An oil-tea camellia seed drying device

Abstract

The present invention relates to the technical field of drying equipment, and particularly relates to an oil-tea camellia seed drying device, which comprises a sealed container. A drying barrel is slidably connected inside the sealed container. A humidity detection assembly is arranged between the drying barrel and the sealed container. A stirring assembly penetrating through the drying barrel is rotatably connected inside the sealed container. A negative pressure assembly is installed at a position near the top of the side wall of the sealed container. A driving assembly is installed on the sealed container and is in transmission connection with both the stirring assembly and the negative pressure assembly. A hot air circulation assembly communicated with the stirring assembly is installed on the sealed container. A feeding assembly corresponding to the top of the drying barrel is installed on the sealed container. The bottom of the drying barrel is fixedly connected with a discharging assembly penetrating through the sealed container. Through the mutual cooperation of the stirring assembly, the negative pressure assembly and the hot air circulation assembly, the problems of uneven drying, low efficiency, high energy consumption and easy reduction of the quality of oil-tea camellia seeds during the drying process can be effectively solved in this application.

Description

Technical Field

[0001] The present invention relates to the technical field of drying equipment, and particularly relates to an oil-tea camellia seed drying device. Background Art

[0002] Before oil-tea camellia seeds are pressed for oil, they need to be dried to reduce their water content, facilitating subsequent storage and processing. Traditional drying methods include natural sun drying, hot air drying, etc. Natural sun drying utilizes the heat of solar radiation and natural ventilation to naturally evaporate the water in the oil-tea camellia seeds. Hot air drying utilizes electric heaters, steam radiators, etc. to generate heat to increase the temperature, and at the same time uses ventilation equipment to promote the circulation of hot air to evaporate the water in the oil-tea camellia seeds.

[0003] The drying effect of natural sun drying is not only restricted by weather conditions, but also requires long-term sun drying. At the same time, it is difficult to control the uniformity of sun drying. Hot air drying not only requires continuous heat supply to maintain the circulation of hot air, consuming a large amount of energy; but also it is difficult to uniformly and effectively control the temperature and humidity during the heating process. Too high a temperature is likely to cause the loss of nutrients in the oil-tea camellia seeds, and too low a temperature will reduce the drying efficiency.

[0004] Therefore, how to achieve efficient, uniform, low-energy-consuming drying of oil-tea camellia seeds while ensuring quality is an urgent problem for those skilled in the art to solve. Summary of the Invention

[0005] In order to solve the problems of uneven drying, low efficiency, high energy consumption, and easy degradation of the quality of oil-tea camellia seeds during the drying process, the present application provides an oil-tea camellia seed drying device.

[0006] The oil-tea camellia seed drying device provided by the present application adopts the following technical solutions:

[0007] An oil-tea camellia seed drying device includes a sealed container. A drying barrel is slidably connected inside the sealed container. A humidity detection component is arranged between the drying barrel and the sealed container. A stirring component passing through the drying barrel is rotatably connected inside the sealed container. A negative pressure component is installed at a position near the top of the side wall of the sealed container. A driving component is installed on the sealed container and is in transmission connection with both the stirring component and the negative pressure component. A hot air circulation component communicating with the stirring component is installed on the sealed container. A feeding component corresponding to the top of the drying barrel is installed on the sealed container. The bottom of the drying barrel is fixedly connected with a discharging component passing through the sealed container.

[0008] Furthermore, the humidity detection component includes a first fixed ring fixedly connected to the inside of the sealed container, a plurality of pressure sensors evenly distributed in a ring are fixedly mounted on the first fixed ring, a second fixed ring is fixedly connected to the top of the drying barrel corresponding to the first fixed ring, the second fixed ring is mounted on the pressure sensor, a plurality of limit rods evenly distributed in a ring are connected to the first fixed ring, the limit rod can slide through the second fixed ring, a spring is mounted on the limit rod, and the spring abuts between the first fixed ring and the second fixed ring.

[0009] Furthermore, the stirring assembly includes a vertically arranged central axis, which can movably pass through the drying barrel, the bottom of the central axis is rotatably connected to the bottom of the sealed container, the top of the central axis is rotatably connected to the top of the sealed container, the outer side of the central axis is fixedly connected with a spirally arranged stirring blade at a position corresponding to the inside of the drying barrel, the stirring blade is fixedly connected with a plurality of stirring rods radially arranged along the drying barrel, and the outer side of the central axis is transmission-connected to the driving assembly at a position close to the top of the sealed container.

[0010] Furthermore, the negative pressure assembly includes an eccentric disk rotatably connected to the top of the sealed container, the eccentric disk is transmission-connected to the drive assembly, a connecting rod is hingedly connected to the eccentric disk, a piston cylinder penetrating the side wall of the sealed container is fixedly and sealingly connected, a piston body is sealingly and slidingly connected inside the piston cylinder, the piston body is hingedly connected to the connecting rod, a one-way valve is fixedly and sealingly connected to one end of the piston cylinder located outside the sealed container, and an exhaust groove is provided on the outer side surface of the piston cylinder close to the inside of the sealed container.

[0011] Furthermore, the interior of the sealed container is fixedly and sealedly connected with an annular receiving plate, and the receiving plate is fixedly connected to the outside of the piston cylinder at a position flush with the bottom of the exhaust groove.

[0012] Furthermore, the driving assembly includes a driving motor, which is fixedly mounted on the outside of the sealed container. The sealed container is sealed and rotatably connected to a transmission shaft, one end of the transmission shaft located outside the sealed container is transmission-connected to the driving motor, and one end of the transmission shaft located inside the sealed container is fixedly mounted with a driving gear. A first driven gear is fixedly mounted on the stirring assembly inside the sealed container, and a second driven gear is fixedly mounted on the negative pressure assembly inside the sealed container. The first driven gear is meshed with the driving gear, and the second driven gear is meshed with the first driven gear.

