A rice cooling device for rice processing

Abstract

The utility model relates to a rice processing is with cool rice device, including the first bin body of inside hollow, the inside arrangement of first bin body has cool rice bin subassembly, cool rice bin subassembly includes several second bin bodies, the top of single second bin body is provided with the air intake, single air intake is connected with the air inlet of air guide fan through the air suction pipe group, the bottom of single second bin body is provided with several micropore, the first bin body is equipped with refrigerating unit in, through refrigerating unit to blow into the cold air in first bin body, the cold air enters the inside corresponding second bin body through the micropore, simultaneously, the air guide fan extracts the air in each second bin body through the air suction pipe group, to form the airflow flowing from bottom to top in each second bin body inside. Can effectively even the temperature distribution gradient in second bin body inside, avoid its inside to produce the condensed water, thereby reduce broken rice, reduce the grain loss in processing process, improve product quality.

Description

Technical Field

[0001] This utility model relates to the field of rice processing technology, and in particular to a rice cooling device for rice processing. Background Technology

[0002] The rice cooling step is one of the core steps in paddy processing, usually placed after milling and before polishing. After milling, the white rice is sieved to remove small broken grains and then temporarily stored in a warehouse. Once the rice temperature has dropped to room temperature, it enters the polishing stage to improve its gloss. By setting a rice cooling step, the temperature of the white rice after milling can be reduced, thereby improving the quality of rice processing, ensuring polishing precision, and reducing the breakage rate.

[0003] In existing technologies, the rice cooling device is the core equipment used in the rice cooling process. Traditional rice cooling devices employ either mechanical or natural ventilation for cooling. Mechanical ventilation is based on a sealed steel plate silo, equipped with a ring-shaped air duct, ventilation fan, and air valves. The fan draws ambient air through the duct to the rice layer. Natural ventilation is based on a perforated plate silo or a sealed steel plate silo, with vertically distributed perforated air ducts, relying on the temperature difference between the inside and outside of the silo to create airflow. However, traditional rice cooling devices have a large internal volume, resulting in significant differences in airflow gradients and uneven temperature distribution within the silo. This leads to an imbalance in rice grain stress distribution, increased broken rice rate, and consequently, increased grain loss during processing, hindering grain conservation, loss reduction, and energy saving. Furthermore, the uneven temperature distribution within the silo easily causes condensation, reducing the freshness of the rice, affecting the polishing quality of the rice grains, and ultimately lowering the overall product quality. Utility Model Content

[0004] Therefore, it is necessary to provide a rice cooling device for rice processing to address the problems of uneven internal temperature distribution, easy condensation, and poor product quality caused by external environmental interference in existing rice cooling devices.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A rice cooling device for rice processing includes a hollow first chamber, a rice cooling chamber assembly arranged inside the first chamber, the rice cooling chamber assembly including several second chambers, a single second chamber having an air intake at the top, a single air intake being connected to the air inlet of an exhaust fan through an air intake pipe assembly, a single second chamber having several micro-holes at the bottom, and a refrigeration unit being arranged inside the first chamber.

[0007] Cold air is blown into the first chamber by a refrigeration unit, and the cold air enters the corresponding second chamber through micropores. At the same time, the exhaust fan draws air from the inside of each second chamber through the suction pipe assembly, thereby forming an airflow from bottom to top inside each second chamber.

[0008] As a further improvement to the above technical solution:

[0009] The rice cooling bin assembly is supported by mounting brackets.

[0010] The structure of a single second compartment is as follows: it includes a cylindrical part, and a lower conical part is fitted to the bottom of the cylindrical part. The internal space of the lower conical part is connected to the internal space of the cylindrical part, thereby forming a storage space for storing white rice.

[0011] The lower cone portion uses a perforated plate, thereby forming micropores distributed in an array on the side wall surface of the lower cone portion.

[0012] The diameter of a single micropore is smaller than the average short diameter of a single grain of white rice.

[0013] For a single second compartment, several air inlets are also provided on the side wall of the lower cone, which are distributed in a ring. The air inlets are connected to the air outlets of the ventilation module. The ventilation module is arranged inside the first compartment and blows air into the corresponding accommodating space to ventilate and cool the rice in the accommodating space.

[0014] The structure of the ventilation module is as follows: it includes a centrifugal fan arranged in the first chamber, the air inlet of the centrifugal fan is connected to the air inlet pipe, the air outlet of the centrifugal fan is connected to the main air supply pipe group, and several annular air supply pipes are installed on the main air supply pipe group. The annular air supply pipes are arranged one-to-one with the lower cone, and several air outlets are provided on a single annular air supply pipe. The air outlets on a single annular air supply pipe are connected one-to-one with the air inlets on the corresponding lower cone.

