeve when it is impacted. The return spring and the closing plate provide elastic restoring force, effectively absorbing the impact of the material falling into the hopper or the external force of the equipment operation, avoiding damage to the material due to violent collision, while ensuring that the transmission plate moves the material evenly, making the feeding rhythm stable, improving the stability of the equipment operation and the consistency of material processing.

[0017] 3. In this invention, the adjustable screen, winnowing device, double drying drum, high and low temperature heating water tank and other components work together on the outside of the connecting frame to form a fully automated process from feeding to discharging. The drying and secondary cleaning design in different temperature zones not only meets the diverse cleaning and drying needs of agricultural products, but also reduces manual intervention through structural linkage, reduces operational complexity, and improves the practicality and industrial promotion value of the equipment. It is suitable for large-scale processing scenarios of various agricultural products, effectively solving the problems of incomplete cleaning, uneven drying and high energy consumption of traditional equipment, and providing an efficient, stable and energy-saving solution for agricultural product processing.

[0018] It should be understood that both the foregoing general description and the following detailed description are for illustrative purposes and do not necessarily limit the scope of this disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of this disclosure. Furthermore, the specification and drawings serve to explain the principles of this disclosure. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the specific embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation of this application.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure on the back side of the present invention; Figure 3This is a schematic diagram of the top structure of the present invention; Figure 4 This is a schematic diagram of the feed hopper part of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of the transmission plate portion of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of section B in the middle.

[0021] Icons: 1. Feed hopper; 2. Adjustable screen; 3. Winnowing device; 4. Transport pipe; 5. Smoke suction fan; 6. Hot air blower; 7. First drying cylinder; 8. Conveying pipe; 9. Pre-treatment mechanism; 901. Motor; 902. Transmission plate; 903. Transmission wheel; 904. Transmission belt; 905. Transmission rod; 906. Fixing plate; 907. Sleeve; 908. Connecting piece; 909. Fixing rod; 910. First magnetic attraction; 911. Second magnetic attraction; 912. Buffer plate; 913. Return spring; 914. Sealing plate; 915. Connecting rod; 10. Second drying cylinder; 11. Discharge pipe; 12. Smoke suction fan; 13. Distillation machine; 14. Lifting pump; 15. High and low temperature heating water tank; 16. Connecting frame; 17. Water vapor return pipe. Detailed Implementation

[0022] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0023] Example 1 A preferred embodiment of the cleaning and drying equipment for agricultural product processing provided by the present invention is as follows: Figures 1 to 7 As shown: A cleaning and drying device for agricultural product processing includes a connecting frame 16. A pre-treatment mechanism 9 is provided on the outside of the connecting frame 16. The pre-treatment mechanism 9 includes a motor 901, a transmission plate 902, a transmission wheel 903, a transmission belt 904, a transmission rod 905, a fixing plate 906, a sleeve 907, a connecting piece 908, a fixing rod 909, a first magnetic attraction 910, a second magnetic attraction 911, a buffer plate 912, a return spring 913, a closing plate 914, and a connecting rod 915. The motor 901 is fixed to the outside of the feed hopper 1 by the fixing rod 909. The output end of the motor 901 is connected to one of the transmission wheels 903. There are three transmission wheels 903 on the outside of the feed hopper 1. A transmission belt 904 is sleeved between the three transmission wheels 903. The central shaft of one of the transmission wheels 903 is connected to the transmission plate 902 on the inside of the feed hopper 1 to drive the transmission plate 902 to rotate and move the material in the feed hopper 1. Two transmission rods 905 are rotatably connected to the middle of two adjacent fixed plates 906 on both sides of the feed hopper 1, and are respectively connected to two other transmission wheels 903; Both transmission rods 905 have fixed connecting parts 908 on their outer sides, and both transmission rods 905 have sleeves 907 on their inner sides. A buffer plate 912 is vertically slidably connected to the inner side of the sleeve 907. A connecting rod 915 is fixedly connected to the inner side of both transmission rods 905. A return spring 913 is sleeved on the outer side of the connecting rod 915. One end of the return spring 913 is fixedly connected to the inner side of the buffer plate 912, and the other end is fixedly connected to the sealing plate 914. The sealing plate 914 is fixedly connected to the inner wall of the sleeve 907. One end of the connecting rod 915 is fixedly connected to a first magnet 910, and the outside of the connector 908 is fixedly connected to a second magnet 911. The first magnet 910 and the second magnet 911 are magnetically attracted to each other so as to achieve buffering through magnetic linkage when subjected to external force impact.

