Rice circulating cooling bin

Abstract

The utility model discloses a rice circulation cooling bin relates to rice processing technical field, including base, install the rice storage cylinder for storing rice on the base, the inner top wall of rice storage cylinder is installed with a plurality of inner cylinder, is provided with the gap groove on the outer wall of inner cylinder upper portion, the inside rotation of inner cylinder is installed with hollow rotating shaft, the outer wall of hollow rotating shaft is installed with spiral conveying vane, rice storage cylinder top installs the drive mechanism of driving a plurality of hollow rotating shaft synchronous rotation, the top of rice storage cylinder still is installed with air pump, and the air outlet end of air pump is communicated with hollow rotating shaft through the connecting pipeline, and the outer wall of hollow rotating shaft is opened with the air outlet hole. The utility model solves the defect that the natural air drying is only surface cooling, and the internal humid heat is accumulated, and the cooling efficiency is improved while guaranteeing the cooling uniformity, and the whole structure is integrated, and the rice is not needed to be piled up in large quantities in a large number of sites, and the space utilization is improved, and the site cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of rice processing technology, specifically to a rice circulating cooling chamber. Background Technology

[0002] In large-scale rice processing, the rice milling process generates a large amount of heat due to mechanical friction and extrusion, raising the rice temperature to 40℃-60℃. If this high-temperature rice directly enters the polishing stage, it will cause the grains to break easily, increasing the breakage rate and reducing the grade and economic value of the finished rice. At the same time, the starch on the rice surface is prone to gelatinization, forming an irregular gelatinous layer, which affects the appearance, color, and gloss.

[0003] In addition, the residual heat and moisture from high-temperature rice will create a warm and humid environment inside the rice pile, which is very easy for pests such as rice weevils and grain borers, as well as aflatoxin-producing bacteria, to breed. This will destroy nutrients, produce harmful substances, threaten food safety, and cause food waste.

[0004] Currently, the industry mostly uses the method of stacking bags for natural air drying and cooling, which involves packing rice into bags and stacking them up, relying on natural airflow to dissipate heat. However, this method depends on environmental conditions, is slow to cool down, has a long cycle, and is inefficient, making it unable to meet the needs of continuous large-scale production. Poor ventilation inside the rice pile leads to uneven cooling, and there is still a risk of insects and mold. Existing cooling methods have problems such as low efficiency, poor space utilization, uneven cooling, and high quality risks, which restrict the development of the industry.

[0005] In view of the above, this application is hereby submitted. Utility Model Content

[0006] The purpose of this invention is to provide a rice circulating cooling chamber to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, this utility model provides a rice circulating cooling chamber, including a base, on which a rice storage cylinder for storing rice is installed. Multiple inner cylinders are installed on the inner top wall of the rice storage cylinder. A notch is provided on the outer wall of the upper part of each inner cylinder. A hollow rotating shaft is rotatably installed inside each inner cylinder. Spiral conveying blades are installed on the outer wall of the hollow rotating shaft. A drive mechanism for synchronously rotating the multiple hollow rotating shafts is installed on the top of the rice storage cylinder. An air pump is also installed on the top of the rice storage cylinder. The air outlet of the air pump is connected to the hollow rotating shaft via a connecting pipe. An air outlet hole is provided on the outer wall of the hollow rotating shaft.

[0008] Furthermore, the top of the rice storage cylinder is provided with a feed pipe communicating with its inner cavity, and the bottom of the rice storage cylinder is provided with a discharge pipe communicating with its inner cavity, and a valve is provided on the discharge pipe.

[0009] Furthermore, the rice storage cylinder is a hollow cylindrical structure, and the wall of the rice storage cylinder is composed of multiple perforated plates joined together.

[0010] Furthermore, the driving mechanism includes a driving motor mounted on the top of the rice storage cylinder, the rice storage cylinder having a cavity, the driving end of the driving motor extending into the cavity and connected to a driving gear, the top end of the hollow rotating shaft extending into the drive motor and connected to a driven gear, the driven gear meshing with the driving gear.

[0011] Furthermore, the connecting pipeline includes an air outlet pipe connected to the air outlet end of the air pump, and multiple distribution pipes are installed on the air outlet pipe. The distribution pipes are inserted into the interior of the hollow rotating shaft from the top end port of the hollow rotating shaft.

