Wild hippophae rhamnoides leaf efficient roasting machine

Abstract

The present invention discloses a wild hippophae rhamnoides leaf efficient roasting machine, and relates to the technical field of hippophae rhamnoides leaf processing, the wild hippophae rhamnoides leaf efficient roasting machine comprises a base, the top of the base is provided with a fixed bin, the fixed bin is fixedly connected with the base, the fixed bin is internally provided with a roller, and one end of the roller is provided with a detachable sealing cover for feeding materials; a driving mechanism is arranged on the surface of the base, and a negative pressure environment in the fixed bin is constructed through the vacuum pump, so that the boiling point of water is remarkably reduced, and rapid dehydration of the sea-buckthorn leaves at low temperature is realized; the oxidative degradation of heat-sensitive components is effectively inhibited, and the color and the nutritional value are reserved; in combination with a condensation and filtering unit, water vapor latent heat recovery and particle impurity interception are realized, the thermal efficiency and the operation stability of the system are improved, and reliable guarantee is provided for preparation of high-quality dried sea-buckthorn leaf products; a mechanical linkage type drainage mechanism is integrated, a roller rotates to drive a rack and a tooth block to be meshed, and a piston system is driven to achieve intermittent pumping drainage of condensate water.

Description

Technical Field

[0001] This invention relates to the field of sea buckthorn leaf processing technology, and in particular to a high-efficiency roasting and drying machine for wild sea buckthorn leaves. Background Technology

[0002] With the expanding applications of sea buckthorn leaves in the food, health product, and traditional Chinese medicine sectors, the market demand for high-quality dried sea buckthorn leaves is increasing. Traditional drying methods for sea buckthorn leaves primarily involve natural sun-drying or hot air drying, but these methods generally suffer from long drying cycles, high energy consumption, easy loss of active ingredients, dull color, and susceptibility to environmental pollution. Especially in the processing of wild sea buckthorn leaves, due to their thin, delicate leaves and abundant surface hairs, traditional drying methods are more prone to causing leaf breakage and significant nutrient loss, severely impacting the product's appearance and medicinal value.

[0003] Currently, some companies are trying to use drum-type drying equipment to dry sea buckthorn leaves in order to improve drying efficiency and automation. However, existing drying equipment still has many shortcomings in practical applications. On the one hand, the internal environment of traditional drying machines is at normal pressure, the boiling point of water is relatively high, and the drying temperature is generally too high. This causes sea buckthorn leaves to easily oxidize and turn brown at high temperatures, and heat-sensitive components such as chlorophyll and vitamin C are degraded in large quantities.

[0004] Existing dryers typically employ an open or external air circulation structure, where the hot and humid gases generated during the drying process are directly discharged, resulting in a large amount of heat being lost to the outside with the water vapor, leading to low thermal energy utilization and a significant increase in energy consumption. To address this, the present invention proposes a vacuum drum drying machine for wild sea buckthorn leaves, which uses vacuum and low temperature to suppress the loss of heat-sensitive components and uses a closed-loop waste heat self-circulation system to reduce heat leakage. Summary of the Invention

[0005] One objective of this invention is to provide a high-efficiency drying machine for wild sea buckthorn leaves. This invention can suppress the loss of heat-sensitive components under vacuum and low temperature, and reduce the problem of heat leakage by using a closed-loop waste heat self-circulation system.

[0006] A high-efficiency drying machine for wild sea buckthorn leaves according to an embodiment of the present invention includes a base, a fixed chamber at the top of the base, the fixed chamber being fixedly connected to the base, a roller inside the fixed chamber with spiral guide vanes inside, a removable sealing cap at one end of the roller for feeding materials, a driving mechanism on the surface of the base for driving the roller to rotate, the inside of the roller for holding sea buckthorn leaves, and rollers on both sides of the roller being supported by rollers, the rollers being bolted to the surface of the base, and an electric heating rod installed on the inner wall of the fixed chamber for heating the inside of the fixed chamber. The fixed chamber has a heat exchange mechanism at one top end, with one end connected to the interior of the fixed chamber and the other end connected to a condensing mechanism. The heat exchange mechanism recovers waste heat from the condensing mechanism. The other end of the condensing mechanism is connected to a filtration mechanism, which condenses water vapor inside the fixed chamber. The other end of the filtration mechanism is also connected to the interior of the fixed chamber, filtering the air input to the condensing mechanism. A heat dissipation chamber is located below the condensing mechanism, filled with cooling water and equipped with a built-in water pump. The output end of the water pump is connected to the input end of the condensation mechanism for internal cooling. A vacuum pump is installed on the top of the heat dissipation chamber, and one end of the vacuum pump is connected to the inside of the fixed chamber. By constructing a closed vacuum drying system composed of a fixed chamber, roller, electric heating rod, vacuum pump, condensation mechanism, heat exchange mechanism, filtration mechanism, and heat dissipation chamber, the air in the fixed chamber is quickly removed by the vacuum pump during the sea buckthorn leaf processing to create a low-pressure environment, which significantly lowers the boiling point of water. This allows the sea buckthorn leaves to quickly vaporize and dehydrate at a lower temperature, shortening the overall drying cycle and reducing the high-temperature duration. Meanwhile, the continuous rotation of the drum ensures that the leaves are heated evenly, avoiding local overheating that could lead to nutrient decomposition and darkening of color. The condensation mechanism immediately captures water vapor and recovers latent heat, while the heat exchange mechanism uses the recovered heat to preheat the return air, reducing the extra energy consumption of the electric heating rod. The filtration mechanism simultaneously intercepts lint and dust to prevent impurities from circulating and adhering. The heat dissipation chamber continuously provides cooling water to ensure condensation efficiency. Thus, while saving energy and reducing consumption, the temperature and humidity balance in the fixed chamber is maintained, eliminating the problems of scorching, nutrient loss, and appearance deterioration that are prone to occur in traditional high-temperature drying, achieving efficient, low-consumption, and high-quality drying of wild sea buckthorn leaves.