[0024] In this embodiment, the pretreatment mechanism 9 on the outside of the connecting frame 16 is driven to run by a motor 901 fixed to the outside of the feed hopper 1 via a fixing rod 909. The output end of the motor 901 is connected to one of the transmission wheels 903. The three transmission wheels 903 on the outside of the feed hopper 1 are linked by a transmission belt 904. The central shaft of one of the transmission wheels 903 is connected to the transmission plate 902 on the inside of the feed hopper 1 to drive it to rotate and move the material. Two transmission rods 905 are rotatably connected to the middle of two adjacent fixing plates 906 on the two side walls of the feed hopper 1 and connected to the other two transmission wheels 903. A sleeve 907 is provided on the inner side of the fixed connecting piece 908 on the outside of the transmission rod 905. A buffer plate 912 is vertically slidably connected on the inner side of the sleeve 907. A connecting rod 915 is fixed on the inner side of the transmission rod 905. A return spring 913 is sleeved on the outside of the connecting rod 915. One end of the return spring 913 is fixed. The other end of the buffer plate 912 is fixed to the sealing plate 914, which is fixed to the inner wall of the sleeve 907. One end of the connecting rod 915 is fixed to the first magnetic attraction 910, and the outer side of the connecting piece 908 is fixed to the second magnetic attraction 911. The first magnetic attraction 910 and the second magnetic attraction 911 are magnetically attracted together. When the material in the feed hopper 1 falls or the equipment is subjected to an external force impact, the magnetic linkage causes the transmission rod 905 to drive the buffer plate 912 to slide vertically along the sleeve 907. The return spring 913 and the sealing plate 914 provide elastic restoring force to absorb the impact energy and prevent the material from being damaged by violent collision. At the same time, the motor 901 drives the transmission plate 902 and the transmission wheel 903 to drive the transmission rod 905 and the magnetic buffer structure to work, so as to realize the buffering of the feeding impact and the uniform feeding of the material in the feed hopper 1, ensuring the stable operation of the equipment and the consistency of material processing.

[0025] In a further preferred embodiment of the present invention, a feed inlet is provided at the top of the feed hopper 1, and an adjustable screen 2 is connected below the feed inlet. The adjustable screen 2 is used to perform initial cleaning of the incoming agricultural products, removing large particles of impurities. The remaining materials continue to fall to the winnowing device 3 through the adjustable screen 2.

[0026] In this embodiment, a feed inlet is provided at the top of the feed hopper 1, and an adjustable screen 2 is connected below the feed inlet. The adjustable screen 2 uses a multi-layered sieve with different apertures or an adjustable tilt angle and vibration frequency structure to perform initial cleaning of the incoming agricultural products. When the material falls from the feed inlet into the adjustable screen 2, the screen removes large particles of impurities according to the particle size of the material, while smaller particles continue to fall through the screen to the winnowing machine 3. This design can adapt to the screening needs of agricultural products with different particle sizes, avoid large particles of impurities from entering subsequent stages and affecting the drying quality, and at the same time, the adjustable structure can flexibly meet the cleaning requirements of different materials, providing a preliminary purified material basis for subsequent winnowing and drying processes, ensuring the effectiveness and adaptability of the cleaning process.

[0027] In a further preferred embodiment of the present invention, the winnowing device 3 is fixedly connected to the inner side of the connecting frame 16, and the outer side of the winnowing device 3 is connected to the transport pipe 4. The winnowing device 3 lifts up the material after the initial cleaning and evenly sends it into the transport pipe 4. Small holes are arranged around the transport pipe 4. The bottom end is connected to a hot air blower 6 to deliver hot air into the pipe, and the top end is connected to a suction fan 5 to remove light impurities. The secondary cleaning is completed while the hot air is drying.