[0013] Further, the hot air circulation component includes a hot air flow fan, which is fixedly installed on the top of the sealed container. The air inlet end and the air outlet end of the hot air flow fan are both fixedly and hermetically installed with air guide covers. A ventilation pipe is hermetically connected to the air guide cover near the air inlet end of the hot air flow fan. An electronically controlled negative pressure relief valve is installed on the ventilation pipe. The end of the ventilation pipe away from the hot air flow fan is fixedly and hermetically connected to a position near the middle of the outside of the sealed container. An installation seat is hermetically connected to the air guide cover near the air outlet end of the hot air flow fan. The installation seat is fixedly and hermetically installed on the top of the sealed container corresponding to the central axis. A ventilation hole communicating with the installation seat is opened in the center of the central axis. A plurality of uniformly distributed blowing holes are opened on the outer side of the stirring rod. The blowing holes communicate with the ventilation holes. A plurality of uniformly distributed ventilation holes are opened on the side wall of the drying barrel.

[0014] Further, the feeding component includes a feeding hopper, which is fixedly and hermetically installed on the sealed container. The lower end of the feeding hopper penetrates through the top of the sealed container. A first sealing cover is rotatably connected to the upper end of the feeding hopper.

[0015] Further, the discharging component includes a discharging pipe, which is fixedly connected to the bottom of the drying barrel. The outer side of the discharging pipe hermetically penetrates through the bottom of the sealed container slidably. A second sealing cover is detachably connected to the outer end of the discharging pipe.

[0016] Further, a drain valve is fixedly and hermetically connected to the bottom of the sealed container.

[0017] The beneficial effects achieved are:

[0018] In this application, the driving component can simultaneously drive the stirring component and the negative pressure component, and the hot air circulation component can convey hot air into the drying barrel during the operation of the stirring component. This enables the camellia seeds to come into full and uniform contact with the hot air, ensuring that every camellia seed is affected by the hot air, making the drying more uniform and efficient. At the same time, the negative pressure environment formed by the negative pressure component can not only cause the moisture in the camellia seeds to reach the boiling point and start to evaporate in a shorter time at a relatively low temperature, thus accelerating the overall drying process and improving the drying efficiency. Moreover, the relatively low drying temperature can reduce the heat required for drying, thereby reducing the consumption of energy such as electric energy and heat energy, saving the drying cost, and improving the economic benefits. Meanwhile, drying at a relatively low temperature avoids excessive damage to the nutritional components of the camellia seeds due to long-term drying at high temperatures, better preserves the original quality and nutritional value of the camellia seeds, and is conducive to improving the quality of the subsequent extracted camellia oil. In addition, during the continuous extraction of air from the sealed container by the negative pressure component, it can also timely extract the hot air containing a large amount of water vapor, promoting the continuous and efficient progress of the drying process, improving the drying efficiency, and also being beneficial to reducing the water content of the dried camellia seeds. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of an embodiment of this application.

[0020] Figure 2 is a schematic exploded view of the structure of an embodiment of this application.

[0021] Figure 3 is a schematic diagram of the internal structure in the first direction of an embodiment of this application.

[0022] Figure 4 is a schematic diagram of the internal structure in the second direction of an embodiment of this application.

[0023] Figure 5 is a schematic exploded view of the installation structure of the humidity detection component in an embodiment of this application.

[0024] Figure 6 is a three-dimensional structure diagram of the stirring component in an embodiment of this application.

[0025] Figure 7 is a schematic exploded view of the installation structure of the negative pressure component in an embodiment of this application.

[0026] Figure 8 is a schematic diagram of the installation structure of the driving component in an embodiment of this application.

[0027] Figure 9 is a schematic exploded view of the installation structure of the hot air circulation component in an embodiment of this application.

[0028] Description of reference numerals: 100, sealed container; 101, frame; 102, outer cylinder; 103, top cover plate; 200, drying barrel; 201, drain valve; 300, humidity detection assembly; 301, first fixing ring; 302, pressure sensor; 303, second fixing ring; 304, limit rod; 305, spring; 400, stirring assembly; 401, central axis; 402, stirring blade; 403, stirring rod; 500, negative pressure assembly; 501, eccentric disk; 502, connecting rod; 503, piston cylinder; 504, piston body; 505, one-way valve; 506, exhaust groove; 507, lead plate; 6 00, driving assembly; 601, driving motor; 602, transmission shaft; 603, driving gear; 604, first driven gear; 605, second driven gear; 606, first bevel gear; 607, second bevel gear; 700, hot air circulation assembly; 701, hot flow fan; 702, air guide cover; 703, ventilation pipe; 704, electric negative pressure relief valve; 705, mounting seat; 706, air guide hole; 707, blowing hole; 708, ventilation hole; 800, feeding assembly; 801, feeding hopper; 802, first sealing cover; 900, discharging assembly; 901, discharging pipe; 902, second sealing cover. DETAILED DESCRIPTION

[0029] The following is combined with Figures 1-9 This application is described in further detail.

[0030] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0031] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] The embodiment of the present application discloses a camellia seed drying device.

[0033] Please refer toFigures 1 to 9 , in an embodiment of the present application, an oil-tea camellia seed drying device includes a sealed container 100. A drying barrel 200 is slidably connected inside the sealed container 100. A humidity detection component 300 is provided between the drying barrel 200 and the sealed container 100. A stirring component 400 penetrating the drying barrel 200 is rotatably connected inside the sealed container 100. A negative pressure component 500 is installed at a position near the top of the side wall of the sealed container 100. A driving component 600 is installed on the sealed container 100 and is in transmission connection with both the stirring component 400 and the negative pressure component 500. A hot air circulation component 700 communicating with the stirring component 400 is installed on the sealed container 100. A feeding component 800 corresponding to the top of the drying barrel 200 is installed on the sealed container 100. The bottom of the drying barrel 200 is fixedly connected to a discharging component 900 penetrating the sealed container 100.

[0034] The implementation principle of an oil-tea camellia seed drying device in an embodiment of the present application is as follows:

[0035] First, the oil-tea camellia seeds to be dried are conveyed into the drying barrel 200 through the feeding component 800 and sealed. The humidity detection component 300 provided between the drying barrel 200 and the sealed container 100 will monitor the humidity in the drying environment in real time. Then, the driving component 600 and the hot air circulation component 700 are started.

