A rice dryer
By setting up partitions and hot air chambers in the rice dryer, and utilizing multiple hot air holes and conveyors, the problem of uneven drying caused by rice accumulation is solved, thereby improving the uniformity and efficiency of rice drying.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI SHENGZHONG AGRICULTURAL DEVELOPMENT CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-06-19
Smart Images
Figure CN224382038U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of rice processing technology, and in particular to a rice dryer. Background Technology
[0002] In agricultural production, rice drying is one of the steps in rice processing, and rice drying silos play an important role in rice drying operations.
[0003] Currently, in common rice drying silos, rice is fed into the silo. Due to the inherent characteristics of rice, excessive accumulation within the silo forms a thick layer. This accumulation results in extremely uneven distribution of the rice within the silo; some areas are densely packed, while others are relatively sparse. During the drying process, hot air needs to make sufficient contact with the rice to remove moisture and achieve effective drying. However, when the rice is excessively piled up in the drying silo, the hot air encounters significant resistance as it passes through the rice layer. The hot air cannot penetrate evenly to the surface of each grain of rice and can only pass quickly through the gaps between the rice layers, resulting in most of the rice not receiving sufficient contact with the hot air.
[0004] Therefore, the rice grains located in the center of the rice pile are surrounded by other rice grains, causing them to dry at a much slower rate than the rice grains on the surface of the pile. This prolongs the overall drying time and reduces the drying efficiency.
[0005] To address the aforementioned problems, a rice dryer is now designed. Utility Model Content
[0006] This application provides a rice dryer to solve the problem in the related art where excessive rice accumulation in the rice drying chamber forms a thick layer, and the rice in the center of the accumulation layer dries at a lower speed, thus reducing drying efficiency.
[0007] In a first aspect, a rice dryer is provided, comprising:
[0008] A drying chamber has a cavity for drying rice. The drying chamber has an internal partition, and the partition has a hot air cavity for storing hot air. The hot air cavity has multiple hot air holes that communicate with the cavity. The drying chamber has multiple heating pipes that communicate with the hot air cavity to supply hot air to the hot air cavity.
[0009] The chamber is equipped with multiple conveyors arranged from top to bottom. A feeding hopper is located above the drying chamber. The multiple conveyors are used to transport rice from top to bottom. A discharge port is located at the bottom of the drying chamber, and a discharge mechanism is provided on the discharge port.
[0010] In some embodiments, the number of conveyors is at least three, each conveyor including a loading end and a unloading end, the loading end of the uppermost conveyor being located below the feeding hopper, the unloading end of the uppermost conveyor being located above the loading end of the middle conveyor, and the unloading end of the middle conveyor being located above the loading end of the lower conveyor.
[0011] In some embodiments, the conveyor includes two baffles disposed opposite to each other inside the chamber, two drive rollers rotatably disposed between the two baffles, a conveyor belt drivingly connected between the outer sides of the two drive rollers, and the loading end and unloading end being located at the two ends of the conveyor belt, respectively.
[0012] The conveyor also includes a reducer and a drive motor installed on the drying chamber. The output shaft of the drive motor is connected to the input shaft of the reducer, and the output shaft of the reducer extends into the chamber and is connected to one end of any drive roller.
[0013] In some embodiments, the discharge mechanism includes a conveying pipe communicating with the bottom of the discharge port, a screw conveyor is provided inside the conveying pipe, and a discharge hopper is provided below the end of the conveying pipe away from the discharge port.
[0014] In some embodiments, the screw conveyor includes a screw conveyor rod rotatably disposed inside a conveying pipe, a second drive motor and a second reducer disposed at the bottom of the drying chamber, the output shaft of the second drive motor being connected to the input shaft of the second reducer, the output shaft of the second reducer being connected to one end of the screw conveyor rod, and the other end of the screw conveyor rod being rotatably connected to the inner wall of the conveying pipe.
[0015] In some embodiments, the drying chamber is equipped with valves;
[0016] The valve includes a mounting plate installed inside the drying chamber, the mounting plate being located above the discharge port, the mounting plate having an opening, and a flip cover being arranged inside the opening, the drying chamber being equipped with a third drive motor, the output shaft of the third drive motor being connected to the flip cover, and the drying chamber and the mounting plate having through holes for accommodating the output shaft of the third drive motor.