[0007] Furthermore, the drive mechanism includes a motor mount, which is connected to the base by bolts. A drive motor is mounted on the top of the motor mount by bolts. The output end of the drive motor is connected to a reducer, and the output end of the reducer is connected to a transmission gear key. The transmission gear meshes with a gear ring, which is bolted to the outside of the drum. The drum surface is provided with an annular groove for limiting the front and rear movement of the drum, and the groove on the drum surface is rotatably connected to the fixed chamber through an oil seal bearing.

[0008] Furthermore, the drainage mechanism includes a drainage component and a pressure component. The drainage component is internally connected to the condensation mechanism and is used to discharge condensate from the condensation mechanism. The drainage end of the drainage component is connected to an external water pipe. The pressure component is located within the drainage component and cooperates with the roller to discharge water stored inside the drainage component.

[0009] Furthermore, the drainage assembly includes a drain pipe, one bottom end of which is connected to the inner cavity of the top end of the piston tube. The piston tube is divided into upper and lower cavities, which are connected by a circular hole. A lifting plug is slidably connected inside the circular hole between the two cavities. The lifting plug has annular protruding structures on its top and bottom edges. The lifting plug has a hollow structure inside and a closed structure at its bottom. A first spring is fitted outside the lifting plug. The outer wall of the lifting plug has annularly spaced grooves. One side of the lower cavity of the piston tube is connected to a one-way valve, and a control valve is installed at the output end of the one-way valve.

[0010] Furthermore, the pressure assembly includes a piston rod, the outer wall of which slides in contact with the bottom end of the piston tube, and a suction piston is fitted at the top end of the piston rod. The outer wall of the suction piston is tightly fitted with the inner wall of the lower end of the piston tube's internal cavity. A second spring is fitted outside the piston rod. A connecting block is fixedly installed at the bottom end of the piston rod, and a strip-shaped protruding structure is provided on the outside of the piston rod for limiting the rotation of the piston rod. A toothed block is installed on one side of the connecting block by screws, and a rack is installed on the outer wall of the roller by bolts. The rack has an arc-shaped structure, and the rack meshes with the toothed block through the rotation of the roller.

[0011] Furthermore, the heat exchange mechanism includes a guide pipe, inside which a return gas pipe is provided. The return gas pipe is connected to the gas outlet of the condensing mechanism. A cavity is provided between the guide pipe and the return gas pipe, and both ends of the cavity between the guide pipe and the return gas pipe are respectively connected to a return water pipe and a cold water pipe. The return water pipe is connected to the drain end of the condensing mechanism, and the cold water pipe is connected to the interior of the heat dissipation chamber. A fan is provided at the top of the other end of the return gas pipe. A guide shroud is installed at both the bottom and top of the fan. The fan is connected to one end of a connecting pipe, and the other end of the connecting pipe is connected to the top of the fixed chamber. The fan is a temperature-resistant fan.

[0012] Furthermore, two second guide plates are fixedly installed inside the cavity between the guide pipe and the return pipe, and two first guide plates are installed inside the return pipe. Both the first and second guide plates have a spiral structure and are made of copper-aluminum composite material.

[0013] Furthermore, the condensation mechanism includes a condensation tank, which is mounted above the heat dissipation chamber via a bracket. The condensation tank has connecting slots at both ends. One end of the connecting slot is connected to a water pump inside the heat dissipation chamber via a pipe, and the other end of the connecting slot is connected to a return water pipe. The condensation slots at both ends of the condensation tank are connected to each other via multiple heat exchange pipes, with gaps between adjacent heat exchange pipes. One end of the central cavity of the condensation tank is connected to the interior of the return air pipe, and the other end of the central cavity is connected to the air inlet pipe.

[0014] Furthermore, the filtration mechanism includes a hot air duct that connects to the top of the fixed chamber and has its output end connected to the inside of the filter cylinder. A coarse filter screen is installed inside the filter cylinder, with one bottom end connected to the filter cylinder via a set bolt. A third spring is fitted around the outside of the coarse filter screen, and a scraper is positioned above the third spring. The scraper fits tightly against the outer wall of the coarse filter screen, with one top end connected to a lifting block. The lifting block is fitted around the fine filter screen. A solenoid valve is installed at the top of the filter cylinder and is electrically connected to a remote control terminal.

[0015] Furthermore, the filter screen has a hollow internal structure, and one end of the filter screen is closed. The outer wall of the filter screen is provided with ventilation holes, and one edge of the top end of the filter screen is provided with an annular protrusion. The bottom of the filter screen is fixedly connected to the connecting pipe, and the other end of the connecting pipe is connected to one end of the air inlet pipe of the condenser. There is a gap between the filter screen and the coarse filter screen, and the bottom of the filter cylinder is threaded with a screw cap for cleaning the inside of the filter cylinder.