[0028] In this embodiment, the winnowing device 3 is fixedly connected to the inner side of the connecting frame 16, and its outer side is connected to the transport pipe 4. The winnowing device 3 uses the centrifugal force generated by rotation or vibration to lift the material after the initial cleaning and evenly send it into the transport pipe 4. Small holes are arranged around the transport pipe 4 to form a ventilation channel. The hot air blower 6 connected to its bottom end delivers hot air at a set temperature into the pipe. The hot air penetrates the material layer and takes away the surface moisture to achieve pre-drying. The suction fan 5 connected to the top end generates negative pressure suction at the same time to suck out light impurities such as dust and straw fragments mixed in the material through the small holes. The secondary cleaning is completed while the hot air is drying. This structure enables the material to be evenly dispersed and heated during the conveying process and effectively separates light impurities, avoiding impurities from entering the first drying cylinder 7 with the material and affecting the drying uniformity, thus improving the synergistic efficiency of cleaning and pre-drying.

[0029] In a further preferred embodiment of the present invention, the material after secondary cleaning enters the first drying cylinder 7. The outer side of the first drying cylinder 7 is wrapped with hot water pipes at a temperature of 40 to 60 degrees Celsius. The first drying cylinder 7 is equipped with an auger for conveying the material and a winnowing plate to lift the material in the cylinder so as to heat it evenly. The first drying drum 7 is tilted at a 15-degree angle, and uniform drying is achieved by the cooperation of the auger and winnowing discs.

[0030] In this embodiment, the material after secondary cleaning enters the first drying cylinder 7. Hot water pipes with a temperature of 40 to 60 degrees Celsius are wound around the outside of the first drying cylinder 7. The hot water in the pipes heats the cylinder wall through heat conduction. The auger installed inside the first drying cylinder 7 rotates along the cylinder axis to transport the material. At the same time, winnowing discs are driven by the auger or independently to lift the material to form a material curtain. The material curtain is in full contact with the cylinder wall to achieve uniform heating. The first drying cylinder 7 is tilted at 15 degrees so that the material moves slowly towards the outlet under the action of the auger and gravity, avoiding material accumulation and local overheating. Through the combination of auger conveying and winnowing disc winnowing, the material is heated evenly during the low-temperature slow drying process. This avoids the surface scorching of heat-sensitive agricultural products caused by direct high-temperature drying, and the slow movement ensures that the internal moisture evaporates gradually, achieving stable low-temperature drying in the first stage.

[0031] In a further preferred embodiment of the present invention, the first drying cylinder 7 is connected to the second drying cylinder 10 via the material conveying pipe 8. The outer side of the second drying cylinder 10 is wrapped with a hot water pipe with a temperature of 60 to 80 degrees Celsius. The second drying cylinder 10 is tilted at 10 degrees to further dry the material.

[0032] In this embodiment, the first drying cylinder 7 is connected to the second drying cylinder 10 via the conveying pipe 8. The outer side of the second drying cylinder 10 is wrapped with hot water pipes at a temperature of 60 to 80 degrees Celsius. The high-temperature hot water makes the cylinder wall temperature higher than that of the first drying cylinder 7. The second drying cylinder 10 is tilted at a 10-degree angle, which is smaller than that of the first drying cylinder 7, thus slowing down the material movement speed. After the material enters the second drying cylinder 10 through the conveying pipe 8, it continues to be conveyed under the action of the auger or its own gravity. The high-temperature cylinder wall and hot air further evaporate the residual moisture inside the material. The drying process is formed by the low-temperature slow drying of the first drying cylinder 7 and the high-temperature strong drying of the second drying cylinder 10, which not only protects the heat-sensitive components in the low-temperature stage but also improves the drying efficiency in the high-temperature stage, ensuring that materials with different humidity levels can reach the ideal dryness and ensuring stable drying quality.

[0033] In a further preferred embodiment of the present invention, the outer side of the second drying cylinder 10 is connected to the discharge pipe 11, and the dried and cleaned material is discharged from the discharge pipe 11.

[0034] In this embodiment, the outer side of the second drying cylinder 10 is connected to the discharge pipe 11. After the material is further dried in the second drying cylinder 10, it moves to the discharge port at the end of the second drying cylinder 10 under the action of the auger conveyor and the tilting of the cylinder body, and is discharged through the discharge pipe 11. The discharge pipe 11 can be equipped with valves or adjustment structures to control the discharge speed as needed, ensuring that the dried and cleaned material is output in an orderly manner. This design allows the dried material to directly enter the subsequent packaging or storage process, avoiding secondary pollution. At the same time, the fixed connection between the discharge pipe 11 and the connecting frame 16 ensures the stability of the discharge process, realizing continuous processing of the entire process from feeding to discharging, and improving the automation level and operating efficiency of the equipment.

