A high-efficiency and energy-saving grain drying device

Abstract

This utility model relates to the field of grain dryer technology and discloses a high-efficiency and energy-saving grain drying device, including a drying tank and a tank cover fixedly installed on the upper end of the drying tank. The upper end of the tank cover is connected to an inlet pipe and an exhaust structure, and the bottom of the drying tank is connected to a discharge pipe. A support structure is provided at the lower end of the drying tank. The support structure includes a support base fixedly installed at the lower end of the drying tank. Below the support base are multiple sets of circumferentially distributed adjustment components. The lower end of each set of adjustment components is connected to a support column, and the bottom end of each support column is provided with a base plate. The adjustment component includes a shell, and the upper end of the shell is fixed with a top cover. This utility model achieves independent and precise adjustment of the height of the support column connected to the adjustment component by rotating the worm gear of any adjustment component, driving the corresponding worm wheel to rotate, and driving the one-way screw and support rod to perform vertical lifting and lowering movements.

Description

Technical Field

[0001] This utility model relates to the field of grain dryer technology, specifically to a high-efficiency and energy-saving grain drying device. Background Technology

[0002] Grain drying equipment, also known as grain dryer or dryer, is a mechanical device used to reduce the moisture content of grains. Its main purpose is to quickly and evenly dry newly harvested, high-moisture grains (such as rice, corn, wheat, etc.) to a safe storage moisture level through heat, ventilation, and other methods, so as to prevent problems such as mold, sprouting, rotting, or insect infestation caused by excessive moisture during storage.

[0003] Utility model patent application CN220103625U discloses a grain dryer, mainly composed of a machine body, an external fixing frame, a temperature detector, a stirring exhaust frame, and a filter plate. This technical solution significantly improves grain drying efficiency and reduces drying time by injecting gas heated by the heating frame into the drying chamber through exhaust filter holes and aided by the rotation of the stirring exhaust frame. Furthermore, by moving the exhaust telescopic rings on both sides away from the center, the air inside the drying chamber can be filtered by the filter plate and connected to the outside air, further accelerating the air circulation speed within the drying chamber, thereby further improving drying efficiency and reducing drying costs and time.

[0004] The grain dryer disclosed in the aforementioned document has the following defects: In this technical solution, multiple support columns are set at the bottom of the machine body to support the machine body. Therefore, when the equipment is installed on uneven ground, the contact height between the bottom of each support column and the undulating terrain is different. This will directly cause the installation plane of the machine body, which is rigidly connected to the support columns, to lose its horizontal reference, thus causing it to tilt. Utility Model Content

[0005] The purpose of this invention is to provide a highly efficient and energy-saving grain drying device that solves the problem that the support column in a grain dryer cannot be independently adjusted in height.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a high-efficiency and energy-saving grain drying device, comprising a drying tank and a tank cover fixedly installed on the upper end of the drying tank. The upper end of the tank cover is connected to a feed pipe and an exhaust structure. The bottom of the drying tank is connected to a discharge pipe. A support structure is provided at the lower end of the drying tank. The support structure includes a support base fixedly installed at the lower end of the drying tank. Multiple sets of circumferentially distributed adjustment components are provided below the support base. The lower end of each set of adjustment components is connected to a support column. The bottom end of each support column is provided with a base plate. The adjustment components include a shell. A top cover is fixedly installed on the upper end of the shell. A worm gear is rotatably connected inside the shell. A sleeve is connected to one side of the shell. A worm gear meshing with the worm gear is rotatably connected inside the sleeve. A threaded hole is opened in the center of the worm gear. A one-way screw is threadedly connected in the threaded hole. A support rod is fixedly installed on the upper end of the one-way screw. The upper end of the support rod passes through the top cover and is fixedly connected to the support base.

[0007] Furthermore, one end of the worm extends to the outside of the sleeve and is fixedly fitted with a rotating handle.

[0008] Furthermore, the top cover has a mounting hole in the middle for the support rod to pass through, the inner wall of the mounting hole has a limiting groove along its axial direction, and a limiting block is fixedly provided on the outer side of the support rod, the limiting block being slidably fitted inside the limiting groove.

[0009] Furthermore, two opposing connectors are fixedly installed inside the housing, and the worm gear is rotatably connected between the two connectors.

[0010] Furthermore, the exhaust structure includes a fixed base fixedly installed inside the top of the can lid, a main exhaust pipe is installed inside the fixed base, the lower end of the main exhaust pipe is connected to multiple exhaust nozzles, the upper end of the main exhaust pipe is connected to a connecting pipe, the upper end of the connecting pipe passes through the can lid and extends upward, the upper end of the can lid is also connected to a pressure relief pipe, a pressure relief valve is fixedly installed on the outside of the pressure relief pipe, and a cover plate is hinged to one end of the feed pipe.