[0036] The driving component 600 will drive the stirring component 400 to rotate in the drying barrel 200 and turn and stir the oil-tea camellia seeds. The hot air circulation component 700 will simultaneously convey hot air into the drying barrel 200 during the operation of the stirring component 400. So that the oil-tea camellia seeds can be fully and evenly contacted with the hot air, ensuring that each oil-tea camellia seed can be affected by the hot air, making the drying more uniform and efficient.

[0037] At the same time, the negative pressure component 500 installed at a position near the top of the side wall of the sealed container 100 will also start to work under the transmission connection of the driving component 600, continuously extracting air from the sealed container 100, so that a certain negative pressure environment is formed inside the sealed container 100 and the drying barrel 200.

[0038] Under the negative pressure environment, the boiling point of water will decrease. After the boiling point of water decreases, the water in the oil-tea camellia seeds can be quickly vaporized into water vapor in a boiling manner at a lower temperature. The water in the oil-tea camellia seeds can reach the boiling point and start to evaporate in large quantities in a shorter time, thereby accelerating the overall drying process, improving the drying efficiency, and being able to reduce the water content of the oil-tea camellia seeds to the ideal level faster. It is especially suitable for large-scale oil-tea camellia seed drying production and helps to improve production efficiency.

[0039] Meanwhile, the relatively low drying temperature means a relatively reduced heat supply requirement, thereby reducing energy consumption such as electric energy and thermal energy, saving drying costs, improving economic efficiency, and also meeting the production requirements of energy conservation and emission reduction.

[0040] Camellia seeds contain various nutrients such as unsaturated fatty acids, tea polyphenols, camellia glycosides, and squalene. These nutrients are easily damaged or oxidized and decomposed at high temperatures. Drying at a relatively low temperature avoids excessive damage to the nutrients in camellia seeds due to long-term high-temperature drying, better preserves the original quality and nutritional value of camellia seeds, and is beneficial to improving the quality of the subsequently extracted camellia oil.

[0041] During the process of continuously extracting air from the sealed container 100, the negative pressure component 500 can also timely extract the hot air containing a large amount of water vapor, promoting the continuous and efficient progress of the drying process, improving the drying efficiency, and also being beneficial to reducing the water content of the dried camellia seeds.

[0042] When the humidity detection component 300 detects that the humidity in the drying barrel 200 reaches the preset qualified drying standard, it controls the driving component 600 to stop working, and the hot air circulation component 700 and the negative pressure component 500 also stop running accordingly. Then, the dried camellia seeds are output from the bottom of the drying barrel 200 through the discharging component 900, and the drying operation of the camellia seeds is completed.

[0043] In summary, in this application, by setting the stirring component 400, the negative pressure component 500, and the hot air circulation component 700 in the sealed container 100 and the drying barrel 200, and using the mutual cooperation of the stirring component 400, the negative pressure component 500, and the hot air circulation component 700, the problems of uneven drying, low efficiency, high energy consumption, and easy degradation of the quality of camellia seeds during the drying process can be effectively solved.

[0044] Please also refer to Figures 1 to 9 In an embodiment of this application, the sealed container 100 includes a frame 101, an outer cylinder 102 is detachably and fixedly connected to the frame 101, a top cover plate 103 is detachably and sealingly connected to the top of the outer cylinder 102, the feeding component 800 is fixedly and sealingly installed on the top cover plate 103, and the discharging component 900 is slidably and sealingly installed at the bottom of the outer cylinder 102.

[0045] During the working process, the frame 101 serves as the support structure of the entire sealed container 100, providing a stable foundation for the installation of subsequent components. The outer cylinder 102 is fixed to the frame 101 in a detachable manner. This detachable connection (such as bolt connection, slot connection, etc.) facilitates the installation, maintenance, and repair of the equipment, and can be quickly disassembled when it is necessary to clean the inside of the cylinder or replace parts. The top cover plate 103 is also installed on the top of the outer cylinder 102 in a detachable sealed connection manner (such as rubber sealing ring combined with snap fasteners or bolts) to ensure the sealing performance of the sealed container 100 during the drying process, preventing heat dissipation and entry of external impurities. The detachable connection methods between the frame 101, the outer cylinder 102, and the top cover plate 103 greatly facilitate the initial assembly, subsequent maintenance, and regular cleaning of the equipment.

[0046] Please refer to Figures 1 to 9 , in an embodiment of the present application, a drain valve 201 is fixedly and sealingly connected to the bottom of the sealed container 100.

[0047] During the drying process of camellia seeds, as hot air heats the camellia seeds, the moisture in the camellia seeds will continuously evaporate. Even if the negative pressure component continuously extracts the air containing water vapor, there may still be some water vapor that condenses into liquid water at the bottom or inner wall of the sealed container 100 when it meets cold. The drain valve 201 is fixedly and sealingly connected to the bottom of the sealed container 100. When the condensed water accumulates to a certain extent, after the negative pressure is released after the camellia seeds are dried, and then the drain valve 201 is opened, the liquid water will be discharged to the designated drainage area outside through the drain valve 201, thus avoiding the long-term retention of water accumulation in the sealed container 100, which may affect the normal operation and drying effect of the drying equipment, etc. When the drain valve 201 is in the closed state, it can prevent external air, impurities, etc. from entering the sealed container 100 through the drain port, maintaining a relatively stable drying environment inside the sealed container 100.

[0048] Please refer to Figures 1 to 9 , in an embodiment of the present application, the humidity detection component 300 includes a first fixing ring 301 fixedly connected to the inside of the sealed container 100 by welding. Three pressure sensors 302 evenly distributed in a ring are fixedly installed on the first fixing ring 301. A second fixing ring 303 is fixedly connected to the top of the drying barrel 200 corresponding to the first fixing ring 301 by welding. The second fixing ring 303 is placed on the pressure sensors 302. Three limiting rods 304 are evenly distributed in a ring on the first fixing ring 301. The limiting rods 304 slidably penetrate through the second fixing ring 303, and springs 305 are sleeved on the limiting rods 304. The springs 305 abut between the first fixing ring 301 and the second fixing ring 303.