[0035] Example 2 Based on Example 1, a preferred embodiment of the cleaning and drying equipment for agricultural product processing provided by the present invention is as follows: Figures 1 to 7 As shown: the water vapor generated by the first drying cylinder 7 and the second drying cylinder 10 is drawn in by the suction fan 12 located below them, and sent to the distillation machine 13 for distillation through the pipeline. The distilled water is sent to the high and low temperature heating water tank 15 through the water vapor return pipeline 17, and impurities are discharged through the impurity conveying pipeline.

[0036] In this embodiment, the water vapor generated by the first drying cylinder 7 and the second drying cylinder 10 is drawn in by the suction fan 12 located below them. The suction fan 12 uses negative pressure to send the hot and humid gas inside the cylinder into the distillation machine 13 through a pipe. The distillation machine 13 separates the water vapor from the impurities by heating. The water vapor is condensed to form distilled water, and the impurities are discharged through the impurity conveying pipe. The distilled water is then transported into the high and low temperature heating water tank 15 through the water vapor return pipe 17. This process converts the water vapor that was originally directly discharged into usable distilled water resources, avoids the loss of heat energy with the water vapor, and at the same time, the separated impurities are centrally treated to reduce environmental pollution. This realizes the recovery of water vapor and the removal of impurities, provides a water source for subsequent heat energy circulation, and improves the energy and resource utilization efficiency of the equipment.

[0037] In a further preferred embodiment of the present invention, the lower part of the high and low temperature heating water tank 15 contains low temperature water with a temperature of 40 to 60 degrees Celsius, the upper part contains high temperature water with a temperature of 60 to 80 degrees Celsius, and a heat insulation separation baffle is provided in the middle. Heating rods are provided at the top, bottom and middle of the high and low temperature heating water tank 15. A lifting pump 14 is provided on the left side of the high and low temperature heating water tank 15. The lifting pump 14 only allows low temperature water to flow into the high temperature water zone. An external water supply pipeline is provided in the low temperature water zone.

[0038] In this embodiment, the lower part of the high and low temperature heating water tank 15 contains low-temperature water at a temperature of 40 to 60 degrees Celsius, and the upper part contains high-temperature water at a temperature of 60 to 80 degrees Celsius. A heat-insulating separation baffle is provided in the middle to prevent direct mixing of the upper and lower water. Heating rods are provided in the upper, lower and middle parts of the water tank, which can heat and control the water in the low-temperature zone and the high-temperature zone as needed. The lifting pump 14 on the left side of the water tank allows low-temperature water to flow from the low-temperature zone to the high-temperature zone only through a one-way valve or a special structure, preventing the high-temperature water from flowing back. An external water supply pipeline is provided in the low-temperature water zone to replenish the water lost due to evaporation or recycling. This structure achieves directional flow of low-temperature water to high-temperature water through the lifting pump 14. With the precise temperature control of the heating rods, it ensures that the high and low temperature heating water tank 15 can stably provide hot water at the corresponding temperature to the first drying cylinder 7 and the second drying cylinder 10, maintaining the stability of the drying temperature zone.

[0039] In a further preferred embodiment of the present invention, the high and low temperature heating water tank 15 provides hot water of corresponding temperature to the hot water pipes of the first drying cylinder 7 and the second drying cylinder 10 through water pipes, so as to form a low temperature drying zone in the first drying cylinder 7 and a high temperature drying zone in the second drying cylinder 10.

[0040] In this embodiment, the high and low temperature heating water tank 15 supplies hot water at the corresponding temperature to the hot water pipes of the first drying cylinder 7 and the second drying cylinder 10 through water pipes. Valves or pumps can be installed on the water pipes to control the flow rate, so that the hot water pipe of the first drying cylinder 7 is circulated with low temperature water at 40 to 60 degrees Celsius to form a low temperature drying zone, and the hot water pipe of the second drying cylinder 10 is circulated with high temperature water at 60 to 80 degrees Celsius to form a high temperature drying zone. Through the zoned temperature control and hot water supply of the high and low temperature heating water tank 15, the temperature zones of the first drying cylinder 7 (low temperature slow drying) and the second drying cylinder 10 (high temperature strong drying) are progressively achieved. This not only meets the drying needs of different heat-sensitive agricultural products, but also reduces energy waste through the cascade utilization of heat energy, improves drying efficiency and energy utilization, and ensures that materials with different moisture content can reach the ideal dryness.