[0016] The beneficial effects of this invention are: This invention utilizes a vacuum pump to create a negative pressure environment within a fixed chamber, significantly lowering the boiling point of water and enabling rapid dehydration of sea buckthorn leaves at low temperatures. This effectively inhibits the oxidative degradation of heat-sensitive components, preserving their color and nutritional value. Combined with condensation and filtration units, it achieves latent heat recovery of water vapor and retention of particulate impurities, improving system thermal efficiency and operational stability, and providing a reliable guarantee for the preparation of high-quality dried sea buckthorn leaves.

[0017] This invention integrates a mechanically linked drainage mechanism, utilizing the rotation of a roller to drive the meshing of a rack and pinion system, which in turn drives a piston system to intermittently pump out condensate. This structure achieves pump-free condensate drainage while maintaining the integrity of the vacuum chamber, preventing backflow of external air and reducing the load on the vacuum pump and system energy consumption. Simultaneously, the damping effect of the control valve buffers the piston reset impact, extending the service life of the mechanism.

[0018] This invention employs a closed-loop integrated condensation-heat exchange design: Water vapor in the condenser is condensed by cooling water, and the latent heat of condensation is absorbed by the cooling water and introduced into the heat exchange mechanism to preheat the returning dry air, achieving cascaded energy utilization; after heating, the cooling water flows back to the heat dissipation chamber, reducing the heat load on the cooling system. This system significantly improves thermal energy utilization, reduces electric heating power consumption, and achieves energy-saving and consumption-reducing goals.

[0019] This invention features a coarse-fine dual-stage filtration structure that effectively intercepts fuzz and dust from the surface of sea buckthorn leaves, preventing impurities from depositing on the condenser heat exchange surface and ensuring heat exchange efficiency. The system incorporates a differential pressure-driven backflushing mechanism: external air is instantaneously introduced via a solenoid valve, driving the lifting block and scraper to work in tandem, achieving mechanical scraping of the coarse screen and backflushing cleaning of the fine screen, completing a powerless self-cleaning process. The bottom screw cap design facilitates centralized slag discharge, significantly improving maintenance convenience and the system's continuous operation capability. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of a high-efficiency roasting and drying machine for wild sea buckthorn leaves proposed in this invention; Figure 2 This is a top view schematic diagram of a high-efficiency roasting and drying machine for wild sea buckthorn leaves proposed in this invention.

[0022] Figure 3 This is a front view structural diagram of a high-efficiency roasting and drying machine for wild sea buckthorn leaves proposed in this invention.

[0023] Figure 4 This is a side view of the structure of a high-efficiency roasting and drying machine for wild sea buckthorn leaves proposed in this invention.

[0024] Figure 5 This is a schematic diagram of the internal structure of a high-efficiency roasting and drying machine for wild sea buckthorn leaves proposed in this invention.

[0025] Figure 6 This invention proposes a high-efficiency roasting and drying machine for wild sea buckthorn leaves. Figure 5 Enlarged structural diagram at point A in the middle.

[0026] Figure 7 This is a schematic diagram of the drum structure of a high-efficiency roasting and drying machine for wild sea buckthorn leaves proposed in this invention.

[0027] Figure 8 This is a schematic diagram of the filtration mechanism of a high-efficiency roasting and drying machine for wild sea buckthorn leaves proposed in this invention.

[0028] Figure 9Exploded view of the filtration mechanism of a high-efficiency roasting and drying machine for wild sea buckthorn leaves proposed in this invention. Figure 10 This is a schematic diagram of the condensation mechanism of a high-efficiency roasting and drying machine for wild sea buckthorn leaves proposed in this invention.

[0029] Figure 11 This is a schematic diagram of the first and second guide plates of a high-efficiency roasting and drying machine for wild sea buckthorn leaves proposed in this invention. Figure 12 This is a schematic diagram of the drainage mechanism of a high-efficiency roasting and drying machine for wild sea buckthorn leaves proposed in this invention. Figure 13 This is an exploded view of the drainage mechanism of a high-efficiency roasting and drying machine for wild sea buckthorn leaves proposed in this invention.

