A kind of turnover structure for grain dryer
By using a modular sleeve and connecting block structure, the problem of brittle grains being easily broken and powders being difficult to tumble caused by the rigid fixing of the stirring rod in existing grain dryers is solved. This achieves efficient tumbling and powder crushing in grain dryers, reducing equipment replacement and maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BENGBU QIONGHUAI GRAIN & OIL
- Filing Date
- 2025-06-17
- Publication Date
- 2026-06-23
AI Technical Summary
The rigid fixed stirring rod in existing grain dryers makes brittle grains easy to break and is not conducive to the tumbling of different grains, especially the crushing of powdery grains.
It adopts a modular structure of sleeve, positioning shaft and connecting block, and through the design of limiting groove and threaded hole, it can quickly install and replace the stirring rod or the arc plate with crushing teeth to adapt to the turning needs of different grains.
It improves the efficiency of grain dryers, reduces manufacturing costs, prevents powder residue, and adapts to the turning requirements of different types of grains.
Smart Images

Figure CN224398268U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drying equipment technology, specifically a turning structure for a grain dryer. Background Technology
[0002] By incorporating a turning structure in the grain dryer, uniform heating of the grain is achieved during drying, thereby ensuring the quality of the grain.
[0003] Chinese utility model patent CN221611753U discloses a grain dryer: The drying chamber is equipped with a stirring device, which includes a tray fixedly mounted on the outer wall of the shell. A stirring motor is fixedly mounted on the tray, and a stirring shaft is fixedly mounted on the output end of the stirring motor. The end of the stirring shaft away from the output end of the stirring motor is rotatably mounted on the inner wall of the shell. Multiple evenly arranged stirring rods are fixedly mounted on the stirring shaft. This stirring device achieves the tumbling of the grain.
[0004] However, existing technologies still have shortcomings:
[0005] The above setup directly drives the stirring rod to rotate via the stirring shaft, thus turning the grain over. The sharp angle of the stirring rod edge causes stress concentration, making the endosperm of brittle grains easily break. Furthermore, it is not conducive to breaking down solid powders during the drying and processing of powdered grains such as wheat flour. In other words, the rigid fixed setup of the stirring rod is not conducive to turning different grains over. Utility Model Content
[0006] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a turning structure for a grain dryer to address the problem in the prior art where the rigid fixing of the stirring rod and direct rotation of the stirring rod via the stirring shaft are not conducive to turning different types of grains.
[0007] To achieve the above objectives, this utility model proposes a turning structure for a grain dryer, including a sleeve, a positioning shaft fixedly installed inside the sleeve, a plurality of limiting grooves opened on the sleeve, threaded holes symmetrically arranged at both ends of the limiting grooves, a connecting block fixedly installed inside the limiting grooves, and a stirring rod fixedly installed on the connecting block.
[0008] As a further embodiment of this utility model: the connecting block includes a mounting shaft, a support plate, and a limiting plate, wherein the mounting shaft is fixedly disposed above the support plate, and the limiting plate is fixedly disposed below the support plate.
[0009] As a further embodiment of this utility model: a plurality of mounting shafts are provided, and the mounting shafts are equidistantly arranged on the support plate.
[0010] As a further embodiment of this utility model: threaded holes are symmetrically provided at both ends of the limiting plate, the limiting plate is disposed inside the sleeve, the threaded holes on the limiting plate correspond to the threaded holes on the sleeve, and fixing bolts are provided in the threaded holes.
[0011] As a further embodiment of this utility model, an arc-shaped plate is fixedly provided on the connecting block.
[0012] As a further embodiment of this utility model: one end of the arc-shaped plate is fixedly connected to the connecting block, and the other end is fixedly provided with a breaking tooth.
[0013] As a further embodiment of this utility model: a connecting plate is welded to the lower end of the arc-shaped plate, and the connecting plate is fixedly connected to the connecting block.
[0014] As a further embodiment of this utility model: the sleeve is fixedly connected to the positioning shaft via a pair of flanges.
[0015] As a further embodiment of this utility model, the positioning shaft is rotatably mounted inside the dryer.