[0041] In a further preferred embodiment of the present invention, the inner side of the sleeve 907 of the pretreatment mechanism 9 is fixedly connected to the two side walls of the feed hopper 1, and two fixed plates 906 are fixedly connected to each side wall of the feed hopper 1. Two transmission rods 905 are rotatably connected to the middle of two adjacent fixed plates 906, and are respectively connected to the inner side of two other transmission wheels 903, so that the motor 901 drives the transmission plate 902 and the transmission wheel 903 to drive the transmission rod 905 and the magnetic buffer structure to work, thereby realizing the buffering of the impact of feeding and the uniform feeding of the material in the feed hopper 1.

[0042] In this embodiment, the inner side of the sleeve 907 of the pretreatment mechanism 9 is fixedly connected to the two side walls of the feed hopper 1. Two fixed plates 906 are fixedly connected to each side wall of the feed hopper 1. Two transmission rods 905 are rotatably connected to the middle of two adjacent fixed plates 906 and are respectively connected to the inner side of two other transmission wheels 903. When the motor 901 starts, the output shaft of the motor 901 drives one of the transmission wheels 903 to rotate. This transmission wheel 903 causes the other two transmission wheels 903 to rotate synchronously through the transmission belt 904. One of the transmission wheels 903 drives the transmission plate 902 inside the feed hopper 1 to rotate. The moving part moves the material, while the other two drive wheels 903 drive the drive rod 905 to rotate around the middle of the fixed plate 906. When the drive rod 905 rotates, it drives the connecting rod 915 and the buffer plate 912 to slide vertically along the sleeve 907 through the magnetic attraction of the first magnet 910 and the second magnet 911. The return spring 913 and the closing plate 914 provide elastic restoring force to achieve buffering of the impact of the material feeding. At the same time, the rotation of the drive plate 902 makes the material in the feed hopper 1 evenly disperse and fall, avoiding material accumulation or concentrated impact, and achieving uniform feeding of the material in the feed hopper 1, ensuring the stable operation of the equipment and the consistency of material processing.