[0030] In the diagram: 1. Base; 2. Fixed chamber; 3. Roller; 4. Sealing cover; 5. Drive mechanism; 51. Motor base; 52. Drive motor; 53. Reducer; 54. Transmission gear; 55. Gear ring; 6. Drainage mechanism; 61. Drain pipe; 62. Piston pipe; 63. Lifting plug; 64. First spring; 65. One-way valve; 66. Control valve; 67. Piston rod; 68. Suction piston; 69. Second spring; 610. Connecting block; 611. Gear block; 612. Rack; 7. Heat exchange mechanism; 71. Guide pipe; 72. Return pipe; 73. Fan; 74. Connecting pipe; 05. Flow guide shroud; 76. First flow guide plate; 77. Second flow guide plate; 78. Return water pipe; 79. Cold water pipe; 8. Condensation mechanism; 81. Condensation tank; 82. Air inlet pipe; 83. Connecting groove; 84. Heat exchange pipe; 9. Filtration mechanism; 91. Hot air pipe; 92. Filter cylinder; 93. Coarse filter screen; 94. Third spring; 95. Scraper; 96. Lifting block; 97. Solenoid valve; 98. Fine filter screen; 99. Vent hole; 910. Set bolt; 911. Connecting pipe; 912. Screw cap; 10. Heat dissipation chamber; 11. Vacuum pump; 12. Electric heating rod; 13. Roller. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0032] refer to Figure 1-7The system includes a base 1, a fixed chamber 2 on top of the base 1, and a fixed connection between the fixed chamber 2 and the base 1. A roller 3 is installed inside the fixed chamber 2, and a removable sealing cap 4 is installed at one end of the roller 3 for feeding materials. A drive mechanism 5 is installed on the surface of the base 1 to drive the roller 3 to rotate. Sea buckthorn leaves are placed inside the roller 3, and the roller 3 is supported on both sides by rollers 13, which are bolted to the surface of the base 1. An electric heating rod 12 is installed on the inner wall of the fixed chamber 2 for heating the interior of the fixed chamber 2. A heat exchange mechanism 7 is installed at the top of one end of the fixed chamber 2, with one end of the heat exchange mechanism 7 connected to the interior of the fixed chamber 2 and the other end connected to a condenser. The condensing mechanism 8 is connected to the heat exchange mechanism 7, which is used to recover the waste heat inside the condensing mechanism 8. The other end of the condensing mechanism 8 is connected to the filter mechanism 9, which is used to condense water vapor inside the fixed chamber 2. The other end of the filter mechanism 9 is connected to the inside of the fixed chamber 2, which is used to filter the air at the input end of the condensing mechanism 8. A heat dissipation chamber 10 is set below the condensing mechanism 8. The heat dissipation chamber 10 is filled with cooling water and has a built-in water pump. The output end of the water pump inside the heat dissipation chamber 10 is connected to the input end of the condensing mechanism 8 for cooling the inside of the condensing mechanism 8. A vacuum pump 11 is installed on the top of the heat dissipation chamber 10, and one end of the vacuum pump 11 is connected to the inside of the fixed chamber 2. In this implementation scheme, a low-oxygen, low-pressure environment is first established in the fixed chamber 2 using a vacuum pump 11, causing a sharp drop in the boiling point of water. This allows the sea buckthorn leaves to be quickly dehydrated at a lower temperature, significantly shortening the drying time while retaining heat-sensitive nutrients. The drum 3 rotates at a uniform speed under drive, constantly repositioning the leaves to prevent localized scorching and uneven cooking. Water vapor is continuously captured by the condensation mechanism 8 and quickly liquefied before being discharged. The fixed chamber 2 is always kept at low humidity and low pressure, further improving dehydration efficiency and preventing aroma from escaping with the moisture. The heat released by condensation is recovered by the heat exchange mechanism 7 and used to preheat the return air, reducing the extra work done by the electric heating rod 12 and lowering overall energy consumption. The filtration mechanism 9 intercepts lint and dust in the airflow, preventing impurities from re-attaching to the leaves or clogging the heat exchange channels, ensuring a clean drying environment and lasting color. Under the dual action of vacuum and hot air, the entire system accelerates moisture migration and reduces oxidation, ultimately yielding wild sea buckthorn leaves that are uniformly dried and have a high nutrient retention rate. At the same time, it removes moisture without venting and reuses residual heat, achieving efficient and energy-saving integrated drying. Furthermore, all electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that provides control.