[0016] As a further embodiment of this invention, the positioning shaft is fixedly connected to the drive device on the dryer.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] 1. By modularly setting the sleeve, positioning shaft, and connecting block, and fixing the stirring component on the connecting block, which can be a stirring rod, an arc plate with crushing teeth, or other structures, it is easy to quickly assemble the entire structure, facilitate the turning and processing of different grains, facilitate the installation, maintenance, and replacement of the turning equipment, improve the efficiency of use, and reduce manufacturing costs.
[0019] 2. A limiting groove is set on the positioning shaft, which matches the limiting plate in the connecting block. Both the limiting plate and the sleeve are provided with threaded holes. By screwing in a pair of fixing bolts, it is easy to install a connecting block. The stirring rod is connected through the mounting shaft. By pre-installing several equidistant mounting shafts, it is easy to select the appropriate number of stirring rods for subsequent installation. Using mounting shafts instead of mounting grooves, the device has fewer dead corners and prevents powder residue. Attached Figure Description
[0020] Figure 1 The three-dimensional structure of this utility model Figure 1 ;
[0021] Figure 2 This is an exploded view of the present invention;
[0022] Figure 3 The three-dimensional structure of this utility model Figure 2 .
[0023] In the diagram: 1. Sleeve; 2. Positioning shaft; 3. Connecting block; 4. Fixing bolt; 5. Stirring rod; 6. Flange; 7. Arc plate; 8. Crushing tooth; 9. Limiting groove; 10. Threaded hole; 11. Mounting shaft; 12. Support plate; 13. Limiting plate. Detailed Implementation
[0024] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0025] Example 1:
[0026] like Figure 1-2 As shown, a turning structure for a grain dryer includes a sleeve 1. A positioning shaft 2 is fixedly installed inside the sleeve 1. In use, the positioning shaft 2 is rotatably mounted inside the dryer and connected to a drive device to drive the rotation of the entire device, thereby turning the grain. The sleeve 1 is fixedly connected to the positioning shaft 2 via a pair of flanges 6. A stirring rod 5 is detachably mounted on the sleeve 1. The stirring rod 5 is replaceable to facilitate turning different types of grain. Several limiting grooves 9 are formed on the sleeve 1. Threaded holes 10 are symmetrically arranged at both ends of the limiting grooves 9. A connecting block 3 is fixedly installed inside the limiting grooves 9. The connecting block 3 includes a mounting shaft 11, a support plate 12, and a limiting plate 13. Several mounting shafts 11 are provided. The mounting shafts 11 are fixedly set above the support plate 12. The mounting shafts 11 are equidistantly set on the support plate 12 to connect the connecting block 3 and the stirring rod 5. The limiting plate 13 is fixedly set below the support plate 12 to connect the connecting block 3 and the sleeve 1. The limiting plate 13 has threaded holes 10 symmetrically set at both ends. The limiting plate 13 is set inside the sleeve 1, and the threaded holes 10 on the limiting plate 13 correspond to the threaded holes 10 on the sleeve 1. The threaded holes 10 are provided with fixing bolts 4. By tightening the threaded holes 10, the connecting block 3 is fixedly connected to the sleeve 1. The stirring rod 5 is fixedly installed on the mounting shafts 11.
[0027] Working principle:
[0028] The stirring rod 5 is fixedly installed on the connecting block 3. The limiting plate 13 on the connecting block 3 is set inside the sleeve 1. The threaded hole 10 on the limiting plate 13 corresponds to the threaded hole 10 on the sleeve 1. Then, the fixing bolt 4 is set in the threaded hole 10 to realize the fixed connection of the stirring rod 5. The positioning shaft 2 is rotated and set inside the dryer and connected to the drive equipment to realize the installation of the device. The drive equipment is started to drive the positioning shaft to rotate, thereby driving the stirring rod 5 to rotate synchronously, realizing the turning of solid grains such as corn kernels, and working with the dryer to dry the grains.