[0017] In some embodiments, the drying chamber is provided with an exhaust pipe communicating with the chamber.
[0018] This application provides a rice dryer. By setting up a partition and a hot air chamber in the drying chamber, and using multiple hot air holes to evenly spray hot air into the chamber, the hot air can form a relatively uniform temperature field in the chamber. At the same time, multiple conveyors transport the rice from top to bottom. The rice flows continuously during the transport process and comes into full contact with the hot air, avoiding the problem of uneven drying caused by excessive accumulation of rice in local areas, and greatly improving the uniformity of rice drying.
[0019] The hot air can be applied evenly to the rice, and the rice continuously exchanges heat with the hot air during the transportation process, which allows the moisture in the rice to evaporate more quickly and improves the drying efficiency. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 A three-dimensional structural schematic diagram provided for an embodiment of this application;
[0022] Figure 2 A front sectional view provided for an embodiment of this application;
[0023] Figure 3 A three-dimensional schematic diagram of the discharge mechanism provided in the embodiments of this application;
[0024] Figure 4 This is a front sectional view of the discharge mechanism provided in the embodiments of this application;
[0025] Figure 5 Three-dimensional schematic diagram of the conveyor provided in the embodiments of this application Figure 1 ;
[0026] Figure 6 Three-dimensional schematic diagram of the conveyor provided in the embodiments of this application Figure 2 ;
[0027] Figure 7 This is a top sectional view of the partition provided in an embodiment of this application.
[0028] In the diagram: 1. Drying chamber; 2. Chamber; 3. Partition; 31. Hot air chamber; 32. Hot air vent; 33. Heating pipe; 4. Conveyor; 41. Feeding end; 42. Discharging end; 43. Baffle; 44. Drive roller; 45. Conveyor belt; 46. Reducer; 47. Drive motor; 5. Feeding hopper; 6. Discharge port; 7. Discharge mechanism; 71. Feeding pipe; 72. Screw conveyor; 721. Screw conveyor rod; 722. Drive motor II; 723. Reducer II; 73. Discharge hopper; 8. Valve; 81. Mounting plate; 82. Flip cover; 83. Drive motor III; 9. Exhaust pipe. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0030] This application provides a rice dryer that solves the problem in related technologies where excessive rice accumulation in the rice drying chamber forms a thick layer, resulting in lower drying speed and reduced drying efficiency for rice located in the center of the accumulation layer.
[0031] Please see Figure 1 , Figure 2 , Figure 3 and Figure 7 As shown, a rice dryer includes: a drying chamber 1 having a cavity 2 for drying rice; a partition 3 inside the drying chamber 1; a hot air cavity 31 for storing hot air inside the partition 3; a plurality of hot air holes 32 communicating with the cavity 2 on the hot air cavity 31; and a plurality of heating pipes 33 on the drying chamber 1, the heating pipes 33 communicating with the hot air cavity 31 for supplying hot air to the hot air cavity 31.
[0032] The chamber 2 is equipped with multiple conveyors 4 arranged from top to bottom. The drying chamber 1 is equipped with a feeding hopper 5. The multiple conveyors 4 are used to transport rice from top to bottom. The bottom of the drying chamber 1 is equipped with a discharge port 6, and the discharge port 6 is equipped with a discharge mechanism 7.
[0033] During operation, an external heat source delivers heat to the heat chamber 31 through the heat supply pipe 33 for storage. As the heat accumulates in the heat chamber 31, the pressure gradually increases, and the heat is then evenly injected into the chamber 2 through the heat outlet 32 to provide the necessary heat for drying the rice.
[0034] The operator pours the rice to be dried into the feeding hopper 5. Under the action of gravity, the rice falls onto the conveyor 4 at the top of the chamber 2. After the conveyor 4 is started, the rice moves slowly from top to bottom under the relay of multiple conveyors 4, and finally reaches the bottom of the drying chamber 1. During this process, the rice and hot air fully exchange heat to complete the drying operation. When the rice has completed the drying operation, the discharge mechanism 7 is started to discharge the dried rice from the discharge port 6 into the drying chamber 1 for subsequent storage or processing.