[0033] refer to Figure 5 , Figure 6 , Figure 12 and Figure 13The drive mechanism 5 includes a motor base 51, which is connected to the base 1 by bolts. A drive motor 52 is mounted on the top of the motor base 51 by bolts. The output end of the drive motor 52 is connected to the reducer 53. The output end of the reducer 53 is connected to the transmission gear 54 by a key. The transmission gear 54 meshes with a gear ring 55, which is bolted to the outside of the roller 3. The roller 3 has an annular groove on its surface for limiting the front and rear movement of the roller 3. The groove on the surface of the roller 3 is rotatably connected to the fixed chamber 2 through an oil seal bearing. The drainage mechanism 6 includes a drainage assembly and a pressure assembly. The drainage assembly is internally connected to the condensation mechanism 8 and is used to drain condensate from the condensation mechanism 8. The drain end of the drainage assembly is connected to an external water pipe. A pressure assembly is located within the drainage assembly and cooperates with the roller 3 to drain water stored inside the drainage assembly. The drainage assembly includes a drain pipe 61, one bottom end of which is connected to the internal cavity of the top end of a piston tube 62. The piston tube 62 is internally divided into upper and lower cavities, which are connected by a circular hole. A lifting plug 63 is slidably connected inside the circular hole. The top and bottom edges of the lifting plug 63 are provided with annular protruding structures. The interior of the lifting plug 63 is hollow, and the bottom of the lifting plug 63 is closed. A first spring 64 is fitted onto the outside of the lifting plug 63. The outer wall of the lifting plug 63 has annularly spaced grooves. One side of the lower cavity of the piston tube 62 is connected to a one-way valve 65. A control valve 66 is installed at the output end of the one-way valve 65. The pressure assembly includes a piston rod 67. The outer wall of the piston rod 67 is in slidable contact with one bottom end of the piston tube 62. A suction piston 68 is fitted at the top end, and the outer wall of the suction piston 68 is tightly fitted with the inner wall of the lower end of the piston tube 62. A second spring 69 is fitted on the outside of the piston rod 67. A connecting block 610 is fixedly installed at the bottom end of the piston rod 67, and a strip-shaped protruding structure is provided on the outside of the piston rod 67 for limiting the rotation of the piston rod 67. A toothed block 611 is installed on one side of the connecting block 610 by screws. A rack 612 is installed on the outer wall of the roller 3 by bolts. The rack 612 has an arc-shaped structure and meshes with the toothed block 611 through the rotation of the roller 3. In this embodiment, the drainage mechanism 6 and the drive mechanism 5 work together to drain the condensate inside the fixed chamber 2 without disrupting the vacuum, eliminating the need for an additional water pump. The drive motor 52, through the reducer 53, drives the gear ring 55 to rotate. Simultaneously, the gear ring 55 rotates, causing the roller 3 to rotate, thus ensuring uniform heating of the sea buckthorn leaves inside the roller 3. The rotation of the roller 3 also drives the rack 612 to rotate, intermittently meshing with the toothed block 611. Driven by the rack 612, the toothed block 611 moves downwards, which in turn drives the piston rod 67 downwards via the connecting block 610. This, in turn, causes the piston tube 62 to move the suction piston 68 downwards, creating a negative pressure in the lower cavity of the piston tube 62. This negative pressure in the lower cavity of the piston tube 62 becomes greater than that in the upper cavity, causing the lifting plug 63 to move downwards, thus connecting the upper and lower cavities of the piston tube 62. The components are interconnected via the lifting plug 63, allowing condensate from the upper cavity of the piston tube 62 to be drawn into the lower cavity. As the roller 3 continues to rotate, when the rack 612 disengages from the tooth block 611, the lifting plug 63 and the suction piston 68 are reset upwards under the action of the second spring 69 and the first spring 64. When the suction piston 68 resets upwards, the connection between the upper and lower cavities of the piston tube 62 is closed, causing the suction piston 68 to push the condensate out through the one-way valve 605 and the control valve 606. This allows for continuous and indirect discharge of condensate from the device while preventing external air from flowing back into the fixed chamber 2, thus disrupting the vacuum inside the fixed chamber 2, reducing the working time of the vacuum pump 11, and lowering energy consumption. By suppressing the airflow velocity of the control valve 606, air damping is formed above the suction piston 68 when it resets upwards, which helps to prevent the suction piston 68 from being impacted for a long time, thus reducing its service life.

[0034] refer to Figure 1 , Figure 10 and Figure 11The heat exchange mechanism 7 includes a guide pipe 71, inside which a return pipe 72 is installed. The return pipe 72 is connected to the outlet end of the condensing mechanism 8. A cavity is provided between the guide pipe 71 and the return pipe 72, and both ends of the cavity between the guide pipe 71 and the return pipe 72 are connected to a return water pipe 78 and a cold water pipe 79, respectively. The return water pipe 78 is connected to the drain end of the condensing mechanism 8, and the cold water pipe 79 is connected to the interior of the heat dissipation chamber 10. A fan 73 is installed at the top of the other end of the return pipe 72. The bottom and top of the fan 73 are equipped with guide shrouds 705. One end of the fan 73 is connected to a connecting pipe 74, and the other end of the connecting pipe 74 is connected to the top of the fixed chamber 2. The fan 73 is a high-temperature resistant fan. Two second guide plates 77 are fixedly installed inside the cavity between the guide pipe 71 and the return pipe 72. The return air pipe 72 has two first guide plates 76 installed inside. Both the first guide plates 76 and the second guide plates 77 have a spiral structure and are made of copper-aluminum composite material. The condensation mechanism 8 includes a condenser tank 81, which is mounted on the heat dissipation chamber 10 by a bracket. The condenser tank 81 has connecting grooves 83 at both ends. One end of the connecting groove 83 of the condenser tank 81 is connected to the water pump inside the heat dissipation chamber 10 through a pipe, and the other end of the connecting groove 83 of the condenser tank 81 is connected to the return water pipe 78. The condensation grooves at both ends of the condenser tank 81 are connected to each other through multiple heat exchange pipes 84, and there are gaps between adjacent heat exchange pipes. One end of the middle cavity of the condenser tank 81 is connected to the inside of the return air pipe 72, and the other end of the middle cavity of the condenser tank 81 is connected to the air inlet pipe 82. In this embodiment, by providing a heat exchange mechanism 7 and a condensation mechanism 8, cooling water inside the heat dissipation chamber 10 is pumped into the heat exchange tubes 84 inside the condensation tank 81 by a water pump, thereby cooling the heat exchange tubes 84. Water vapor inside the fixed chamber 2 rises and is drawn into the air inlet pipe 82, then enters the condensation tank 81. The water vapor comes into contact with the low-temperature heat exchange tubes 84, causing the water in the water vapor to condense. The condensed water is discharged through the bottom of the condensation tank 81 to the drainage mechanism 6. The cooled air is discharged through one end of the condensation tank 81 into the return air pipe 72, thus cooling the interior of the heat exchange tubes 84. The heated cooling water enters the cavity between the guide pipe 71 and the return air pipe 72 through the return water pipe 78, thereby heating the air inside the return air pipe 72. The heated air returns to the fixed chamber 2 under the action of the fan 73. The heat exchange mechanism 7 can recover the heat inside the condensation mechanism 8, so that the dry air returning to the fixed chamber 2 can be preheated, which helps to reduce the energy consumption of heating inside the fixed chamber 2. At the same time, the cooling water in the cavity between the guide pipe 71 and the return air pipe 72 is cooled and then flows back to the heat dissipation chamber 10 through the cold water pipe 79, which helps to reduce the heat dissipation load of the cooling water inside the heat dissipation chamber 10.