[0049] During the working process, the first fixing ring 301 is firmly fixed and connected inside the sealed container 100. Three annularly evenly distributed pressure sensors 302 are installed on the first fixing ring 301, forming a basic structure capable of sensing pressure changes. The second fixing ring 303 corresponding to the top of the drying barrel 200 is placed on these pressure sensors 302, so that the weight of the drying barrel 200 and the weight of oil-tea camellia seeds and the like inside it will be transmitted to the pressure sensors 302 through the second fixing ring 303.

[0050] Three limiting rods 304 annularly evenly distributed on the first fixing ring 301 slidably penetrate through the second fixing ring 303, which plays a role in limiting the second fixing ring 303, ensuring that its movement in the up and down directions is along the trajectory defined by the limiting rods 304, and guaranteeing the stability of the structure. At the same time, the spring 305 sleeved on the limiting rod 304 abuts between the first fixing ring 301 and the second fixing ring 303, and the spring 305 provides an elastic supporting force. When the weight of the oil-tea camellia seeds in the drying barrel 200 changes (for example, during the drying process, as the moisture continuously evaporates, the total weight of the oil-tea camellia seeds gradually decreases), the second fixing ring 303 will produce a corresponding displacement change on the pressure sensor 302. When the weight decreases, the spring 305 will push the second fixing ring 303 to move upward; conversely, if there is an additional force (such as adding oil-tea camellia seeds, etc.), the second fixing ring 303 will compress the spring 305 downward and move.

[0051] During the drying process, the evaporation of moisture in the oil-tea camellia seeds will cause the total weight of the drying barrel 200 and the internal materials to gradually decrease. This weight change will cause a change in the pressure of the second fixing ring 303 on the pressure sensor 302. The pressure sensor 302 can convert the sensed pressure change into an electrical signal and then transmit it to the connected control system, such as the controller or control circuit in the device. The control system can, according to the received pressure signal change situation, combined with the pre-set conversion relationship, that is, the association established based on data such as the initial weight of the oil-tea camellia seeds and the weight ranges corresponding to different moisture contents, calculate the moisture content change situation of the oil-tea camellia seeds during the drying process, and then judge the drying progress and whether the predetermined drying requirements are met.

[0052] This design cleverly utilizes the characteristic that the weight of the oil-tea camellia seeds changes with the evaporation of moisture during the drying process, and indirectly reflects the humidity situation by detecting the weight change of the drying barrel 200. There is no need to directly set up complex humidity sensors inside the drying barrel 200 to contact the oil-tea camellia seeds and the hot air environment, avoiding the problems that the sensors may malfunction or affect the measurement accuracy due to harsh environments such as high temperature and humidity, improving the reliability and stability of the detection, and the structure is relatively simple, easy to implement and maintain.

[0053] The combined use of the limit rod 304 and the spring 305 not only ensures the stability of the second fixing ring 303 during the up and down movement, enabling the pressure to be accurately transmitted to the pressure sensor 302, but also, through the elastic buffering of the spring 305, avoids the pressure sensor 302 being damaged by sudden and excessive forces caused by possible external interference factors such as slight vibrations and impacts. This helps to ensure that the pressure sensor 302 accurately measures the pressure change over a long period, thereby improving the accuracy of humidity detection and providing strong data support for precisely controlling the drying process.

[0054] The arrangement of three annularly evenly distributed pressure sensors 302 enables the pressure transmitted by the second fixing ring 303 to be jointly shared and sensed by the three pressure sensors 302, ensuring the uniformity of the force and avoiding the situation where some sensors are overloaded or the measurement is inaccurate due to uneven local force. In this way, the weight change of the drying barrel 200 can be comprehensively sensed from three angles, more accurately reflecting the overall humidity change, which is beneficial for more precisely judging the drying degree and ensuring that the oil-tea seeds are dried to an ideal effect.

[0055] Please refer to Figures 1 to 9 In an embodiment of the present application, the stirring assembly 400 includes a vertically arranged central shaft 401. The central shaft 401 is movably passed through the drying barrel 200. The bottom of the central shaft 401 is rotatably connected to the bottom of the sealed container 100, and the top of the central shaft 401 is rotatably connected to the top of the sealed container 100. A helically arranged stirring blade 402 is fixedly connected to the outer side of the central shaft 401 corresponding to the position inside the drying barrel 200. A plurality of stirring rods 403 arranged radially along the drying barrel 200 are fixedly connected to the stirring blade 402. The outer side of the central shaft 401 near the top of the sealed container 100 is in transmission connection with the driving assembly 600.

[0056] During the working process, the driving assembly 600, as the power source, transmits the power to the position of the central shaft 401 near the top of the sealed container 100, enabling the central shaft 401 to rotate around its own vertical axis. The bottom of the central shaft 401 is rotatably connected to the bottom of the sealed container 100, and the top is rotatably connected to the top of the sealed container 100. Such a structural design provides a stable rotational support for the central shaft 401, ensuring that it can maintain good coaxiality during rotation and smoothly perform rotational motion.

[0057] When the central axis 401 rotates, the spirally arranged stirring blade 402 fixedly connected to its outer side and located inside the drying barrel 200 also rotates synchronously. The rotation of the spiral stirring blade 402 will produce an upward and downward pushing effect on the oil tea seeds in the drying barrel 200, causing the oil tea seeds to form an up and down flipping motion state in the drying barrel 200, so that the oil tea seeds can be fully mixed and moved in the vertical direction, and the oil tea seeds are prevented from accumulating at the bottom of the barrel or in a local area. At the same time, a number of stirring rods 403 fixedly connected to the stirring blade 402 and arranged radially along the drying barrel 200 also rotate together, and the stirring rods 403 will stir and stir the oil tea seeds in the horizontal direction, further breaking the possible agglomeration state of the oil tea seeds, so that the oil tea seeds can also be evenly dispersed in the horizontal direction.

[0058] During the process of hot air circulation component 700 conveying hot air into drying barrel 200 for drying, the all-round stirring action of stirring component 400 enables the oil tea seeds to be fully and evenly contacted with the hot air. The hot air can reach the surface of each oil tea seed, more efficiently absorb the moisture in the oil tea seed and take it out, thereby improving the drying effect and efficiency, ensuring that all parts of the oil tea seeds can be dried evenly, and avoiding the situation where some parts are not dried fully or are over-dried.