[0011] Furthermore, a support frame is fixedly installed on the upper end of the can lid, and a hollow rotating shaft is rotatably connected to the middle of the support frame. The lower end of the hollow rotating shaft passes through the can lid and extends into the interior of the drying tank. Multiple stirring rods are fixedly installed on the outer side of the hollow rotating shaft, and a scraper is provided between two adjacent stirring rods. The outer side of the scraper contacts the inner wall of the drying tank.

[0012] Furthermore, a connecting rod is rotatably connected inside the hollow rotating shaft, and a rod body is threadedly connected to the lower end of the connecting rod. The rod body is located inside the discharge pipe and an auger is fixedly connected to its outer side. The outer edge of the auger contacts the inner wall of the discharge pipe. A first synchronous wheel is fixedly installed at the upper end of the hollow rotating shaft, and a second synchronous wheel is fixedly installed at the upper end of the connecting rod. A cavity is opened at the upper end of the drying tank, and the cavity is filled with heat-insulating sponge.

[0013] This utility model has the following beneficial effects: (1) By rotating the rotary handle, the worm gear fixed to it is driven to rotate inside the sleeve. The rotation of the worm gear drives the worm wheel meshing with it to rotate inside the outer shell. Since the worm wheel has a threaded hole in the center and forms a threaded fit with the one-way screw, the rotation of the worm wheel will be converted into the linear lifting and lowering motion of the one-way screw in the vertical direction. When the one-way screw rises or falls, it pushes or pulls the support seat above through the support rod fixed at its top, thereby raising or lowering one side of the drying tank. The change of the support seat is finally transmitted to the support column and base plate below the adjustment component, realizing the independent and precise adjustment of the height of the support point.