[0012] Furthermore, multiple air outlets are provided, and the multiple air outlets are equidistantly arranged along the axial direction of the hollow rotation axis.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, the driving mechanism drives the hollow rotating shaft to rotate synchronously. The spiral conveying blades on its outer wall agitate the rice to prevent it from piling up, and lift the rice from the bottom to the top, so that the rice forms a complete circulation trajectory in the rice storage cylinder. At the same time, the air pump delivers airflow to the hollow rotating shaft through the connecting pipeline. The airflow covers the circulating rice through equidistant air outlets. Combined with the exhaust function of the mesh plate of the rice storage cylinder, a highly efficient airflow circulation is formed. This design allows the rice to fully contact the airflow, greatly improving the cooling efficiency and eliminating cooling dead zones. This avoids the risk of insect infestation and mold caused by local high temperatures. At the same time, it reduces the breakage rate and improves the appearance for subsequent polishing, ensuring the quality of rice processing.

[0014] 2. In this utility model, the feed pipe at the top of the rice storage cylinder can be directly connected to the production line to input high-temperature rice, and the discharge pipe with a valve at the bottom can flexibly control the output of rice after cooling. Combined with the continuous circulation cooling function of the spiral conveyor blades, the feeding, cooling and discharge are seamlessly connected, eliminating the need for repeated bag loading and unloading in traditional air drying, and meeting the efficiency requirements of large-scale production. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the left-side structure of this utility model; Figure 2 This is a schematic diagram of the right-side structure of this utility model; Figure 3 This is a front view structural diagram of the present utility model; Figure 4 This is a cross-sectional structural diagram of the present invention.

[0016] In the diagram: 1. Base; 2. Rice storage container; 3. Feed pipe; 4. Discharge pipe; 5. Inner cylinder; 6. Notched groove; 7. Hollow rotating shaft; 8. Spiral conveyor blades; 9. Air outlet; 10. Cavity; 11. Drive motor; 12. Drive gear; 13. Driven gear; 14. Air pump; 15. Air outlet pipe; 16. Distribution pipe. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-4 This utility model provides a technical solution: a rice circulating cooling chamber, including a base 1, on which a rice storage cylinder 2 for storing rice is installed. Multiple inner cylinders 5 are installed on the inner top wall of the rice storage cylinder 2. A notch 6 is provided on the outer wall of the upper part of the inner cylinder 5. A hollow rotating shaft 7 is rotatably installed inside the inner cylinder 5. A spiral conveying blade 8 is installed on the outer wall of the hollow rotating shaft 7. A drive mechanism for driving the multiple hollow rotating shafts 7 to rotate synchronously is installed on the top of the rice storage cylinder 2. An air pump 14 is also installed on the top of the rice storage cylinder 2. The air outlet of the air pump 14 is connected to the hollow rotating shaft 7 through a connecting pipe. An air outlet 9 is opened on the outer wall of the hollow rotating shaft 7.

[0019] Specifically, the rice storage cylinder 2 is fixed to the base 1 for support. Multiple inner cylinders 5 installed on the top wall of the rice storage cylinder 2 provide a rotating mounting carrier for the hollow rotating shaft 7. After the equipment is started, the drive mechanism drives the hollow rotating shaft 7 to rotate within the inner cylinders. Simultaneously, the spiral conveying blades 8 on its outer wall rotate synchronously, agitating the rice inside the rice storage cylinder 2, breaking up the pile, and lifting the rice from the bottom to the top. At the same time, the air pump 14 at the top of the rice storage cylinder 2 delivers airflow to the hollow rotating shaft 7 through connecting pipes. The airflow is discharged through the air outlet 9 on the outer wall of the hollow rotating shaft 7, directly acting on the circulating rice to remove heat and moisture. The notch 6 at the top of the inner cylinder 5 helps guide the rice into the inner cylinder 5, ensuring full contact with the spiral conveying blades 8 and guaranteeing smooth circulation.

[0020] As a technical optimization of this utility model, the top of the rice storage cylinder 2 is provided with a feed pipe 3 communicating with its inner cavity, and the bottom of the rice storage cylinder 2 is provided with a discharge pipe 4 communicating with its inner cavity, and a valve is provided on the discharge pipe 4.

[0021] Specifically, the feed pipe 3 at the top of the rice storage cylinder 2 is directly connected to the rice processing production line, which transports the high-temperature rice after milling to the inside of the rice storage cylinder 2. At this time, the valve on the discharge pipe 4 is closed, and the rice is cooled down in the rice storage cylinder 2 by the circulation and stirring of the spiral conveyor blades 8 and the heat exchange with the airflow. When the rice temperature drops to the required level, the valve on the discharge pipe 4 is opened, and the cooled rice is stably discharged through the discharge pipe 4.

[0022] As a technical optimization of this utility model, the rice storage cylinder 2 is a hollow cylindrical structure, and the wall of the rice storage cylinder 2 is composed of multiple mesh plates joined together.

[0023] Specifically, during the cooling process, the spiral conveyor blades 8 drive the rice to circulate, and the airflow delivered by the air pump 14 exchanges heat with the rice through the air outlet 9. The exhaust gas carrying heat and moisture is then discharged outside the warehouse through the mesh of the mesh plate.