[0059] This design achieves all-round mixing and stirring of the tea seeds in the drying barrel 200 through the up and down flipping action of the spiral stirring blade 402 and the horizontal shifting action of the stirring rod 403, ensuring that each tea seed can fully contact with the hot air, greatly improving the uniformity of drying.

[0060] Please refer to Figures 1 to 9 In one embodiment of the present application, the negative pressure assembly 500 includes an eccentric disk 501 rotatably connected to the top of the sealed container 100, the eccentric disk 501 is transmission-connected to the driving assembly 600, a connecting rod 502 is hingedly connected to the eccentric disk 501, a piston cylinder 503 penetrating the side wall of the sealed container 100 is fixedly and sealedly connected, a piston body 504 is sealingly and slidingly connected inside the piston cylinder 503, the piston body 504 is hingedly connected to the connecting rod 502, a one-way valve 505 is fixedly and sealedly connected to one end of the piston cylinder 503 located outside the sealed container 100, and an exhaust groove 506 is provided on the outer side of the piston cylinder 503 close to the inside of the sealed container 100.

[0061] During operation, the driving assembly 600, as the power source of the entire device, transmits power to the eccentric disk 501, causing the eccentric disk 501 to rotate around its rotation center. Since the eccentric disk 501 and the connecting rod 502 are hingedly connected, the rotation of the eccentric disk 501 drives the connecting rod 502 to swing back and forth. The other end of the connecting rod 502 is hingedly connected to the piston body 504 in the piston cylinder 503, so the reciprocating swing of the connecting rod 502 drives the piston body 504 to slide back and forth in a sealed manner along the cylinder wall inside the piston cylinder 503.

[0062] When the piston body 504 slides toward the interior of the sealed container 100, a negative pressure zone will be formed in the space inside the piston cylinder 503 away from the end of the sealed container 100. After the piston body 504 passes through the exhaust groove 506, the air inside the sealed container 100 (including the hot air containing more water vapor generated during the drying process) will enter the interior of the piston cylinder 503 through the exhaust groove 506, thereby realizing the process of extracting air from the sealed container 100.

[0063] When the piston body 504 slides in a direction away from the inside of the sealed container 100 (i.e., slides toward the end of the piston cylinder 503 outside the sealed container 100), the air in the piston cylinder 503 will be squeezed out. Since the end of the piston cylinder 503 outside the sealed container 100 is fixedly sealed and connected with a one-way valve 505, the design of the one-way valve 505 allows the air to be discharged to the outside and cannot flow back, so the squeezed air will be discharged into the external environment through the one-way valve 505. The air is discharged once.

[0064] As the eccentric disk 501 continues to rotate, the piston body 504 will continue to slide back and forth, thereby continuously extracting air from the sealed container 100 and discharging it to the outside, so that the inside of the sealed container 100 can maintain a certain negative pressure state to meet the demand for a negative pressure environment during the drying process of tea seeds.

[0065] Please refer to Figures 1 to 9 In one embodiment of the present application, the interior of the sealed container 100 is fixedly and sealedly connected with a ring-shaped receiving plate 507, and the receiving plate 507 is fixedly connected to the outer side of the piston cylinder 503 at a position flush with the bottom of the exhaust groove 506.

[0066] During operation, when the piston body 504 slides in a direction away from the inside of the sealed container 100, the air (including hot water vapor) inside the sealed container 100 will enter the piston cylinder 503 through the exhaust groove 506. The guide plate 507 is annularly arranged inside the sealed container 100 and connected to the outside of the piston cylinder 503, and its position is flush with the bottom of the exhaust groove 506. In this way, the guide plate 507 can play a role in guiding air, so that the air inside the sealed container 100 flows into the exhaust groove 506 more smoothly. Just like a guide device, it gathers and guides the surrounding air to the exhaust groove 506, thereby improving the efficiency of air extraction.

[0067] The receiving plate 507 is fixedly and sealedly connected to the inside of the sealed container 100, and it can also prevent impurities (such as tea seed debris, dust, etc.) during the drying process from entering the piston cylinder 503 to a certain extent. Since it covers the bottom of the exhaust groove 506, it acts as a barrier, making it difficult for impurities to be directly sucked into the exhaust groove 506, thereby reducing the possibility of clogging the inside of the piston cylinder 503 and the one-way valve 505 and other components, and ensuring the normal operation of the negative pressure assembly 500.

[0068] Please refer to Figures 1 to 9 In one embodiment of the present application, the driving assembly 600 includes a driving motor 601, which is fixedly mounted on the outside of the sealed container 100. A transmission shaft 602 is sealingly and rotatably connected to the sealed container 100. One end of the transmission shaft 602 located outside the sealed container 100 is transmission-connected to the driving motor 601. A driving gear 603 is fixedly mounted on one end of the transmission shaft 602 located inside the sealed container 100. A first driven gear 604 is fixedly mounted on the stirring assembly 400 inside the sealed container 100. A second driven gear 605 is fixedly mounted on the negative pressure assembly 500 inside the sealed container 100. The first driven gear 604 is meshed with the driving gear 603, and the second driven gear 605 is meshed with the first driven gear 604.

[0069] During operation, the drive motor 601 is installed outside the sealed container 100 as the power source of the entire drive assembly 600. When the drive motor 601 is powered on and starts to operate, the output shaft of the motor generates rotational power. Since one end of the transmission shaft 602 located outside the sealed container 100 is connected to the drive motor 601, the power generated by the drive motor 601 is transmitted to the transmission shaft 602, causing the transmission shaft 602 to start rotating around its axis.

[0070] One end of the transmission shaft 602 located inside the sealed container 100 is fixedly installed with a driving gear 603. As the transmission shaft 602 rotates, the driving gear 603 rotates synchronously. A first driven gear 604 fixedly installed on the central shaft 401 of the stirring assembly 400 meshes with the driving gear 603. According to the gear transmission principle, the rotation of the driving gear 603 drives the first driven gear 604 to rotate, thereby causing the stirring assembly 400 to start working. Its central shaft 401 drives the stirring blades 402 and the stirring rods 403 to stir the oil-tea seeds in the drying barrel 200, realizing the turning and mixing of the materials, promoting the full contact between the oil-tea seeds and the hot air, and facilitating the drying process.