[0029] Example 2:
[0030] like Figure 2-3 As shown, a turning structure for a grain dryer differs from Embodiment 1 in that the stirring rod 5 is replaced with an arc-shaped plate 7. One end of the arc-shaped plate 7 is fixedly connected to the mounting shaft 11, and the other end is fixedly provided with crushing teeth 8. This embodiment is used for drying powdery grains. During the drying process, the powder clumps together, and the crushing teeth 8 facilitate the crushing of the powder, thus accelerating the drying efficiency. In this embodiment, a connecting plate is welded to the lower end of the arc-shaped plate 7. The connecting plate has a groove that matches the mounting shaft 11, allowing the bottom connecting plate of the arc-shaped plate 7 to correspond with the mounting shaft 11. Then, welding points are set at both ends of the connecting plate and welded to the support plate 12 to reinforce the arc-shaped plate 7. When replacing, the stirring rod 5 and the arc-shaped plate 7 are generally replaced by unscrewing the fixing bolts 4. If necessary, the stirring rod 5 can also be disassembled to install the arc-shaped plate 7. The modular design facilitates the installation, maintenance, and replacement of the turning equipment, improving efficiency and reducing manufacturing costs.
[0031] Working principle:
[0032] The arc-shaped plate 7 is fixedly installed on the connecting block 3. The limiting plate 13 on the connecting block 3 is set inside the sleeve 1. The threaded hole 10 on the limiting plate 13 corresponds to the threaded hole 10 on the sleeve 1. Then, the fixing bolt 4 is set in the threaded hole 10 to realize the fixed connection of the arc-shaped plate 7. The positioning shaft 2 is rotated and set inside the dryer and connected to the drive equipment to realize the installation of the device. The drive equipment is started to drive the positioning shaft to rotate, thereby driving the arc-shaped plate 7 to rotate synchronously. The crushing teeth 8 are conducive to the crushing of powder. The arc-shaped plate 7 realizes the turning of powder, which speeds up the drying efficiency. It realizes the turning of powdery grains such as corn flour and wheat flour, and works with the dryer to realize the drying of grains.
[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0034] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.
Claims
1. A turning structure for a grain dryer, characterized in that, Includes a sleeve (1), a positioning shaft (2) is fixedly installed inside the sleeve (1), a plurality of limiting grooves (9) are opened on the sleeve (1), threaded holes (10) are symmetrically arranged at both ends of the limiting grooves (9), a connecting block (3) is fixedly installed inside the limiting grooves (9), and a stirring rod (5) is fixedly installed on the connecting block (3).
2. The turning structure for a grain dryer according to claim 1, characterized in that, The connecting block (3) includes a mounting shaft (11), a support plate (12), and a limiting plate (13). The mounting shaft (11) is fixedly disposed above the support plate (12), and the limiting plate (13) is fixedly disposed below the support plate (12).
3. The turning structure for a grain dryer according to claim 2, characterized in that, A plurality of mounting shafts (11) are provided, and the mounting shafts (11) are equidistantly arranged on the support plate (12).
4. The turning structure for a grain dryer according to claim 3, characterized in that, The limiting plate (13) has threaded holes (10) symmetrically arranged at both ends. The limiting plate (13) is arranged inside the sleeve (1). The threaded holes (10) on the limiting plate (13) correspond to the threaded holes (10) on the sleeve (1). Fixing bolts (4) are arranged in the threaded holes (10).
5. The turning structure for a grain dryer according to claim 2, characterized in that, An arc-shaped plate (7) is fixedly installed on the connecting block (3).
6. The turning structure for a grain dryer according to claim 5, characterized in that, One end of the arc-shaped plate (7) is fixedly connected to the connecting block (3), and the other end is fixedly provided with a breaking tooth (8).
7. A turning structure for a grain dryer according to claim 6, characterized in that, The lower end of the arc-shaped plate (7) is welded with a connecting plate, which is fixedly connected to the connecting block (3) through the connecting plate.
8. The turning structure for a grain dryer according to claim 1, characterized in that, The sleeve (1) is fixedly connected to the positioning shaft (2) via a pair of flanges (6).
9. A turning structure for a grain dryer according to claim 1, characterized in that, The positioning shaft (2) is rotatably mounted inside the dryer.
10. A turning structure for a grain dryer according to claim 9, characterized in that, The positioning shaft (2) is fixedly connected to the drive device on the dryer.