Automatic flow distributor for grain drying tower
By using an automatic diverter in the box structure to adaptively adjust the grain flow rate, the problem of insufficient utilization of the pre-storage layer volume in the grain drying tower is solved, achieving uniform distribution and stable flow of grain, and improving the operational stability and production efficiency of the drying tower.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG UNIA AGRI MASCH CO LTD
- Filing Date
- 2025-03-05
- Publication Date
- 2026-06-23
AI Technical Summary
The existing grain drying tower's pre-storage layer volume is not fully utilized, and the upper and lower grain levels frequently alarm, affecting the continuity, stability, and production efficiency of the drying tower. Furthermore, there is a fire hazard caused by hot air passing through the hollow corner box.
The automatic diverter with a box-shaped structure includes a hopper, a distribution plate, and a nylon plate. The distribution plate, supported by rolling bearings, achieves adaptive adjustment, automatically balances the grain flow, prevents impurities from clumping, and ensures uniform diversion.
It achieves automatic balance of grain flow, avoids equipment failure, improves the operational stability and production efficiency of the drying tower, ensures uniform distribution and flowability of grain, and reduces manual intervention.
Smart Images

Figure CN224398152U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grain feeding technology in grain drying towers, and in particular to an automatic grain feeder for grain drying towers. Background Technology
[0002] Grain drying refers to the process of removing moisture from grains by controlling conditions such as temperature and humidity, thereby extending the storage time of the grains and preventing mold and fermentation. Different equipment and technologies can be used in the drying process, such as fluidized bed drying, hot air drying, and vacuum drying. Among these, a grain feed distributor is a device used in grain processing and storage. Its main function is to evenly distribute the grain entering the storage or drying equipment into multiple channels or warehouses. By adjusting the opening and angle of the distributor, a consistent grain flow rate can be ensured in each channel, thus avoiding accumulation or uneven distribution. It is commonly used in grain drying towers.
[0003] A grain drying tower is a device that dries grains using a heat source. It removes moisture from the grains quickly with hot air, bringing them to a safe storage state. The drying tower body uses metal inner walls, silicone cotton insulation, and corrugated steel plates or aluminum alloy outer walls. Digital control and monitoring ensure effective control of air circulation, airflow, and hot air temperature. The drying tower has mesh-like perforated inlet and outlet corner boxes on both sides, arranged alternately. Grain flows downwards outside the corner boxes, while the drying medium flows laterally. Hot air enters through the inlet corner boxes, passes through the grain layer vertically, and exhaust gas is discharged through the outlet corner boxes, achieving uniform heating of the grains.
[0004] The area above the top corner box is the grain pre-storage layer, which coordinates the grain inlet and outlet of the drying tower and is crucial to the continuity and stability of the drying tower's operation. To fully utilize the volume of the pre-storage layer, a diverter is usually installed above it. The diverter connects multiple grain inlets of the pre-storage layer through chutes, minimizing the slope of the grain accumulation and thus storing more grain. In practical applications, the diverter's failure can be caused by various factors, including deformation of the top plate of the pre-storage layer over time leading to tilting, changes in grain flow, vibration during equipment operation, and blockage and clumping of impurities inside the diverter. This results in uneven grain intake at each inlet, hollow corner boxes, and a large amount of hot air passing through the hollow corner boxes, posing a fire hazard. Furthermore, the ineffective utilization of the pre-storage layer's volume leads to frequent alarms at the upper and lower grain levels, affecting the continuity, stability, and production efficiency of the drying tower. Therefore, an automatic grain diverter for grain drying towers is proposed to address these issues. Utility Model Content
[0005] To overcome the above deficiencies, this utility model provides an automatic grain feed diverter for a grain drying tower, which aims to improve the problem in the prior art where the pre-storage layer volume cannot be effectively utilized and the upper and lower grain levels frequently alarm, affecting the continuity, stability and production efficiency of the drying tower.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] An automatic feed diverter for a grain drying tower includes a housing, an inlet and outlet assembly fixedly connected to the outside of the housing, a hopper installed on the top inner wall of the housing via threaded fasteners, a pin installed on the inner wall of the housing via a rolling bearing, a distribution plate fixedly connected to the top of the pin, and nylon plates installed on both sides of the top of the distribution plate via threaded fasteners.
[0008] As a further description of the above technical solution:
[0009] The feeding and discharging assembly includes a feed chute, the bottom of which is fixedly connected to the top of the box body, a left feed chute is fixedly connected to the bottom left end of the box body, and a right feed chute is fixedly connected to the bottom right end of the box body.
[0010] As a further description of the above technical solution:
[0011] The front end of the housing is fitted with an inspection cover plate via threaded fasteners.