[0024] As a technical optimization of this utility model, the driving mechanism includes a driving motor 11 installed on the top of the rice storage cylinder 2. A cavity 10 is opened on the rice storage cylinder 2. The driving end of the driving motor 11 extends into the cavity 10 and is connected to the driving gear 12. The top end of the hollow rotating shaft 7 extends into the drive motor 11 and is connected to the driven gear 13. The driven gear 13 meshes with the driving gear 12.

[0025] Specifically, the drive motor 11 at the top of the rice storage cylinder 2 operates, and its drive end extends into the cavity 10 of the rice storage cylinder 2 and drives the drive gear 12 to rotate. Since the drive gear 12 meshes with the driven gear 13 at the top of the hollow rotating shaft 7, and multiple hollow rotating shafts 7 are correspondingly connected to the driven gears 13, the rotation of the drive gear 12 synchronously drives the hollow rotating shafts 7 to rotate at a uniform speed, ensuring that the spiral conveying blades 8 on each hollow rotating shaft 7 rotate at the same speed, so that the rice in different areas of the rice storage cylinder 2 can be stirred and lifted from the bottom to the top synchronously, avoiding local rice circulation that is too fast or too slow due to speed differences, and ensuring the overall circulation rhythm is stable.

[0026] As a technical optimization of this utility model, the connecting pipeline includes an air outlet pipe 15 connected to the air outlet end of the air pump 14. Multiple distribution pipes 16 are installed on the air outlet pipe 15. The distribution pipes 16 are inserted into the hollow rotating shaft 7 from the top end port of the hollow rotating shaft 7.

[0027] Specifically, the air outlet pipe 15 connected to the air outlet end of the air pump 14 provides the main delivery channel for the airflow. Multiple distribution pipes 16 on the air outlet pipe 15 correspond one-to-one with the hollow rotating shaft 7, and the distribution pipes 16 are inserted into the hollow rotating shaft 7 from the top end port. The airflow generated by the air pump 14 first enters the air outlet pipe 15, and then is distributed to each distribution pipe 16 through the air outlet pipe 15, and finally evenly delivered to each hollow rotating shaft 7. When the hollow rotating shaft 7 drives the spiral conveying blades 8 to lift the bottom rice to the top, the airflow inside the shaft is discharged from the top to the bottom through the air outlet 9, acting on the circulating rice at different heights, realizing precise distribution and full coverage of the airflow.

[0028] As a technical optimization of this utility model, multiple air outlets 9 are provided, and the multiple air outlets 9 are equidistantly arranged along the hollow rotating shaft 7.

[0029] Specifically, when airflow is introduced into the hollow rotating shaft 7 and the spiral conveying blades 8 drive the rice to circulate from the bottom to the top, the equidistantly distributed air outlets 9 exhaust air evenly from the bottom to the top of the shaft. The airflow can act on the bottom rice that is lifted, the rice flowing in the middle, and the newly mixed rice at the top, respectively, so as to achieve airflow coverage of rice in the circulation trajectory and avoid local rice not having airflow contact due to uneven distribution of air outlets 9.

