Ventilation system for stacking area of finished rice building warehouse

Abstract

The utility model discloses a ventilation system of a stacking area of a finished rice building warehouse, which comprises a ventilation unit, a monitoring unit and a control unit, the ventilation unit comprises a cold air unit and a plenum chamber which are connected through a cold air supply pipeline, and air supply outlets communicated with the plenum chamber are arranged on a floor of the stacking area at intervals. Air return ports are formed in the top wall of the stacking area, and each air return port is connected with an air inlet of the cooling unit through an air return pipeline; a monitoring unit is arranged on the upper portion of each finished rice stack and comprises a humidity sensor and a temperature sensor. The humidity sensor is used for monitoring the air humidity near the rice stack, the temperature sensor is used for monitoring the air temperature near the rice stack, the air speed sensor is used for monitoring the air speed near the rice stack, the sensors transmit detected signals to the control unit, and the control unit can control starting and stopping of the cooling unit. Therefore, automatic monitoring and automatic ventilation are achieved, and the storage quality of rice is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of finished rice storage, and in particular to a ventilation system for the stacking area of ​​finished rice warehouses. Background Technology

[0002] Multi-story rice warehouses are a new type of grain storage facility developed due to land scarcity. These warehouses offer advantages such as small footprint and high space utilization, making them highly advantageous and promising for densely populated cities with limited land resources. However, during summer storage, as temperatures rise, the temperature inside the multi-story rice warehouse and the temperature of the grain bags also gradually increase, leading to quality deterioration, flavor degradation, and even spoilage of the rice, rendering it inedible. Therefore, it is crucial to ensure proper ventilation in the stacking area of ​​the multi-story rice warehouse during storage to maintain controlled temperature and humidity, preventing mold growth and moisture loss.

[0003] There are two main methods for ventilation in existing multi-story rice warehouses. One method uses the traditional ventilation system of flat warehouses, such as bottom supply and side return, top supply and bottom return, and side supply and top return. However, directly applying the ventilation methods of flat warehouses to multi-story rice warehouses does not achieve the desired ventilation effect. The other method utilizes cold storage air conditioning units, employing a top supply and bottom return system. However, the stacking of rice bales differs from the distributed shelving in cold storage. Due to the mutual obstruction of stacked rice bales, it is difficult to achieve uniform airflow distribution. Usually, after a period of operation, improvements and supplementary measures, such as manually placing mobile fans, are needed based on on-site temperature measurements to ensure that bales in different locations achieve the same cooling effect. Summary of the Invention

[0004] In view of this, this utility model proposes a ventilation system for the stacking area of ​​finished rice warehouses.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The ventilation system for the finished rice stacking area of ​​this utility model includes a ventilation unit, a monitoring unit, and a control unit. The ventilation unit includes a cold air unit and a static pressure box connected by a cold air supply duct. The static pressure box is located below the stacking area. Multiple air supply outlets communicating with the static pressure box are spaced apart on the floor of the stacking area. Return air inlets are provided on the top wall of the stacking area. Each return air inlet is connected to the air inlet of the cold air unit through a return air duct. A monitoring unit is installed on the upper part of each finished rice stack. The monitoring unit includes a humidity sensor for monitoring humidity and a temperature sensor for monitoring temperature. The signal output terminals of the humidity sensor and the temperature sensor are connected to the signal input terminal of the control unit. The control output terminal of the control unit is connected to the control input terminal of the cold air unit.

[0007] The beneficial effects are: This utility model uses a humidity sensor to monitor the air humidity near the rice stack, a temperature sensor to monitor the air temperature near the rice stack, and a wind speed sensor to monitor the wind speed near the rice stack. The sensors transmit the detected signals to the control unit, which can control the start and stop of the air cooler unit, thereby realizing automatic monitoring and automatic ventilation to ensure the storage quality of rice.

[0008] Preferably, the air outlets are located between the rice stacks, and each air outlet is equipped with an electric valve. The control input of each electric valve is connected to the control output of the control unit. The beneficial effect is that this invention utilizes the control unit to adjust the opening of the electric valves, thereby regulating the airflow speed at each air outlet, further regulating the ventilation volume within the storage room, and ensuring the quality of the rice.

[0009] Preferably, the monitoring unit is installed at two-thirds or more of the height of the rice stack. In actual installation, this invention installs the monitoring unit in the upper middle part of the rice stack, which can monitor the temperature and humidity of the upper middle part of the rice stack in real time. The control unit controls the automatic ventilation of the air cooling unit to prevent the rice stack from overheating, further ensuring the quality of the rice during storage and preventing moisture loss or mold.

[0010] Compared with existing technologies, the advantages of this invention are as follows: This invention utilizes a humidity sensor to monitor the air humidity near the rice stack, a temperature sensor to monitor the air temperature near the rice stack, and a wind speed sensor to monitor the wind speed near the rice stack. The sensors transmit the detected signals to the control unit, which can control the start and stop of the air cooler unit, thereby achieving automatic monitoring and automatic ventilation to ensure the storage quality of the rice. This invention installs a static pressure box at the bottom of the rice stack. The cold air from the air cooler unit enters the static pressure box through the cold air supply duct, and then enters the rice stack through the air outlet. The return air enters the air cooler unit again through the return air outlet and return air duct, reducing the operating energy consumption of the air cooler unit. In addition, the air supply area of ​​each air outlet can reach more than 10 meters, ensuring the ventilation effect of the rice stack area. Attached Figure Description

[0011] Figure 1 This is a frontal view of the present invention.

[0012] Figure 2 This is a plan view of the present invention.

[0013] Figure 3 This is a circuit block diagram of this utility model. Detailed Implementation

[0014] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific operation processes. However, the protection scope of this utility model is not limited to the following embodiments.