[0012] This utility model has the following beneficial effects:
[0013] In this invention, an adaptive adjustment mechanism is used to achieve automatic balance of grain flow, effectively ensuring uniform distribution of grain. The distribution plate automatically adjusts according to the flow of the grain column, eliminating the hidden danger of uneven flow, avoiding equipment failure, and ensuring the efficient utilization of the pre-storage layer of the drying tower. At the same time, the nylon plate prevents impurities from clumping, maintains the smooth flow of grain, and ensures the flowability and stability of grain during the process. In addition, the automated adjustment function reduces manual intervention, improves production efficiency, optimizes the operational stability and energy utilization of the drying tower, and provides reliable protection for grain processing. Attached Figure Description
[0014] Figure 1 This is a three-dimensional schematic diagram of an automatic grain feed diverter for a grain drying tower proposed in this utility model;
[0015] Figure 2 This is a schematic diagram of the material collection hopper of an automatic grain feed diverter for a grain drying tower proposed in this utility model;
[0016] Figure 3This is a schematic diagram of the feed chute of an automatic feed diverter for a grain drying tower proposed in this utility model;
[0017] Figure 4 for Figure 3 Enlarged view of point A in the middle.
[0018] Legend:
[0019] 1. Box body; 101. Grain inlet chute; 102. Right grain outlet chute; 103. Left grain outlet chute; 2. Inspection cover plate; 3. Collection hopper; 4. Nylon plate; 5. Distribution plate; 501. Pin shaft. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.
[0021] Reference Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment of an automatic grain diverter for a grain drying tower, comprising a housing 1, with an inlet / outlet assembly fixedly connected to the outside of the housing 1. A collecting hopper 3 is installed on the top inner wall of the housing 1 via threaded fasteners. The function of the collecting hopper 3 is to gather grain into a grain column, ensuring smooth grain flow and providing a stable grain source for subsequent diversion. A pin 501 is installed on the inner wall of the housing 1 via rolling bearings. A diverting plate 5 is fixedly connected to the top of the pin 501. With the support of the rolling bearings, the pin 501 allows the diverting plate 5 to rotate freely to adapt to uneven grain flow. Nylon plates 4 are installed on both sides of the top of the diverting plate 5 via threaded fasteners. The nylon plates 4 prevent impurities from clumping during the diversion process, ensuring that the grain can pass smoothly and maintain its fluidity.
[0022] refer to Figure 1 and Figure 2The feeding and discharging components include a grain inlet chute 101, the bottom of which is fixedly connected to the top of the housing 1. The grain inlet chute 101 is the channel through which grain enters the distributor. After being fed in by the elevator, the grain flows smoothly to the collection hopper 3. A left grain outlet chute 103 is fixedly connected to the bottom left end of the housing 1, and a right grain outlet chute 102 is fixedly connected to the bottom right end of the housing 1. The design of the left grain outlet chute 103 and the right grain outlet chute 102 on both sides ensures that the grain can be evenly distributed to each position, avoiding too much or too little on one side, which would affect the distribution effect. A maintenance cover 2 is installed at the front end of the housing 1 by threaded fasteners. The maintenance cover 2 provides convenience for daily maintenance and ensures the normal operation of the distributor, preventing malfunctions due to long-term use.
[0023] Working Principle: Grain is fed into the feed chute 101 of the distributor via an elevator. Inside the chute, the grain flows smoothly to the collecting hopper 3. The collecting hopper 3 collects the grain to form a grain column. This column falls freely under gravity and is guided by the vertical plate of the distribution plate 5. The distribution plate 5 distributes the grain column onto the nylon plates 4 installed on both sides. When the grain flow rate on the two nylon plates 4 is uneven, the gravity acting on them will also be different, causing the distribution plate 5 to shift. At this time, the distribution plate 5, supported by rolling bearings, adaptively adjusts, swinging left or right to balance the grain flow. The vertical plate of the distribution plate 5 shifts accordingly. During the adjustment process, it is ensured that the grain flow rate on the two nylon plates 4 is the same. This process is automatic and requires no manual intervention. When the grain flow rate changes, the box 1 will vibrate or tilt, which will affect the position of the distribution plate 5. Regardless of changes in the external environment, the distribution plate 5 will activate the adaptive adjustment function to continue to maintain the balance of grain flow on both sides. The nylon plate 4 plays a role in preventing impurities from clumping during this process, ensuring that the grain can pass through smoothly and maintain its fluidity. Ultimately, the distributor can achieve the purpose of automatic flow division. Through the adaptive adjustment mechanism, it ensures the uniform distribution of grain, guarantees the effective utilization of the pre-storage layer of the drying tower, avoids equipment failures caused by flow imbalance, such as the problem of voids in the corner box, thereby improving production efficiency and ensuring the stable operation of the drying tower.
[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An automatic feed diverter for a grain drying tower, comprising a housing (1), characterized in that: The box (1) is fixedly connected to the outside of the inlet and outlet assembly. The top inner wall of the box (1) is fitted with a hopper (3) by threaded fasteners. The inner wall of the box (1) is fitted with a pin (501) by rolling bearings. The top of the pin (501) is fixedly connected with a distribution plate (5). Both sides of the top of the distribution plate (5) are fitted with nylon plates (4) by threaded fasteners.
2. The automatic grain feed diverter for a grain drying tower according to claim 1, characterized in that: The feeding and discharging assembly includes a feed chute (101), the bottom of which is fixedly connected to the top of the box (1), a left feed chute (103) is fixedly connected to the bottom left end of the box (1), and a right feed chute (102) is fixedly connected to the bottom right end of the box (1).
3. The automatic grain feed diverter for a grain drying tower according to claim 1, characterized in that: The front end of the housing (1) is fitted with an inspection cover (2) via threaded fasteners.