[0030] The specific working principle of this rice circulating cooling chamber is as follows: First, after starting the equipment, the high-temperature rice produced after the rice milling process is directly conveyed into the rice storage cylinder 2 through the feed pipe 3 at the top of the rice storage cylinder 2. At this time, the discharge pipe 4 at the bottom of the rice storage cylinder 2 is in the closed valve state, ensuring that the rice is temporarily stored in the storage cylinder, allowing sufficient time for subsequent cooling operations. Next, the drive mechanism and the air pump 14 start synchronously, entering the core cooling stage. On one side of the drive mechanism, the drive motor 11 installed on the top of the rice storage cylinder 2 operates, and its drive end extends into the cavity 10 of the rice storage cylinder 2 and drives the drive gear 12 to rotate. Since the drive gear 12 meshes with the driven gear 13 at the top of the hollow rotating shaft 7, and multiple hollow rotating shafts 7 are respectively rotatably installed in the corresponding inner cylinder 5 on the inner top wall of the rice storage cylinder 2, the rotation of the drive gear 12 will synchronously drive the hollow rotating shaft 7 to rotate at a uniform speed. The spiral conveying blades 8 on the outer wall of the hollow rotating shaft 7 rotate synchronously with the shaft, playing a dual key role in this process: on the one hand, the spiral conveying blades 8 continuously stir the rice in the rice storage cylinder 2, breaking the local accumulation state that the rice is prone to form, and avoiding the cooling dead zone where the airflow cannot penetrate in the accumulation area; on the other hand, the spiral conveying blades 8 use the conveying characteristics of the spiral structure to slowly lift the rice at the bottom of the rice storage cylinder 2 to the top, so that the rice forms a natural falling circulation trajectory in the rice storage cylinder 2, so that the rice in the storage cylinder 2 is evenly distributed. The rice storage cylinder 2 is in dynamic motion, creating conditions for full contact with the airflow. Simultaneously, the notch 6 on the upper outer wall of the inner cylinder 5 helps guide the rice into the inner cylinder 5, ensuring full contact with the spiral conveying blades 8 and smoother circulation. This prevents rice from stagnating in the gap between the cylinder wall and the inner cylinder 5. In the airflow and heat exchange stage, the ambient temperature airflow generated by the air pump 14 at the top of the rice storage cylinder 2 is transported to the interior of each hollow rotating shaft 7 through connecting pipes. The airflow first enters the outlet pipe 15 connected to the outlet end of the air pump 14, and then... Multiple distribution pipes 16 on the vent pipe 15 evenly distribute the air to each hollow rotating shaft 7. Since the outer wall of the hollow rotating shaft 7 has multiple vent holes 9 equidistantly arranged along the axial direction, the airflow entering the shaft will be evenly discharged through these vent holes 9, directly acting on the circulating rice driven by the spiral conveyor blades 8. From the newly mixed rice at the top, to the rice in the middle during the lifting process, and then to the rice that is about to be conveyed to the bottom, the airflow can cover and fully contact the rice throughout the process, quickly removing the heat and moisture from the surface and inside of the rice. In addition, the rice storage cylinder 2 adopts a cylindrical structure with multiple perforated plates joined together on the wall. This structure not only adapts to the lifting trajectory of the spiral conveyor blades 8, reducing the flow resistance of the rice, but also allows the exhaust gas carrying heat and moisture to be discharged from the storage chamber in a timely manner through the mesh of the perforated plates. This complete airflow circulation prevents the accumulation of hot and humid air in the storage chamber, further enhancing the cooling effect. Finally, after the rice has undergone multiple circulations and airflow heat exchange in the rice storage cylinder 2, and the temperature has dropped to meet the requirements of subsequent polishing, the valve on the discharge pipe 4 is opened, and the cooled rice is stably discharged through the discharge pipe 4 to enter the next processing stage, thus completing the entire cooling process.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A rice circulating cooling chamber, comprising a base (1), on which a rice storage container (2) for storing rice is installed, characterized in that: The inner top wall of the rice storage cylinder (2) is equipped with multiple inner cylinders (5). The outer wall of the upper part of the inner cylinder (5) is provided with a notch (6). A hollow rotating shaft (7) is rotatably installed inside the inner cylinder (5). A spiral conveying blade (8) is installed on the outer wall of the hollow rotating shaft (7). A drive mechanism for driving multiple hollow rotating shafts (7) to rotate synchronously is installed on the top of the rice storage cylinder (2). An air pump (14) is also installed on the top of the rice storage cylinder (2). The air outlet of the air pump (14) is connected to the hollow rotating shaft (7) through a connecting pipe. An air outlet hole (9) is opened on the outer wall of the hollow rotating shaft (7).

2. The rice circulating cooling chamber as described in claim 1, characterized in that: The rice storage cylinder (2) is provided with a feed pipe (3) communicating with its inner cavity at the top, and a discharge pipe (4) communicating with its inner cavity is installed at the bottom of the rice storage cylinder (2), and a valve is provided on the discharge pipe (4).

3. The rice circulating cooling chamber as described in claim 1, characterized in that: The rice storage cylinder (2) is a hollow cylindrical structure, and the wall of the rice storage cylinder (2) is composed of multiple perforated plates joined together.

4. The rice circulating cooling chamber as described in claim 1, characterized in that: The driving mechanism includes a drive motor (11) installed on the top of the rice storage cylinder (2). The rice storage cylinder (2) has a cavity (10). The drive end of the drive motor (11) extends into the cavity (10) and is connected to a drive gear (12). The top end of the hollow rotating shaft (7) extends into the drive motor (11) and is connected to a driven gear (13). The driven gear (13) meshes with the drive gear (12).

5. The rice circulating cooling chamber as described in claim 1, characterized in that: The connecting pipeline includes an air outlet pipe (15) connected to the air outlet end of the air pump (14). Multiple distribution pipes (16) are installed on the air outlet pipe (15). The distribution pipes (16) are inserted into the hollow rotating shaft (7) from the top end port of the hollow rotating shaft (7).

6. The rice circulating cooling chamber as described in claim 1, characterized in that: The air outlet (9) is provided in multiple ways, and the multiple air outlets (9) are equidistantly arranged along the axial direction of the hollow rotating shaft (7).

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