[0035] refer to Figure 1 , Figure 8 and Figure 9The filtration mechanism 9 includes a hot air duct 91, which is connected to the top of the fixed chamber 2. The output end of the hot air duct 91 is connected to the inside of the filter cylinder 92. A coarse filter screen 93 is installed inside the filter cylinder 92. One bottom end of the coarse filter screen 93 is connected to the filter cylinder 92 by a set bolt 910. A third spring 94 is fitted around the outside of the coarse filter screen 93. A scraper 95 is installed above the third spring 94. The scraper 95 is in close contact with the outer wall of the coarse filter screen 93. One top end of the scraper 95 is connected to a lifting block 96. The lifting block 96 is fitted around the fine filter screen 98. An electric motor is installed on the top of the filter cylinder 92. The solenoid valve 97 is electrically connected to the remote control terminal; the filter screen 98 has a hollow internal structure, and one end of the filter screen 98 is closed. The outer wall of the filter screen 98 is provided with a vent hole 99, and one edge of the top end of the filter screen 98 is provided with an annular protrusion structure. The bottom of the filter screen 98 is fixedly connected to the connecting pipe 911, and the other end of the connecting pipe 911 is connected to one end of the air inlet pipe 82 of the condenser tank 81. There is a gap between the filter screen 98 and the filter screen 93, and the bottom of the filter cylinder 92 is threadedly connected to a cap 912 for cleaning the inside of the filter cylinder 92. In this embodiment, the filter mechanism 9 can effectively intercept the fuzz on the surface of the sea buckthorn leaves. When the drum 3 tumbles, the dust and fuzz inside the drum 3 enter the filter mechanism 9 along with the airflow. The airflow initially intercepts dust, impurities, and fuzz through the coarse filter screen 93, and then further intercepts smaller dust, impurities, and fuzz through the fine filter screen 98 inside the coarse filter screen 93. The purified air can then be discharged downwards through the fine filter screen 98 into the connecting pipe 911, and through the connecting pipe 911 and the air inlet pipe 82 into the condenser tank 81. This helps prevent dust, impurities, and fuzz from accumulating in the condenser tank 81 and adhering to the surface of the heat exchange tube 84. When the sea buckthorn leaves inside the drum 3 are dried, the solenoid valve 97 is opened to allow external air to circulate. Under pressure, the lifting block 96 is instantly squeezed downwards, which in turn causes the scraper 95 to move downwards, allowing it to clean impurities from the outer surface of the coarse filter screen 93. As the lifting block 96 continues to move downwards, the vent 99 is exposed from the top of the lifting block 96, allowing external air to enter the fine filter screen 98 through the vent 99 and backwash outwards, thus cleaning impurities from the surface grooves of the fine filter screen 98. This facilitates cleaning of the filter mechanism 9. The external pressure-driven cleaning mechanism eliminates the need for additional power, improving maintenance convenience. By rotating the cap 912, the bottom of the filter cylinder 92 is exposed, making it easy to periodically clean the dust and impurities accumulated inside the filter cylinder 92.

[0036] Working principle: First, open the quick-opening cover at the front of the roller 3, put all the selected wild sea buckthorn leaves in, and lock the sealing cover 4 again. All valves will automatically reset, and the system will form a closed space that is only connected to the vacuum pump 11 and the condensation channel. The vacuum pump 11 starts and continuously extracts the air from the fixed chamber 2. The air pressure in the chamber drops, the boiling point of water decreases, and the moisture in the leaves vaporizes in advance. The electric heating rod 12 only needs to output low heat to maintain a mild chamber temperature, avoiding high-temperature browning and nutrient loss.

[0037] Afterwards, the drum 3 rotates slowly under the drive of the motor and gears. The guide ribs on the drum wall bring the blades to a high position and then evenly spray them. The blade layer is constantly changing position and loosening, and the hot and humid steam is evenly carried out. The fan 73 provides circulation power and introduces the humid air into the dual-stage filter cartridge 92. The coarse mesh intercepts the fuzz on the blade stalk, and the fine mesh traps the dust. The clean hot and humid air enters the middle cavity of the condenser tank 81. Cooling water from the heat dissipation chamber 10 flows through the dense heat exchange tubes 84 inside the tank. When the hot and humid air passes back through the outside of the tubes, it cools down rapidly. A large amount of water vapor condenses into water droplets and drips down the tube wall to the bottom. The latent heat released is absorbed by the cooling water inside the tubes. The heated cooling water leaves the condenser tank 81 and enters the jacket of the heat exchange mechanism 7. It exchanges heat with the dry air that is about to return to the chamber in the opposite direction and returns the residual heat to the air itself. The cooled water flows back to the heat dissipation chamber 10 and is cooled down again by the external air cooling, forming a self-circulation of cooling water.