[0071] Meanwhile, a second driven gear 605 fixedly installed on the eccentric disk 501 of the negative pressure assembly 500 also meshes with the first driven gear 604. The rotation of the first driven gear 604 further drives the second driven gear 605 to rotate, thereby providing power for the negative pressure assembly 500. After the negative pressure assembly 500 obtains power, the eccentric disk 501 starts to rotate, driving the piston body 504 to reciprocate in the piston cylinder 503 through the connecting rod 502, realizing the air extraction operation inside the sealed container 100 and creating the negative pressure environment required for drying.

[0072] When the driving motor 601 operates continuously, through the above-mentioned gear transmission system, the stirring assembly 400 and the negative pressure assembly 500 can work synchronously and continuously. Cooperating with the hot air circulation assembly 700, the hot air circulation assembly 700 conveys hot air into the drying barrel 200, the stirring assembly 400 makes the oil-tea seeds evenly heated, and the negative pressure assembly 500 extracts the air containing water vapor. The three work together to complete the efficient drying of the oil-tea seeds.

[0073] Please also refer to Figures 1 to 9 In an embodiment of the present application, the transmission connection between the transmission shaft 602 and the driving motor 601 includes a first bevel gear 606. The first bevel gear 606 is fixedly installed on the driving motor 601, and a second bevel gear 607 is fixedly installed on the transmission shaft 602. The first bevel gear 606 and the second bevel gear 607 are in meshing transmission.

[0074] During the working process, after the driving motor 601 is started, the first bevel gear 606 mounted on the driving motor 601 begins to rotate together with the motor shaft. The first bevel gear 606 meshes with the second bevel gear 607 fixedly mounted on the transmission shaft 602. According to the transmission principle of bevel gears, the rotational motion of the first bevel gear 606 can be transmitted to the second bevel gear 607, and due to the characteristics of bevel gears, the direction of power transmission can be changed while transmitting power. Using bevel gear transmission can change the direction of power transmission, which provides great flexibility for the spatial layout of the entire device. In practical applications, it is beneficial to improve the installation space and maintenance convenience of the overall equipment.

[0075] Please also refer to Figures 1 to 9 , in an embodiment of the present application, the hot air circulation assembly 700 includes a hot air flow fan 701, the hot air flow fan 701 is fixedly installed on the top of the sealed container 100, guide wind covers 702 are fixedly and hermetically installed at both the air inlet end and the air outlet end of the hot air flow fan 701, a ventilation pipe 703 is hermetically connected to the guide wind cover 702 near the air inlet end of the hot air flow fan 701, an electric control negative pressure relief valve 704 is installed on the ventilation pipe 703, and one end of the ventilation pipe 703 away from the hot air flow fan 701 is fixedly and hermetically communicated at a position near the middle on the outside of the sealed container 100; a mounting seat 705 is hermetically connected to the guide wind cover 702 near the air outlet end of the hot air flow fan 701, the mounting seat 705 is fixedly and hermetically installed on the top of the sealed container 100 corresponding to the central axis 401, a guide wind hole 706 communicating with the mounting seat 705 is opened in the center of the central axis 401, a plurality of uniformly distributed air blowing holes 707 are opened on the outer side of the stirring rod 403, the air blowing holes 707 communicate with the guide wind hole 706, and a plurality of uniformly distributed ventilation holes 708 are opened on the side wall of the drying barrel 200.

[0076] During the working process, after the hot air flow fan 701 is started, it begins to function. At its air inlet end, due to the rotation of the fan impeller, a negative pressure area is formed at the air inlet end guide wind cover 702, and under the action of atmospheric pressure, outside air is sucked into the hot air flow fan 701 through the ventilation pipe 703. The electric control negative pressure relief valve 704 installed on the ventilation pipe 703 can regulate the negative pressure condition in the ventilation pipe 703. When the negative pressure in the ventilation pipe 703 is too high, the relief valve can automatically open to an appropriate degree for pressure relief to ensure that air can be smoothly sucked in and avoid affecting the air suction efficiency due to too high negative pressure.

[0077] The air sucked into the hot air blower 701 is heated by the heating component inside the hot air blower 701 to become hot air, and then the hot air is discharged from the air outlet end of the hot air blower 701. The air guide cover 702 at the air outlet end guides the hot air, and the hot air enters the mounting seat 705 which is hermetically connected thereto. The mounting seat 705 is communicated with the air guide hole 706 at the top of the central shaft 401, and the hot air enters the inside of the central shaft 401 along the air guide hole 706 and then is transmitted downward along the central shaft 401. Since a number of uniformly distributed blowing holes 707 are provided on the outer side of the stirring rod 403 and the blowing holes 707 are communicated with the air guide hole 706, the hot air will be blown out from these blowing holes 707 and directly blown onto the oil-tea seeds in the drying barrel 200 to heat and dry them.

[0078] Meanwhile, a number of uniformly distributed ventilation holes 708 are provided on the side wall of the drying barrel 200. After the hot air heats the oil-tea seeds, it carries the water vapor evaporated from the oil-tea seeds and is discharged into the sealed container 100 through these ventilation holes 708. And the air in the sealed container 100 will be sucked into the hot air blower 701 again through the ventilation pipe 703 under the action of the negative pressure at the air inlet end of the hot air blower 701 for heating and circulation. In this way, a complete hot air circulation loop is formed, continuously providing heat for drying the oil-tea seeds and taking away the evaporated moisture.

[0079] The hot air is directly blown onto the oil-tea seeds through the air guide hole 707 on the central shaft 401 and the stirring rod 403, and under the stirring action of the stirring assembly 400 (the rotation of the stirring blades 402 and the stirring rod 403 makes the oil-tea seeds constantly turn over), the hot air can fully and evenly contact with each oil-tea seed, avoiding the situation of uneven local heating, ensuring that the whole oil-tea seeds can be efficiently and evenly heated and dried, which is beneficial to improving the drying quality and making the water content of the dried oil-tea seeds more uniform.