[0014] (2) This utility model actively turns and mixes the grain in the drying tank by rotating the stirring rod, ensuring that the grain particles are fully and evenly in contact with the hot air, thus improving the drying efficiency and uniformity. At the same time, the scraper that is in close contact with the inner wall of the drying tank continuously scrapes away the damp grain or clumps that may be attached to the inner wall during the rotation process, effectively preventing the grain from being locally stuck, overheated or gelatinized on the hot wall.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the support structure of this utility model; Figure 3 This is a schematic diagram of the adjustment component structure of this utility model; Figure 4 This is a cross-sectional view of the adjusting component structure of this utility model. Figure 1 ; Figure 5 This is a cross-sectional view of the adjusting component structure of this utility model. Figure 2 ; Figure 6 This is a schematic diagram of the internal structure of the drying tank of this utility model; Figure 7 This is a cross-sectional view of the rotating shaft and connecting rod structure of this utility model; The attached diagram lists the components represented by each number as follows: In the diagram: 1. Drying tank; 101. Discharge pipe; 2. Tank lid; 201. Feed pipe; 202. Pressure relief pipe; 3. Exhaust structure; 301. Fixed base; 302. Main exhaust pipe; 303. Exhaust nozzle; 304. Connecting pipe; 4. Support structure; 401. Support base; 402. Adjustment component; 4021. Outer shell; 4022. Top cover; 4023. Worm gear; 4024. Sleeve; 4025. Worm; 4026. One-way screw; 4027. Support rod; 4028. Rotating handle; 4029. Connector; 403. Support column; 404. Base plate; 5. Support frame; 6. Hollow rotating shaft; 7. Stirring rod; 8. Scraper; 9. Connecting rod; 10. Rod body; 11. Screwdriver; 12. First synchronous pulley; 13. Second synchronous pulley; 14. Insulating sponge; 15. Cover plate. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1, like Figures 1-5As shown, this utility model is a high-efficiency and energy-saving grain drying device, including a drying tank 1 and a tank cover 2 fixedly installed on the upper end of the drying tank 1. The upper end of the tank cover 2 is connected to a feed pipe 201 and an exhaust structure 3. The bottom of the drying tank 1 is connected to a discharge pipe 101. A support structure 4 is provided at the lower end of the drying tank 1. The support structure 4 includes a support base 401 fixedly installed at the lower end of the drying tank 1. Below the support base 401 are multiple sets of circumferentially distributed adjustment components 402. The lower end of each set of adjustment components 402 is connected to a support column 403. The bottom end of each support column 403 is provided with a base plate 40. 4. The adjusting component 402 includes a housing 4021, a top cover 4022 fixed to the upper end of the housing 4021, a worm gear 4023 rotatably connected inside the housing 4021, a sleeve 4024 connected to one side of the housing 4021, a worm 4025 rotatably connected inside the sleeve 4024 and meshing with the worm gear 4023, a threaded hole is opened in the center of the worm gear 4023, a one-way screw 4026 is threadedly connected inside the threaded hole, a support rod 4027 is fixed to the upper end of the one-way screw 4026, and the upper end of the support rod 4027 passes through the top cover 4022 and is fixedly connected to the support base 401. Specifically, by rotating the worm 4025 of any adjusting component 402, the corresponding worm wheel 4023 is driven to rotate, which in turn drives the one-way screw 4026 and the support rod 4027 to move vertically up and down, thereby realizing independent and precise adjustment of the height of the support column 403 connected to the adjusting component 402. One end of the worm gear 4025 extends to the outside of the sleeve 4024 and is fixedly mounted with a rotating handle 4028; When adjusting the height of a certain position, the operator first rotates the rotating handle 4028, which drives the worm gear 4025 fixed thereto to rotate within the sleeve 4024. The rotation of the worm gear 4025 drives the worm wheel 4023, which meshes with it, to rotate within the housing 4021. Since the worm wheel 4023 has a threaded hole in its center and forms a threaded engagement with the one-way screw 4026, the rotation of the worm wheel 4023 is converted into a linear lifting and lowering motion of the one-way screw 4026 in the vertical direction. When the one-way screw 4026 rises or falls, it pushes or pulls the support seat 401 above through the support rod 4027 fixed at its top, thereby raising or lowering one side of the drying tank 1. The change of the support seat 401 is ultimately transmitted to the support column 403 and the base plate 404 below the adjustment component 402, realizing independent and precise adjustment of the height of the support point. The top cover 4022 has a mounting hole in the middle for the support rod 4027 to pass through. The inner wall of the mounting hole has a limiting groove along its axial direction. A limiting block is fixed on the outer side of the support rod 4027 and the limiting block is slidably fitted inside the limiting groove. When the worm gear 4023 rotates to drive the one-way screw 4026 to rotate, the sliding fit between the limiting block and the limiting groove restricts the degree of freedom of the support rod 4027 to rotate circumferentially with the screw, forcing the support rod 4027 to only perform pure vertical lifting and lowering motion strictly along the limiting groove. The housing 4021 has two opposite connecting parts 4029 fixedly installed inside, and the worm gear 4023 is rotatably connected between the two connecting parts 4029. Among them, the connecting piece 4029 provides rotational support for the worm gear 4023, ensuring that the worm gear 4023 and the worm 4025 always maintain a stable meshing position and transmission relationship; Specifically, after the grain drying device is moved to the work site, it is initially placed on the ground using the base plates 404 at the bottom of each support column 403. If the ground is uneven, causing the tank to tilt, a leveling operation can be performed. The operator rotates the rotating handle 4028 of the adjusting component 402 on the side that needs to be raised or lowered. The rotating handle 4028 directly drives the worm gear 4025 fixed to it to rotate within the sleeve 4024. The rotation of the worm gear 4025 drives the worm wheel 4023 meshing with it to rotate stably within the outer casing 4021 between the two fixed connecting parts 4029. Since the worm wheel 4023 has a threaded hole in its center and is threadedly engaged with the one-way screw 4026, the rotational motion of the worm wheel 4023 is converted into the rotation of the one-way screw 4026. The linear upward and downward trend of 6. At this time, the limiting block fixed on the support rod 4027 is restricted to sliding in the axial limiting groove of the mounting hole of the top cover 4022, thereby preventing the support rod 4027 and the one-way screw 4026 from rotating. This forces the one-way screw 4026 to only make a strictly vertical linear movement. Thus, the one-way screw 4026 drives the support rod 4027 at its top to rise or fall together. The support rod 4027 directly pushes or pulls the support seat 401 above, thereby fine-tuning the overall height of this side of the drying tank 1. Finally, the height change is transmitted to the corresponding support column 403 and the bottom plate 404. By adjusting the adjustment components 402 at each location independently in sequence, the level of the drying tank 1 can be accurately corrected, providing a stable foundation for subsequent drying operations.