[0035] By setting up a partition 3 and a hot air chamber 31 in the drying chamber 1, and using multiple hot air holes 32 to evenly spray hot air into the chamber 2, the hot air can form a relatively uniform temperature field in the chamber 2. At the same time, multiple conveyors 4 transport the rice from top to bottom. The rice flows continuously during the transport process and comes into full contact with the hot air, avoiding the problem of uneven drying caused by excessive accumulation of rice in local areas, and greatly improving the uniformity of rice drying.
[0036] The hot air can be applied evenly to the rice, and the rice continuously exchanges heat with the hot air during the transportation process, which allows the moisture in the rice to evaporate more quickly and improves the drying efficiency.
[0037] like Figure 2 and Figure 5 As shown, it should be noted that the number of conveyors 4 in this embodiment is at least three. Each conveyor 4 includes a feeding end 41 and a discharging end 42. The feeding end 41 of the uppermost conveyor 4 is located below the feeding hopper 5, the discharging end 42 of the uppermost conveyor 4 is located above the feeding end 41 of the middle conveyor 4, and the discharging end 42 of the middle conveyor 4 is located above the feeding end 41 of the lower conveyor 4.
[0038] When the drying operation begins, the operator pours the rice to be dried into the feeding hopper 5 located above the drying chamber 1. Under the action of gravity, the rice falls smoothly into the feeding end 41 of the uppermost conveyor 4. When the conveyor 4 is started, the rice is transported from the feeding end 41 of the uppermost conveyor 4 to the unloading end 42. The unloading end 42 of the uppermost conveyor 4 is located above the feeding end 41 of the middle conveyor 4, so that the rice can fall from the uppermost conveyor 4 into the feeding end 41 of the middle conveyor 4.
[0039] The intermediate conveyor 4 transports the rice from its loading end 41 to its unloading end 42 in the same way, and in the same way, the rice falls smoothly into the loading end 41 of the lower conveyor 4.
[0040] Multiple conveyors 4 work in succession to slowly transport the rice from top to bottom. During the transport process, the hot air chamber 31 in the partition 3 inside the drying chamber 1 sprays hot air evenly into the chamber 2 through the hot air hole 32. The rice comes into full contact with the hot air as it moves and tumbles, achieving efficient drying.
[0041] like Figure 2 , Figure 5 and Figure 6 As shown, specifically, the conveyor 4 in this embodiment includes two baffles 43 disposed opposite to each other inside the chamber 2, two drive rollers 44 rotatably disposed between the two baffles 43, and a conveyor belt 45 is connected between the outer sides of the two drive rollers 44. The loading end 41 and the unloading end 42 are respectively located at the two ends of the conveyor belt 45.
[0042] The conveyor 4 also includes a reducer 46 and a drive motor 47 installed on the drying chamber 1. The output shaft of the drive motor 47 is connected to the input shaft of the reducer 46. The output shaft of the reducer 46 extends into the chamber 2 and is connected to one end of any drive roller 44.
[0043] By starting the drive motor 47, the output shaft of the drive motor 47 begins to rotate and transmits the high-speed rotational power to the reducer 46. The reducer 46 reduces the input high-speed power and increases its torque, and then extends the processed power into the chamber 2 through its output shaft and transmits it to the connected drive roller 44. The drive roller 44, which has obtained power, begins to rotate. Since the two drive rollers 44 are connected by a conveyor belt 45, the rotation of one drive roller 44 will drive the conveyor belt 45 to move, which in turn drives the other drive roller 44 to rotate, forming a cyclical system to transport rice.
[0044] The two ends of the conveyor belt 45 are defined as the loading end 41 and the unloading end 42. As the conveyor belt 45 operates, the rice is transported from the loading end 41 to the unloading end 42, thus realizing the rice transport function.
[0045] During the conveying process, the baffle 43 can prevent the rice from spilling from both sides of the conveyor belt 45.