[0038] At this time, the temperature of the dry air that has had its moisture removed rises slightly under the traction of the fan 73. It then absorbs heat further by extending its path through the guide plate, becoming hot dry air with a higher temperature and lower relative humidity. It then re-enters the drum 3 from the top of the fixed chamber 2 to continue to remove moisture. The entire hot air circuit does not directly exchange with the outside atmosphere, which prevents the aroma from escaping and reduces energy consumption. The condensate collected at the bottom of the condenser tank 81 is discharged periodically by the rotation of the drum 3: the arc-shaped toothed rack 612 on the outer wall of the drum 3 engages with the lower toothed block 611 once for each revolution, driving the piston rod 67 to move downward. A momentary negative pressure is formed in the piston cylinder, drawing the condensate from the upper chamber to the lower chamber. After the rack 612 leaves, the spring returns to its original position, the piston moves in the opposite direction, the outlet check valve 605 opens, and the water is forced into the external drain pipe 61. The entire process does not require an additional water pump and does not disrupt the vacuum.

[0039] Finally, the online humidity probe detects that the humidity of the circulating airflow is consistently below the set lower limit, and the system determines that drying is complete. First, the heating is turned off, and then the vacuum is slowly broken down to normal pressure. The control center opens the top solenoid valve 97 at regular intervals, allowing outside air to enter instantly. The air pressure inside the filter cylinder 92 suddenly increases, pushing the lifting block 96 and the scraper 95 downward together. The scraper 95 sweeps off the impurities on the surface of the coarse mesh, while the airflow passes through the fine mesh in the opposite direction, blowing out the dust embedded in the holes. The accumulated impurities fall to the bottom of the cylinder, achieving both vacuum breaking down to normal pressure and self-cleaning without power. The cover is opened, and the drum rotates in three points to unload the dried leaves. The resulting sea buckthorn leaves are green in color, have complete leaf shape, and uniform moisture content. The entire process does not require manual turning, does not emit high-temperature exhaust gas, and the cooling water and waste heat are all circulated internally, making it energy-saving, environmentally friendly, and highly efficient.

[0040] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-efficiency roasting and drying machine for wild sea buckthorn leaves, characterized in that, The system includes a base (1), a fixed chamber (2) on top of the base (1), the fixed chamber (2) and the base (1) being fixedly connected, a roller (3) inside the fixed chamber (2), a removable sealing cover (4) at one end of the roller (3) for feeding materials, a driving mechanism (5) on the surface of the base (1) for driving the roller (3) to rotate, sea buckthorn leaves inside the roller (3), and rollers (13) on both sides of the roller (3) supported by rollers (13), the rollers (13) being bolted to the surface of the base (1), an electric heating rod (12) installed on the inner wall of the fixed chamber (2) for heating the inside of the fixed chamber (2), a heat exchange mechanism (7) on the top of one end of the fixed chamber (2), one end of the heat exchange mechanism (7) communicating with the inside of the fixed chamber (2), and the other end of the heat exchange mechanism (7) communicating with the cold air supply. The condensing mechanism (8) is connected, and the heat exchange mechanism (7) is used to recover the waste heat inside the condensing mechanism (8). The other end of the condensing mechanism (8) is connected to the filter mechanism (9). The condensing mechanism (8) is used to condense water vapor inside the fixed chamber (2). The other end of the filter mechanism (9) is connected to the inside of the fixed chamber (2). The filter mechanism (9) is used to filter the air at the input end of the condensing mechanism (8). A heat dissipation chamber (10) is provided below the condensing mechanism (8). The heat dissipation chamber (10) is filled with cooling water and has a built-in water pump. The output end of the water pump inside the heat dissipation chamber (10) is connected to the input end inside the condensing mechanism (8) for cooling the inside of the condensing mechanism (8). A vacuum pump (11) is installed on the top of the heat dissipation chamber (10). One end of the vacuum pump (11) is connected to the inside of the fixed chamber (2).

2. The high-efficiency roasting and drying machine for wild sea buckthorn leaves according to claim 1, characterized in that, The drive mechanism (5) includes a motor base (51), which is connected to the base (1) by bolts. A drive motor (52) is mounted on the top of the motor base (51) by bolts. The output end of the drive motor (52) is connected to the reducer (53) for transmission. The output end of the reducer (53) is connected to the transmission gear (54) by key. The transmission gear (54) meshes with the gear ring (55). The gear ring (55) is mounted on the outside of the roller (3) by bolts. The surface of the roller (3) is provided with an annular groove for limiting the front and rear movement of the roller (3). The groove on the surface of the roller (3) is rotatably connected to the fixed chamber (2) by an oil seal bearing.

3. The high-efficiency roasting and drying machine for wild sea buckthorn leaves according to claim 1, characterized in that, The drainage mechanism (6) includes a drainage component and a pressure component. The drainage component is connected to the condensation mechanism (8). The drainage component is used to drain the condensate inside the condensation mechanism (8). The drainage end of the drainage component is connected to an external water pipe. The pressure component is located in the drainage component. The pressure component cooperates with the roller (3) to drain the water stored inside the drainage component.