[0080] The hot air circulation loop formed by the hot air circulation assembly 700 enables the hot air to be reused. The hot air is discharged after heating the oil-tea seeds and carrying water vapor, and can be sucked into the hot air blower 701 again for heating and circulation, reducing the loss and waste of heat, improving the utilization rate of thermal energy, thereby reducing the energy consumption in the drying process to a certain extent, meeting the production requirements of energy conservation and consumption reduction, and saving considerable costs for long-term large-scale oil-tea seed drying operations.

[0081] The setting of the electronically controlled negative pressure relief valve 704 can flexibly regulate the air volume entering the hot air flow fan 701 according to the actual situation during the drying process, such as the air flow rate and negative pressure in the ventilation pipe 703. By adjusting the opening degree of the relief valve, parameters such as the air volume entering the hot air flow fan 701 and the wind pressure of the entire hot air circulation system can be controlled. Furthermore, according to the different drying stages and water contents of the oil-tea seeds and other requirements, the drying environment can be flexibly adjusted to optimize the drying effect.

[0082] In a specific embodiment of the present application, the hot air flow fan 701 is an electric heating type hot air flow fan. The electric heating type hot air flow fan converts electrical energy into heat energy through electric heating elements (such as electric heating wires, PTC ceramic heating elements, etc.) to heat the flowing air. When an electric current passes through the electric heating element, heat is generated according to Joule's law, and the air absorbs this heat and its temperature rises. The temperature control of the electric heating type hot air flow fan is relatively accurate and can achieve constant temperature heating.

[0083] Of course, in other embodiments of the present application, the hot air flow fan 701 can also be a direct combustion type hot air flow fan, an indirect heating type hot air flow fan, etc. The direct combustion type hot air flow fan directly heats the air by burning fuel (such as natural gas, liquefied gas, etc.). The fuel burns fully in the combustion chamber, and the generated high-temperature flame and hot gas are directly mixed with the air introduced by the fan, which can significantly increase the air temperature in a short time. The indirect heating type hot air flow fan uses a heat exchanger to heat the air. The heat generated by combustion is transferred to the flowing air through the wall surface of the heat exchanger, causing the air to warm up. This method ensures the isolation of the exhaust gas generated by combustion and the heated air, avoiding the mixing of combustion products (such as carbon monoxide, unburned fuel particles, etc.) into the hot air.

[0084] In a specific embodiment of the present application, the electronically controlled negative pressure relief valve 704 includes a valve body, a valve core, a seal, a driving device, a pressure sensor, and a control system.

[0085] During the working process, when the pressure inside the sealed container 100 is normal, that is, the pressure is higher than the negative pressure threshold set by the relief valve, the pressure signal detected by the pressure sensor is fed back to the control system. The control system determines that there is no need for pressure relief. At this time, the driving device keeps the valve core in the closed position, and the hot air with water vapor maintains a stable flow and pressure state in the hot air circulation assembly 700. When the pressure inside the sealed container 100 decreases as the negative pressure assembly 500 continues to work, that is, the pressure is lower than the negative pressure threshold set by the relief valve, the pressure sensor transmits the detected low-pressure signal to the control system. After receiving the signal, the control system processes and judges it, and issues an opening instruction to the driving device. After receiving the instruction, the driving device drives the valve core to move, opening the pressure relief channel to allow external air to enter the hot air circulation assembly 700 to maintain the normal flow and pressure state of the hot air.

[0086] Please refer to Figures 1 to 9 In one embodiment of the present application, the feed assembly 800 includes a feed hopper 801, which is fixedly and sealedly installed on the sealed container 100, the lower end of the feed hopper 801 passes through the top of the sealed container 100, and the upper end of the feed hopper 801 is rotatably connected to a first sealing cover 802.

[0087] During operation, when it is necessary to add tea seeds to the drying barrel 200, the first sealing cover 802 at the upper end of the feed hopper 801 is opened, and the tea seeds are poured into the feed hopper 801. Since the lower end of the feed hopper 801 penetrates the top of the sealed container 100, the tea seeds fall into the drying barrel 200 inside the sealed container 100 through the feed hopper 801 under the action of their own gravity. The feed hopper 801 plays a guiding and transitional role, smoothly transporting the tea seeds from the outside to the inside of the drying equipment. When not feeding, the first sealing cover 802 is closed and tightly connected to the upper end of the feed hopper 801 in rotation. This rotation connection method (for example, connected by a hinge) facilitates the opening and closing operation of the sealing cover. When the first sealing cover 802 is closed, in addition to ensuring that the negative pressure environment inside the sealed container 100 is not destroyed, it can also prevent external dust, impurities and moisture from entering the feed hopper 801, thereby preventing these foreign objects from entering the tea seeds being dried, thereby ensuring the purity of the drying process and the quality of the tea seeds after drying.

[0088] Please refer to Figures 1 to 9 In one embodiment of the present application, the discharge assembly 900 includes a discharge pipe 901, which is fixedly connected to the bottom of the drying barrel 200. The outer side of the discharge pipe 901 can be slidably sealed to pass through the bottom of the sealed container 100, and the outer end of the discharge pipe 901 is detachably connected to a second sealing cover 902.

[0089] During operation, when the oil-tea seed is dried and needs to be taken out of the drying device, the discharge assembly 900 must be operated first. At this time, the second sealing cover 902 detachably connected to the outer end of the discharge pipe 901 is removed to release the sealing restriction on the outlet of the discharge pipe 901. The outer side of the discharge pipe 901 is slidably sealed and connected to the bottom of the sealed container 100. This sliding sealing structure (such as using a sealing rubber sleeve to achieve sealing, while ensuring that the discharge pipe 901 can slide relative to the sealed container 100) enables the discharge pipe 901 to maintain the sealing between the sealed container 100 and to perform appropriate position adjustment or movement operation when detecting humidity and weighing. Since the oil-tea seed in the drying barrel 200 is at its bottom after drying, when the second sealing cover 902 is removed, under the action of gravity, the dried oil-tea seed will flow out naturally along the discharge pipe 901 to achieve the discharge operation.