[0043] In summary, during operation, the cleaning and drying equipment for agricultural product processing receives materials through the inlet of the feed hopper 1. The materials undergo initial cleaning via the adjustable screen 2, removing large particles of impurities. The remaining material falls onto the winnowing device 3, which is fixed inside the connecting frame 16 and connected to the transport pipe 4 on its outer side. This winnowing device lifts the initially cleaned material and evenly feeds it into the transport pipe 4. Small holes are arranged around the transport pipe 4, and a hot air blower 6 connected to the bottom delivers hot air into the pipe. A suction fan 5 connected to the top simultaneously draws in air, completing a secondary cleaning process while the hot air is drying, removing light impurities. The material after secondary cleaning enters the first drying drum 7. Hot water pipes with a temperature of 40 to 60 degrees Celsius are wound around the outside of the first drying drum 7. An auger is installed inside the drum to transport the material, and winnowing blades lift the material inside the drum to ensure even heating. The first drying drum 7 is tilted at 15 degrees. The auger and winnowing blades work together to achieve uniform drying. Then the material enters the second drying drum 10 through the conveying pipe 8. Hot water pipes with a temperature of 60 to 80 degrees Celsius are wound around the outside of the second drying drum 10. The material is tilted at 10 degrees to further dry it. Finally, it is discharged through the discharge pipe 11, completing the drying and cleaning process. The water vapor generated by the first drying cylinder 7 and the second drying cylinder 10 is drawn in by the suction fan 12 located below them and sent to the distillation machine 13 for distillation through the pipeline. The distilled water is sent to the high and low temperature heating water tank 15 through the water vapor return pipeline 17. Impurities are discharged through the impurity conveying pipeline. The lower part of the high and low temperature heating water tank 15 contains low temperature water at a temperature of 40 to 60 degrees Celsius, and the upper part contains high temperature water at a temperature of 60 to 80 degrees Celsius. A heat insulation separation baffle is set in the middle. Heating rods are set in the upper, lower and middle parts. The lifting pump 14 on the left side of the water tank only allows low temperature water to flow into the high temperature water zone. The low temperature water zone is equipped with an external water supply pipeline. The high and low temperature heating water tank 15 provides hot water of the corresponding temperature to the hot water pipes of the first drying cylinder 7 and the second drying cylinder 10 through water pipes. A low temperature drying zone is formed in the first drying cylinder 7 and a high temperature drying zone is formed in the second drying cylinder 10, realizing continuous drying in different temperature zones. The motor 901 on the outside of the feed hopper 1 is fixed by a fixing rod 909, and its output end is connected to one of the transmission wheels 903. A transmission belt 904 is sleeved between the three transmission wheels 903 on the outside of the feed hopper 1. The central shaft of one of the transmission wheels 903 is connected to the transmission plate 902 on the inside of the feed hopper 1, which can drive the transmission plate 902 to rotate and move the material in the feed hopper 1. Two transmission rods 905 are respectively rotatably connected to the middle of two adjacent fixing plates 906 on the two side walls of the feed hopper 1, and are respectively connected to the other two transmission wheels 903. The transmission rod 905 has a fixed connecting piece 908 on the outside, a sleeve 907 on the inside, and a buffer plate 912 that slides vertically inside the sleeve 907. The pretreatment mechanism 9 consists of a connecting rod 915 inside the transmission rod 905, a return spring 913 sleeved on the outside of the connecting rod 915, a sealing plate 914 fixed to the inner wall of the sleeve 907, a first magnetic attraction 910 at one end of the connecting rod 915 and a second magnetic attraction 911 on the outside of the connecting piece 908 (the two are magnetically attracted to each other). When subjected to external impact, the pretreatment mechanism is buffered by magnetic linkage. At the same time, the motor 901 drives the transmission plate 902 and the transmission wheel 903 to drive the transmission rod 905 and the magnetic buffer structure to work, thereby achieving buffering of the impact of feeding and uniform feeding of materials in the feeding hopper 1, ensuring the stability of equipment operation and the consistency of material processing.

[0044] Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this disclosure.

[0045] In the description of this disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0047] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0048] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A cleaning and drying device for agricultural product processing, comprising a connecting frame (16), a pre-treatment mechanism (9) provided on the outside of the connecting frame (16), the pre-treatment mechanism (9) comprising a motor (901), a transmission plate (902), a transmission wheel (903), a transmission belt (904), a transmission rod (905), a fixing plate (906), a sleeve (907), a connector (908), a fixing rod (909), a first magnetic attraction (910), a second magnetic attraction (911), a buffer plate (912), a return spring (913), a closing plate (914), and a connecting rod (915); The motor (901) is fixed to the outside of the feed hopper (1) by the fixing rod (909). The output end of the motor (901) is connected to one of the transmission wheels (903). There are three transmission wheels (903) on the outside of the feed hopper (1). A transmission belt (904) is sleeved between the three transmission wheels (903). The central shaft of one of the transmission wheels (903) is connected to the transmission plate (902) on the inside of the feed hopper (1) to drive the transmission plate (902) to rotate and move the material in the feed hopper (1). Two transmission rods (905) are rotatably connected to the middle of two adjacent fixed plates (906) on both sides of the feed hopper (1), and are respectively connected to two other transmission wheels (903); Both transmission rods (905) have a fixed connector (908) on their outer side, and both transmission rods (905) have a sleeve (907) on their inner side. A buffer plate (912) is vertically slidably connected to the inner side of the sleeve (907). A connecting rod (915) is fixedly connected to the inner side of both transmission rods (905). A return spring (913) is sleeved on the outer side of the connecting rod (915). One end of the return spring (913) is fixedly connected to the inner side of the buffer plate (912), and the other end is fixedly connected to the sealing plate (914). The sealing plate (914) is fixedly connected to the inner wall of the sleeve (907). One end of the connecting rod (915) is fixedly connected to a first magnetic attraction (910), and the outside of the connector (908) is fixedly connected to a second magnetic attraction (911). The first magnetic attraction (910) and the second magnetic attraction (911) are magnetically attracted to each other so as to achieve buffering through magnetic linkage when subjected to external force impact.