[0020] Example 2, like Figure 1 , Figure 6 and Figure 7 As shown, the exhaust structure 3 includes a fixed base 301 fixedly installed inside the top of the tank cover 2. A main exhaust pipe 302 is installed inside the fixed base 301. The lower end of the main exhaust pipe 302 is connected to multiple exhaust nozzles 303. The upper end of the main exhaust pipe 302 is connected to a connecting pipe 304. The upper end of the connecting pipe 304 passes through the tank cover 2 and extends upward. The upper end of the tank cover 2 is also connected to a pressure relief pipe 202. A pressure relief valve is fixedly installed on the outside of the pressure relief pipe 202. A cover plate 15 is hinged to one end of the feed pipe 201. During the drying process, external hot air is sent into the main exhaust pipe 302 through the connecting pipe 304 and sprayed downward through multiple exhaust nozzles 303 to heat and dry the grain. The hot and humid exhaust gas from the grain evaporation accumulates and rises in the drying tank 1. When the exhaust gas pressure reaches the normal operation emission requirements, it will be discharged directly through the pressure relief pipe 202. A support frame 5 is fixedly installed on the upper end of the can lid 2. A hollow rotating shaft 6 is rotatably connected to the middle of the support frame 5. The lower end of the hollow rotating shaft 6 passes through the can lid 2 and extends into the interior of the drying tank 1. Multiple stirring rods 7 are fixedly installed on the outer side of the hollow rotating shaft 6. A scraper 8 is provided between two adjacent stirring rods 7. The outer side of the scraper 8 contacts the inner wall of the drying tank 1. The rotation of the stirring rod 7 actively turns and mixes the grain in the drying tank 1, ensuring that the grain particles are fully and evenly in contact with the hot air, thus improving the drying efficiency and uniformity. At the same time, the scraper 8, which is in close contact with the inner wall of the drying tank 1, continuously scrapes away any damp grain or clumps that may be attached to the inner wall during the rotation process, effectively preventing the grain from being locally stuck, overheated, or gelatinized on the hot wall. The hollow shaft 6 is rotatably connected to a connecting rod 9. The lower end of the connecting rod 9 is threadedly connected to a rod body 10. The rod body 10 is located inside the discharge pipe 101 and is fixedly connected to an auger 11 on its outer side. The outer edge of the auger 11 contacts the inner wall of the discharge pipe 101. The upper end of the hollow shaft 6 is fixedly installed with a first synchronous wheel 12. The upper end of the connecting rod 9 is fixedly installed with a second synchronous wheel 13. The upper end of the drying tank 1 has a cavity, which is filled with heat-insulating sponge 14. The hollow rotating shaft 6 and the connecting rod 9 rotate independently. The hollow rotating shaft 6 is driven by the first synchronous wheel 12 at its top, which drives the stirring rod 7 and the scraper 8 to rotate, performing the stirring and scraping functions in the drying tank 1. At the same time, the connecting rod 9 is driven by another external force through the second synchronous wheel 13 at its top. The rod body 10 and the auger 11 at its lower end rotate synchronously in the discharge pipe 101. Through the independent dual-shaft drive, the two processes of stirring and drying and bottom discharge are operated in parallel. During the drying process, the auger 11 can be started at any time to continuously and controllably discharge the dried material at the bottom without interrupting the stirring and drying process, thereby improving the continuous operation capability and overall efficiency of the equipment. The heat insulation sponge 14 filled in the cavity effectively reduces the heat loss of the drying tank 1 and improves the heat energy utilization rate.

[0021] Specifically, first, the cover plate 15 hinged to one end of the feed pipe 201 is opened, and the grain to be dried is put into the drying tank 1. After the drying operation is started, the drying hot air generated by the external hot air generator is transported through the connecting pipe 304 to the main exhaust pipe 302 fixed in the fixed seat 301 at the top of the tank cover 2, and is evenly sprayed downward from multiple exhaust nozzles 303 at its lower end to heat the grain. At the same time, the hollow rotating shaft 6 driven by the first synchronous wheel 12 starts to rotate, driving multiple stirring rods 7 installed on its outer side to continuously turn the grain, ensuring that each grain can fully contact the hot air. The scraper 8 installed between the stirring rods 7 rotates synchronously with the shaft, and its outer side is closely attached to the inner wall of the drying tank 1 to continuously scrape off any wetness that may adhere to it. To prevent grain from clumping and localized overheating or gelatinization, the water vapor generated by the heated grain forms humid heat exhaust gas, which rises inside the tank and is continuously discharged through the pressure relief pipe 202 at the upper end of the tank cover 2 (the pressure relief valve is normally open under normal pressure). The heat-insulating sponge 14 filling the cavity at the upper end of the tank cover 2 effectively reduces heat loss. When the grain at the bottom reaches the required dryness, the connecting rod 9 driven by the second synchronous wheel 13 can be started independently without stopping the stirring and drying process. The connecting rod 9 drives the rod body 10 connected by threads at its lower end and the auger 11 fixed on the rod body 10 to rotate in the discharge pipe 101, thereby continuously, evenly and controllably discharging the dried grain from the bottom, realizing the parallel and continuous operation of the drying and discharge processes.