[0046] like Figure 2 and Figure 3 As shown, in one embodiment, the discharge mechanism 7 includes a conveying pipe 71 that communicates with the bottom of the discharge port 6. A screw conveyor 72 is provided inside the conveying pipe 71, and a discharge hopper 73 is provided below the end of the conveying pipe 71 away from the discharge port 6.
[0047] Once the rice has been dried in the drying chamber 1 by hot air and reached the preset drying degree, the discharge mechanism 7 starts to work. The conveying pipe 71 is connected to the bottom of the discharge port 6. Under the action of gravity, the dried rice will fall naturally from the discharge port 6 at the bottom of the drying chamber 1 into the conveying pipe 71. The screw conveyor 72 starts and generates a thrust on the rice entering the conveying pipe 71, causing the rice to move along the axial direction of the conveying pipe 71 and finally be discharged from the discharge hopper 73, completing the entire discharge process.
[0048] Multiple support plates are provided between the two baffles 43 and located inside the conveyor belt 45. The support plates are in contact with the upper part of the inner surface of the conveyor belt 45 and support the rice on the conveyor belt 45.
[0049] like Figure 3 and Figure 4As shown, the screw conveyor 72 further includes a screw conveyor rod 721 rotatably disposed inside the conveying pipe 71, a second drive motor 722 and a second reducer 723 disposed at the bottom of the drying chamber 1. The output shaft of the second drive motor 722 is connected to the input shaft of the second reducer 723, the output shaft of the second reducer 723 is connected to one end of the screw conveyor rod 721, and the other end of the screw conveyor rod 721 is rotatably connected to the inner wall of the conveying pipe 71.
[0050] When the dryer completes the rice drying operation, drive motor 722 starts, and the output shaft of drive motor 722 begins to rotate. The power is transmitted to reducer 723, which reduces the input high-speed power and increases the torque, converting the power into torque and speed suitable for the operation of screw conveyor 721. Then, the processed power is transmitted to screw conveyor 721, causing screw conveyor 721 to start rotating.
[0051] The screw conveyor 721 is rotatably mounted inside the conveying pipe 71, with its other end rotatably connected to the inner wall of the conveying pipe 71, ensuring the stability of the screw conveyor 721 during operation. As the screw conveyor 721 rotates, its spiral blades generate an axial thrust on the rice grains inside the conveying pipe 71. The rice grains move along the axial direction of the conveying pipe 71 from the end near the discharge port 6 to the end with the discharge hopper 73, and are discharged from the discharge hopper 73, completing the entire discharge process.
[0052] like Figure 2 As shown, in one embodiment, a valve 8 is provided inside the drying chamber 1;
[0053] The valve 8 includes a mounting plate 81 disposed within the drying chamber 1, located above the discharge port 6. The mounting plate 81 has an opening, inside which a flip cover 82 is arranged. A drive motor 83 is mounted on the drying chamber 1, and the output shaft of the drive motor 83 is connected to the flip cover 82. The drying chamber 1 and the mounting plate 81 have through holes for accommodating the output shaft of the drive motor 83.
[0054] When the rice is being dried, valve 8 is in the closed state. At this time, drive motor 83 is not working, and the flip cover 82 is kept horizontal with the mounting plate 81, tightly covering the opening of the mounting plate 81, completely sealing the top of the discharge port 6. Hot air and rice are effectively blocked above valve 8, preventing the rice from leaking out of the discharge port 6 before it has reached the required drying time.
[0055] Once the rice reaches the preset drying level, drive motor 3 83 starts, and the output shaft of drive motor 3 83 begins to rotate. Since the drying chamber 1 and the mounting plate 81 have through holes to accommodate the output shaft of drive motor 3 83, the output shaft can drive the flip cover 82 to rotate. The flip cover 82 rotates around the connection point with the output shaft of drive motor 3 83, gradually opening the opening on the mounting plate 81. As the opening continues to open, the dried rice, under the action of gravity, enters the discharge mechanism 7 below through the opening and discharge port 6, thus completing the discharge process.
[0056] like Figure 1 and Figure 2 As shown, the drying chamber 1 in this embodiment is provided with an exhaust pipe 9 that communicates with the chamber 2.