2. The cleaning and drying equipment for agricultural product processing according to claim 1, characterized in that, The top of the feed hopper (1) is provided with a feed inlet, and an adjustable screen (2) is connected below the feed inlet. The adjustable screen (2) is used to perform initial cleaning of the incoming agricultural products, screen out large particles of impurities, and the remaining materials continue to fall to the winnowing device (3) through the adjustable screen (2).

3. The cleaning and drying equipment for agricultural product processing according to claim 2, characterized in that, The winnowing device (3) is fixedly connected to the inner side of the connecting frame (16), and the outer side of the winnowing device (3) is connected to the transport pipe (4). The winnowing device (3) lifts up the material after the initial cleaning and evenly sends it into the transport pipe (4). The transport pipe (4) has small holes around its perimeter. A hot air blower (6) is connected to its bottom end to deliver hot air into the pipe, and a suction fan (5) is connected to its top end to remove light impurities. The secondary cleaning is completed while the hot air is drying.

4. The cleaning and drying equipment for agricultural product processing according to claim 3, characterized in that, The material after secondary cleaning enters the first drying cylinder (7). Hot water pipes with a temperature of 40 to 60 degrees Celsius are wound around the outside of the first drying cylinder (7). The first drying cylinder (7) is equipped with an auger for conveying the material and a winnowing plate to lift the material in the cylinder so that it is heated evenly. The first drying drum (7) is tilted at a 15-degree angle, and uniform drying is achieved by the cooperation of the auger and winnowing discs.

5. The cleaning and drying equipment for agricultural product processing according to claim 4, characterized in that, The first drying cylinder (7) is connected to the second drying cylinder (10) via the material conveying pipe (8). The outer side of the second drying cylinder (10) is wrapped with a hot water pipe with a temperature of 60 to 80 degrees Celsius. The second drying cylinder (10) is tilted at 10 degrees to further dry the material.

6. The cleaning and drying equipment for agricultural product processing according to claim 5, characterized in that, The outer side of the second drying drum (10) is connected to the discharge pipe (11), and the dried and cleaned material is discharged through the discharge pipe (11).

7. The cleaning and drying equipment for agricultural product processing according to claim 1, characterized in that, The water vapor generated by the first drying cylinder (7) and the second drying cylinder (10) is drawn in by the suction fan (12) located below them and sent to the distillation machine (13) through the pipeline for distillation. The distilled water is transported to the high and low temperature heating water tank (15) through the water vapor return pipeline (17), and impurities are discharged through the impurity conveying pipeline.

8. The cleaning and drying equipment for agricultural product processing according to claim 7, characterized in that, The lower part of the high and low temperature heating water tank (15) contains low temperature water at a temperature of 40 to 60 degrees Celsius, and the upper part contains high temperature water at a temperature of 60 to 80 degrees Celsius. A heat insulation separation baffle is provided in the middle. Heating rods are provided at the top, bottom and middle of the high and low temperature heating water tank (15). A lifting pump (14) is provided on the left side of the high and low temperature heating water tank (15). The lifting pump (14) only allows low temperature water to flow into the high temperature water area. An external water supply pipeline is provided in the low temperature water area.

9. The cleaning and drying equipment for agricultural product processing according to claim 8, characterized in that, The high and low temperature heating water tank (15) supplies hot water of the corresponding temperature to the hot water pipes of the first drying cylinder (7) and the second drying cylinder (10) through water pipes, so as to form a low temperature drying zone in the first drying cylinder (7) and a high temperature drying zone in the second drying cylinder (10).

10. The cleaning and drying equipment for agricultural product processing according to claim 1, characterized in that, The inner side of the sleeve (907) of the pretreatment mechanism (9) is fixedly connected to the two side walls of the feed hopper (1). Two fixed plates (906) are fixedly connected to each side wall of the feed hopper (1). Two transmission rods (905) are rotatably connected to the middle of the two adjacent fixed plates (906) and are respectively connected to the inner side of the other two transmission wheels (903). This allows the motor (901) to drive the transmission plate (902) and the transmission wheel (903) to drive the transmission rod (905) and the magnetic buffer structure to work simultaneously, thereby achieving buffering of the impact of the feed and uniform feeding of the material in the feed hopper (1).

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