4. The high-efficiency roasting and drying machine for wild sea buckthorn leaves according to claim 3, characterized in that, The drainage assembly includes a drain pipe (61), one bottom end of which is connected to the inner cavity of the top end of the piston pipe (62). The piston pipe (62) is divided into two cavities, and the two cavities are connected by a circular hole. A lifting plug (63) is slidably connected inside the circular hole between the two cavities. The lifting plug (63) has annular protrusions on its top and bottom edges. The lifting plug (63) has a hollow structure inside and a closed structure at its bottom. A first spring (64) is fitted on the outside of the lifting plug (63). The outer wall of the lifting plug (63) has annular grooves distributed at equal intervals. One side of the lower cavity of the piston pipe (62) is connected to a one-way valve (65). A control valve (66) is installed at the output end of the one-way valve (65).

5. The high-efficiency roasting and drying machine for wild sea buckthorn leaves according to claim 3, characterized in that, The pressure assembly includes a piston rod (67), the outer wall of which slides in contact with the bottom end of the piston tube (62), and a suction piston (68) is fitted at the top end of the piston rod (67). The outer wall of the suction piston (68) is tightly fitted with the inner wall of the lower end of the piston tube (62). A second spring (69) is fitted on the outside of the piston rod (67). A connecting block (610) is fixedly installed at the bottom end of the piston rod (67), and a strip-shaped protruding structure is provided on the outside of the piston rod (67) for limiting the rotation of the piston rod (67). A toothed block (611) is installed on one side of the connecting block (610) by screws. A rack (612) is installed on the outer wall of the roller (3) by bolts. The rack (612) has an arc-shaped structure and meshes with the toothed block (611) through the rotational engagement of the roller (3).

6. The high-efficiency roasting and drying machine for wild sea buckthorn leaves according to claim 1, characterized in that, The heat exchange mechanism (7) includes a guide pipe (71), inside which a return pipe (72) is provided. The return pipe (72) is connected to the outlet end of the condensing mechanism (8). A cavity is provided between the guide pipe (71) and the return pipe (72). Both ends of the cavity between the guide pipe (71) and the return pipe (72) are connected to the return water pipe (78) and the cold water pipe (79), respectively. The return water pipe (78) is connected to the drain end of the condensing mechanism (8). The cold water pipe (79) is connected to the interior of the heat dissipation chamber (10). A fan (73) is provided at the top of the other end of the return pipe (72). A guide shroud (705) is installed at both the bottom and top of the fan (73). One end of the fan (73) is connected to the connecting pipe (74). The other end of the connecting pipe (74) is connected to the top of the fixed chamber (2). The fan (73) is a high-temperature resistant fan (73).

7. The high-efficiency roasting and drying machine for wild sea buckthorn leaves according to claim 6, characterized in that, Two second guide plates (77) are fixedly installed inside the cavity between the guide pipe (71) and the return pipe (72). Two first guide plates (76) are installed inside the return pipe (72). The first guide plate (76) and the second guide plate (77) are both spiral structures. The first guide plate (76) and the second guide plate (77) are made of copper-aluminum composite material.

8. The high-efficiency roasting and drying machine for wild sea buckthorn leaves according to claim 1, characterized in that, The condensation mechanism (8) includes a condensation tank (81), which is mounted on top of the heat dissipation chamber (10) by a bracket. The condensation tank (81) has connecting grooves (83) at both ends. One end of the connecting groove (83) of the condensation tank (81) is connected to the water pump inside the heat dissipation chamber (10) through a pipe. The other end of the connecting groove (83) of the condensation tank (81) is connected to the return water pipe (78). The condensation grooves at both ends of the condensation tank (81) are connected to each other through multiple heat exchange pipes (84), and there are gaps between adjacent heat exchange pipes. One end of the middle cavity of the condensation tank (81) is connected to the inside of the return air pipe (72), and the other end of the middle cavity of the condensation tank (81) is connected to the air inlet pipe (82).

9. A high-efficiency roasting and drying machine for wild sea buckthorn leaves according to claim 1, characterized in that, The filtration mechanism (9) includes a hot air pipe (91), which is connected to the top of the fixed chamber (2). The output end of the hot air pipe (91) is connected to the inside of the filter cylinder (92). A coarse filter screen (93) is provided inside the filter cylinder (92). One bottom end of the coarse filter screen (93) is connected to the filter cylinder (92) by a set bolt (910). A third spring (94) is fitted on the outside of the coarse filter screen (93). A scraper (95) is provided above the third spring (94). The scraper (95) is tightly fitted to the outer wall of the coarse filter screen (93). One top end of the scraper (95) is connected to a lifting block (96). The lifting block (96) is fitted on the outside of the fine filter screen (98). A solenoid valve (97) is installed on the top of the filter cylinder (92). The solenoid valve (97) is electrically connected to a remote control terminal.

10. A high-efficiency roasting and drying machine for wild sea buckthorn leaves according to claim 9, characterized in that, The filter mesh (98) has a hollow internal structure, and one end of the filter mesh (98) is closed. The outer wall of the filter mesh (98) is provided with ventilation holes (99), and one edge of the top end of the filter mesh (98) is provided with an annular protruding structure. The bottom of the filter mesh (98) is fixedly connected to the connecting pipe (911), and the other end of the connecting pipe (911) is connected to one end of the air inlet pipe (82) of the condenser tank (81). There is a gap between the filter mesh (98) and the filter coarse mesh (93), and the bottom of the filter cylinder (92) is threaded with a cap (912) for cleaning the inside of the filter cylinder (92).

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