[0015] It should be noted that in the description of this utility model, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0016] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "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; 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.

[0017] like Figure 1-3 As shown, the ventilation system for the finished rice stacking area of ​​this utility model includes a ventilation unit, a monitoring unit, and a control unit. The ventilation unit includes a cold air unit 2 and a static pressure box 3 connected by a cold air supply duct 1. The static pressure box 3 is located below the stacking area. Multiple air supply outlets 4 connected to the static pressure box 3 are spaced apart on the floor of the stacking area. Return air inlets 5 are provided on the top wall of the stacking area. Each return air inlet 5 is connected to the air inlet of the cold air unit 2 through a return air duct. A return air inlet 5 is installed on the top wall between two adjacent air supply outlets 4. In this utility model, the static pressure box 3 is installed at the bottom of the rice stacks 6. The cold air from the cold air unit 2 enters the static pressure box 3 through the cold air supply duct 1, and then enters the rice stacks 6 through the air supply outlets 4. The return air enters the cold air unit 2 again from the return air inlet 5 through the return air duct, reducing the operating energy consumption of the cold air unit 2. In addition, the air supply area of ​​each air supply outlet 4 can reach more than 10 meters, ensuring the ventilation effect of the stacking area.

[0018] Each finished rice stack 6 is equipped with a monitoring unit on its upper part. The monitoring unit includes a humidity sensor 7 for monitoring humidity and a temperature sensor 8 for monitoring temperature. The signal output terminals of the humidity sensor 7 and the temperature sensor 8 are connected to the signal input terminal of the control unit. The control output terminal of the control unit is connected to the control input terminal of the air cooler unit 2. During operation, this invention uses the humidity sensor 7 to monitor the air humidity near the rice stack 6 and the temperature sensor 8 to monitor the air temperature near the rice stack 6. The sensors transmit the detected signals to the control unit, which controls the start and stop of the air cooler unit 2 based on the temperature and humidity. The air cooler unit is a variable frequency unit, which can achieve different airflow rates according to the temperature and humidity.

[0019] In actual installation, the air inlets 4 are located between the rice stacks 6, and the control input of the electric valve at each air inlet 4 is connected to the control output of the control unit. During operation, the control unit adjusts the opening of the electric valve, thereby regulating the airflow speed at each air inlet 4, and further regulating the ventilation volume in the storage room to ensure the quality of the rice. A return air inlet 5 is installed between two adjacent air inlets 4.

[0020] During actual storage, the upper part of the rice stack 6 is prone to temperature rise. To improve monitoring accuracy, this invention installs a monitoring unit at two-thirds of the height of each rice stack 6 to monitor the temperature and humidity of the upper part of the rice stack 6, preventing temperature rise or excessive humidity and ensuring rice quality.

[0021] During storage, the optimal storage temperature for the finished rice stacking area is 5–20℃, and the optimal storage humidity is controlled at 60%–70%. The stacking area can be divided into multiple zones (four in this invention), and multiple monitoring units can be installed in each zone to monitor the temperature and humidity of each zone in real time. If the temperature and humidity of the stacking area are close to the preset range, the air cooler unit 2 will turn on the low air volume mode to ventilate the stacking area until both the humidity and temperature are within the preset range. When the temperature and humidity of more than half of the rice stacks 6 far exceed the preset range, the air cooler unit 2 will turn on the maximum air supply mode. As the temperature and humidity get closer to the preset range, the air supply volume of the air cooler unit 2 can be appropriately reduced, and the opening of each air outlet 4 can be adjusted to achieve flexible adjustment of the air supply volume.

[0022] In actual installation, the controller in the control unit of this utility model can be a general-purpose processor, a special-purpose processor, a conventional processor, a digital signal processor (DSP), multiple microprocessors, one or more microprocessors associated with the DSP core, a controller, a microcontroller, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) circuit, any other type of integrated circuit (IC), a state machine, or a PLC, etc.

[0023] In addition, the aforementioned controller can also be an industrial PC, which possesses important computer attributes and characteristics, such as a CPU, hard disk, memory, peripherals and interfaces, as well as an operating system, control network and protocols, computing power, and a user-friendly human-machine interface. Furthermore, the controller is equipped with a wireless communication module to connect with a remote terminal, receive control commands from the remote terminal, and also provide feedback on relevant parameters of the real-time operating status.

[0024] Finally, it should be emphasized that the above description is merely a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Therefore, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A ventilation system for a finished rice storage area in a multi-story warehouse, comprising a ventilation unit, characterized in that: It also includes a monitoring unit and a control unit; the ventilation unit includes a cold air unit and a static pressure box connected by a cold air supply duct. The static pressure box is located below the stacking area. Multiple air supply outlets communicating with the static pressure box are spaced apart on the floor of the stacking area. Return air inlets are opened on the top wall of the stacking area. Each return air inlet is connected to the air inlet of the cold air unit through a return air duct. A monitoring unit is installed on the top of each finished rice stack. The monitoring unit includes a humidity sensor for monitoring humidity and a temperature sensor for monitoring temperature. The signal output terminals of the humidity sensor and the temperature sensor are connected to the signal input terminal of the control unit. The control output terminal of the control unit is connected to the control input terminal of the cold air unit.

2. The ventilation system for the finished rice storage area in a multi-story warehouse according to claim 1, characterized in that: The air supply outlets are located between the rice stacks, and the control input terminal of the electric valve at each air supply outlet is connected to the control output terminal of the control unit; a return air outlet is installed between two adjacent air supply outlets.

3. The ventilation system for the finished rice storage area in a multi-story warehouse according to claim 1, characterized in that: The monitoring unit is installed at two-thirds or more of the height of the rice stack.

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