[0090] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A tea seed drying device, characterized in that: The invention comprises a sealed container (100), wherein a drying barrel (200) is slidably connected to the inside of the sealed container (100), a humidity detection component (300) is arranged between the drying barrel (200) and the sealed container (100), a stirring component (400) which passes through the drying barrel (200) is rotatably connected to the inside of the sealed container (100), a negative pressure component (500) is installed on the side wall of the sealed container (100) near the top thereof, and a A driving assembly (600) is connected to the stirring assembly (400) and the negative pressure assembly (500) in a transmission manner; a hot air circulation assembly (700) connected to the stirring assembly (400) is installed on the sealed container (100); a feeding assembly (800) is installed on the sealed container (100) corresponding to the top of the drying barrel (200); and a discharging assembly (900) that passes through the sealed container (100) is fixedly connected to the bottom of the drying barrel (200); the negative pressure assembly (5 00) comprises an eccentric disk (501) rotatably connected to the top of the sealed container (100), the eccentric disk (501) is drivingly connected to the driving assembly (600), a connecting rod (502) is hingedly connected to the eccentric disk (501), a piston cylinder (503) penetrating the side wall of the sealed container (100) is fixedly and sealedly connected, a piston body (504) is sealed and slidably connected inside the piston cylinder (503), and the piston body (504) is hingedly connected to the connecting rod (502). The piston cylinder (503) has one end located outside the sealed container (100) fixedly and sealedly connected to a one-way valve (505), and an outer side surface of the piston cylinder (503) close to the inside of the sealed container (100) is provided with an exhaust groove (506); the inside of the sealed container (100) is fixedly and sealedly connected to an annular receiving plate (507), and the receiving plate (507) is fixedly connected to the outside of the piston cylinder (503) at a position flush with the bottom of the exhaust groove (506).

2. The camellia seed drying device according to claim 1, characterized in that: The humidity detection component (300) comprises a first fixing ring (301) fixedly connected to the inside of the sealed container (100), a plurality of pressure sensors (302) uniformly distributed in an annular shape are fixedly mounted on the first fixing ring (301), a second fixing ring (303) is fixedly connected to the top of the drying barrel (200) corresponding to the first fixing ring (301), the second fixing ring (303) is mounted on the pressure sensor (302), a plurality of limiting rods (304) uniformly distributed in an annular shape are connected to the first fixing ring (301), the limiting rods (304) can slidably penetrate the second fixing ring (303), a spring (305) is sleeved on the limiting rod (304), and the spring (305) abuts between the first fixing ring (301) and the second fixing ring (303).

3. The camellia seed drying device according to claim 1, characterized in that: The stirring assembly (400) includes a vertically arranged central axis (401), the central axis (401) can movably pass through the drying barrel (200), the bottom of the central axis (401) is rotatably connected to the bottom of the sealed container (100), the top of the central axis (401) is rotatably connected to the top of the sealed container (100), the outer side of the central axis (401) is fixedly connected with a spirally arranged stirring blade (402) at a position corresponding to the inside of the drying barrel (200), the stirring blade (402) is fixedly connected with a plurality of stirring rods (403) radially arranged along the drying barrel (200), and the outer side of the central axis (401) is transmission-connected to the driving assembly (600) at a position close to the top of the sealed container (100).

4. The camellia seed drying device according to claim 1, characterized in that: The driving assembly (600) comprises a driving motor (601), wherein the driving motor (601) is fixedly mounted outside the sealed container (100), a transmission shaft (602) is sealingly and rotatably connected to the sealed container (100), one end of the transmission shaft (602) located outside the sealed container (100) is transmission-connected to the driving motor (601), one end of the transmission shaft (602) located inside the sealed container (100) is fixedly mounted with a driving gear (603), a first driven gear (604) is fixedly mounted on the stirring assembly (400) inside the sealed container (100), a second driven gear (605) is fixedly mounted on the negative pressure assembly (500) inside the sealed container (100), the first driven gear (604) is meshed with the driving gear (603), and the second driven gear (605) is meshed with the first driven gear (604).

5. The camellia seed drying device according to claim 3, characterized in that: The hot air circulation component (700) comprises a hot air blower (701), the hot air blower (701) being fixedly mounted on the top of the sealed container (100), an air guide cover (702) being fixedly and sealedly mounted on both the air inlet end and the air outlet end of the hot air blower (701), a ventilation pipe (703) being sealedly connected to the air guide cover (702) near the air inlet end of the hot air blower (701), an electrically controlled negative pressure relief valve (704) being mounted on the ventilation pipe (703), and one end of the ventilation pipe (703) away from the hot air blower (701) being fixedly and sealedly connected to a position near the middle of the outer side of the sealed container (100). The air guide cover (702) near the air outlet end of the hot flow blower (701) is sealed with a mounting seat (705), the mounting seat (705) is fixedly and sealedly mounted on the top of the sealed container (100) corresponding to the central axis (401), the center of the central axis (401) is provided with an air guide hole (706) connected to the mounting seat (705), the outer side of the stirring rod (403) is provided with a plurality of evenly distributed blowing holes (707), the blowing holes (707) are connected to the air guide holes (706), and the side wall of the drying barrel (200) is provided with a plurality of evenly distributed ventilation holes (708).

6. The camellia seed drying device according to claim 1, characterized in that: The feed assembly (800) comprises a feed hopper (801), wherein the feed hopper (801) is fixedly and sealedly mounted on the sealed container (100), the lower end of the feed hopper (801) passes through the top of the sealed container (100), and the upper end of the feed hopper (801) is rotatably connected to a first sealing cover (802).

7. The camellia seed drying device according to claim 1, characterized in that: The discharge assembly (900) includes a discharge pipe (901), which is fixedly connected to the bottom of the drying barrel (200), and the outer side of the discharge pipe (901) is slidably sealed to pass through the bottom of the sealed container (100), and the outer end of the discharge pipe (901) is detachably connected to a second sealing cover (902).

8. The camellia seed drying device according to any one of claims 1 to 7, characterized in that: The bottom of the sealed container (100) is fixedly and sealedly connected with a drain valve (201).

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