[0022] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high-efficiency and energy-saving grain drying device, comprising a drying tank (1) and a tank cover (2) fixedly installed on the upper end of the drying tank (1), wherein the upper end of the tank cover (2) is connected to a feed pipe (201) and an exhaust structure (3), and the bottom of the drying tank (1) is connected to a discharge pipe (101), characterized in that: The lower end of the drying tank (1) is provided with a support structure (4); The support structure (4) includes a support base (401) fixedly installed at the lower end of the drying tank (1). The support base (401) is provided with multiple sets of adjustment components (402) distributed in the circumferential direction. The lower end of each set of adjustment components (402) is connected to a support column (403). The bottom end of each support column (403) is provided with a base plate (404). The adjusting assembly (402) includes a housing (4021), a top cover (4022) fixed to the upper end of the housing (4021), a worm gear (4023) rotatably connected inside the housing (4021), a sleeve (4024) connected to one side of the housing (4021), a worm (4025) rotatably connected inside the sleeve (4024) and meshing with the worm gear (4023), a threaded hole is opened in the center of the worm gear (4023), a one-way screw (4026) is threadedly connected inside the threaded hole, a support rod (4027) is fixed to the upper end of the one-way screw (4026), the upper end of the support rod (4027) passes through the top cover (4022) and is fixedly connected to the support base (401).

2. The high-efficiency and energy-saving grain drying device according to claim 1, characterized in that: One end of the worm (4025) extends to the outside of the sleeve (4024) and is fixedly mounted with a rotating handle (4028).

3. The high-efficiency and energy-saving grain drying device according to claim 1, characterized in that: The top cover (4022) has a mounting hole in the middle for the support rod (4027) to pass through. The inner wall of the mounting hole has a limiting groove along its axial direction. A limiting block is fixed on the outer side of the support rod (4027), and the limiting block is slidably fitted inside the limiting groove.

4. The high-efficiency and energy-saving grain drying device according to claim 3, characterized in that: The housing (4021) has two opposite connecting parts (4029) fixedly installed inside, and the worm gear (4023) is rotatably connected between the two connecting parts (4029).

5. The high-efficiency and energy-saving grain drying device according to claim 1, characterized in that: The exhaust structure (3) includes a fixed seat (301) fixedly installed inside the top of the can cover (2). A main exhaust pipe (302) is installed inside the fixed seat (301). The lower end of the main exhaust pipe (302) is connected to a plurality of exhaust nozzles (303). The upper end of the main exhaust pipe (302) is connected to a connecting pipe (304). The upper end of the connecting pipe (304) passes through the can cover (2) and extends upward. The upper end of the can cover (2) is also connected to a pressure relief pipe (202). A pressure relief valve is fixedly installed on the outside of the pressure relief pipe (202). One end of the feed pipe (201) is hinged to a cover plate (15).

6. The high-efficiency and energy-saving grain drying device according to claim 5, characterized in that: A support frame (5) is fixedly installed on the upper end of the can lid (2). A hollow rotating shaft (6) is rotatably connected to the middle of the support frame (5). The lower end of the hollow rotating shaft (6) passes through the can lid (2) and extends into the interior of the drying tank (1). Multiple stirring rods (7) are fixedly installed on the outer side of the hollow rotating shaft (6). A scraper (8) is provided between two adjacent stirring rods (7). The outer side of the scraper (8) contacts the inner wall of the drying tank (1).

7. The high-efficiency and energy-saving grain drying device according to claim 6, characterized in that: The hollow rotating shaft (6) is rotatably connected to a connecting rod (9), and the lower end of the connecting rod (9) is threadedly connected to a rod body (10). The rod body (10) is located inside the discharge pipe (101) and is fixedly connected to an auger (11) on its outer side. The outer edge of the auger (11) is in contact with the inner wall of the discharge pipe (101). The upper end of the hollow rotating shaft (6) is fixedly installed with a first synchronous wheel (12), and the upper end of the connecting rod (9) is fixedly installed with a second synchronous wheel (13). The upper end of the drying tank (1) is provided with a cavity, and the cavity is filled with heat-insulating sponge (14).

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