[0057] During the rice drying process, a large amount of hot and humid air is continuously generated in the chamber 2 of the drying chamber 1. The exhaust pipe 9 provides a channel for the hot and humid air to be discharged. When the air pressure in the chamber 2 increases due to the accumulation of hot and humid air, the hot and humid air will naturally flow upward along the exhaust pipe 9 and be discharged from the drying chamber 1, thereby maintaining the relative balance of air pressure in the chamber 2.
[0058] The other end of exhaust pipe 9 is connected to the exhaust pipe to avoid direct emissions from affecting the rice drying workshop.
[0059] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0060] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0061] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.
Claims
1. A rice dryer, characterized in that, include: A drying chamber (1) has a cavity (2) for drying rice. The drying chamber (1) has a partition (3) inside. The partition (3) has a hot air cavity (31) for storing hot air. The hot air cavity (31) has multiple hot air holes (32) that communicate with the cavity (2). The drying chamber (1) has multiple heating pipes (33) that communicate with the hot air cavity (31) to supply hot air to the hot air cavity (31). The chamber (2) is equipped with multiple conveyors (4) arranged from top to bottom. The drying chamber (1) is equipped with a feeding hopper (5). The multiple conveyors (4) are used to transport rice from top to bottom. The drying chamber (1) is equipped with a discharge port (6) at the bottom. The discharge port (6) is equipped with a discharge mechanism (7).
2. The rice dryer as described in claim 1, characterized in that: The number of conveyors (4) is at least three. Each conveyor (4) includes a feeding end (41) and a discharging end (42). The feeding end (41) of the uppermost conveyor (4) is located below the feeding hopper (5). The discharging end (42) of the uppermost conveyor (4) is located above the feeding end (41) of the middle conveyor (4). The discharging end (42) of the middle conveyor (4) is located above the feeding end (41) of the lower conveyor (4).
3. A rice dryer as described in claim 2, characterized in that: The conveyor (4) includes two baffles (43) arranged opposite to each other inside the chamber (2), two active rollers (44) are arranged relative to each other between the two baffles (43), and a conveyor belt (45) is connected between the outer sides of the two active rollers (44). The feeding end (41) and the unloading end (42) are located at the two ends of the conveyor belt (45) respectively. The conveyor (4) also includes a reducer (46) and a drive motor (47) disposed on the drying chamber (1). The output shaft of the drive motor (47) is connected to the input shaft of the reducer (46). The output shaft of the reducer (46) extends into the chamber (2) and is connected to one end of any drive roller (44).
4. A rice dryer as described in claim 1, characterized in that: The discharge mechanism (7) includes a conveying pipe (71) connected to the bottom of the discharge port (6), a screw conveyor (72) is provided inside the conveying pipe (71), and a discharge hopper (73) is provided below the end of the conveying pipe (71) away from the discharge port (6).
5. A rice dryer as described in claim 4, characterized in that: The screw conveyor (72) includes a screw conveyor rod (721) rotatably disposed in the conveying pipe (71), a second drive motor (722) and a second reducer (723) disposed at the bottom of the drying chamber (1). The output shaft of the second drive motor (722) is connected to the input shaft of the second reducer (723). The output shaft of the second reducer (723) is connected to one end of the screw conveyor rod (721), and the other end of the screw conveyor rod (721) is rotatably connected to the inner wall of the conveying pipe (71).
6. A rice dryer as described in claim 1, characterized in that: The drying chamber (1) is equipped with a valve (8); The valve (8) includes an installation plate (81) installed in the drying chamber (1). The installation plate (81) is located above the discharge port (6). The installation plate (81) has an opening, and a flip cover (82) is arranged inside the opening. The drying chamber (1) is equipped with a drive motor (83). The output shaft of the drive motor (83) is connected to the flip cover (82). The drying chamber (1) and the installation plate (81) have through holes for accommodating the output shaft of the drive motor (83).
7. A rice dryer as described in claim 1, characterized in that: The drying chamber (1) is equipped with an exhaust pipe (9) that communicates with the chamber (2).