[0015] The centrifugal fan draws air from the first chamber through the air inlet pipe, and under the guidance of the main air supply pipe group, blows it into the corresponding accommodating space through each annular air supply pipe.

[0016] The air volume of the refrigeration unit is greater than the air volume of the induced draft fan.

[0017] The refrigeration unit includes an evaporator, a condenser, and a compressor.

[0018] The inner wall of the first compartment is covered with an insulation layer.

[0019] A doorway is opened on the side wall of the first compartment, and a sealed door is installed at the doorway.

[0020] The beneficial effects of this utility model are as follows:

[0021] This utility model has a compact and reasonable structure and is easy to operate. By setting up a first compartment, a second compartment, a refrigeration unit, an air suction pipe group and an exhaust fan, it can form a vertical airflow from bottom to top inside the second compartment, thereby uniformly distributing the temperature gradient inside the second compartment, thereby reducing the broken rice rate and reducing grain loss during processing.

[0022] This utility model also has the following advantages:

[0023] (1) By setting the upper conical part and the cylindrical part with the sealing plate and the lower conical part with the perforated plate, the cold air in the first chamber enters the accommodating space through the micropores and is discharged through the air inlet, thereby forming a vertical airflow from bottom to top, which in turn allows the cold air to penetrate the rice layer through the micropores, making the rice grains in the accommodating space fluidized and suspended, effectively improving the heat exchange efficiency.

[0024] (2) By setting up micropores in an array, it is possible to ensure that cold air penetrates the rice layer evenly, eliminate ventilation dead corners, and achieve uniform cooling and dehumidification.

[0025] (3) By setting up a ventilation module, when there is white rice in the storage space, the air flow between the first and second compartments can be increased, the internal circulation efficiency can be improved, thereby reducing the temperature difference between the white rice itself and the internal temperature of the first compartment, thus reducing the generation of condensate, improving the efficiency and quality of cooling rice.

[0026] (4) By making the air volume of the refrigeration unit greater than the air volume of the induced draft fan, a slightly positive pressure state inside the first chamber can be maintained to prevent interfering heat sources from entering the first chamber.

[0027] (5) By setting up temperature measuring cables, temperature and humidity sensors and external industrial control computers, parameters can be automatically adjusted without manual intervention, reducing reliance on personnel experience and effectively improving the consistency of product quality.

[0028] (6) This utility model can form a constant temperature and humidity storage space in the second compartment, which can be used as a short-term storage point for production and processing, and has high flexibility of use.

[0029] (7) By setting up a sealed door with heat preservation function and in conjunction with the heat preservation layer, the temperature stability inside the first chamber can be effectively guaranteed, thereby forming a highly controllable and stable working environment in the first chamber. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of this utility model.

[0031] Figure 2 This is a schematic diagram of the internal structure of the first compartment in this utility model (refrigeration unit omitted).

[0032] Figure 3 for Figure 2 A schematic diagram of the structure at point A in the middle.

[0033] Figure 4 This is a schematic diagram of the annular air supply pipe in this utility model.

[0034] Figure 5 This is a schematic diagram of the structure of the second compartment in this utility model (the lower conical part filled in the figure represents micropores).

[0035] Figure 6 This is a schematic diagram of the present invention in its working state.

[0036] The components include: 1. First compartment; 2. Second compartment; 3. Insulation layer; 4. Airtight door; 5. Temperature and humidity sensor; 6. Mounting support; 7. Suction duct assembly; 8. Refrigeration unit; 9. Ventilation module;

[0037] 201. Cylindrical section; 202. Lower conical section; 203. Bin cover; 204. Air inlet; 205. Discharge outlet; 206. Discharge valve;

[0038] 901. Centrifugal fan; 902. Main air supply duct assembly; 903. Circular air supply duct; 904. Air inlet duct. Detailed Implementation

[0039] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0040] The structure and function of this utility model are as follows:

[0041] like Figures 1-6 As shown, the rice cooling device for rice processing in this embodiment includes a hollow first chamber 1. A rice cooling chamber assembly is arranged inside the first chamber 1. The rice cooling chamber assembly includes several second chambers 2. Each second chamber 2 has an air intake at its top. Each air intake is connected to the air inlet of a blower through an air intake pipe assembly 7. Each second chamber 2 has several micro-holes at its bottom. A refrigeration unit 8 is arranged inside the first chamber 1. Cold air is blown into the first chamber 1 through the refrigeration unit 8. The cold air enters the corresponding second chamber 2 through the micro-holes. At the same time, the blower draws air from the inside of each second chamber 2 through the air intake pipe assembly 7, thereby forming an airflow from bottom to top inside each second chamber 2. In this invention, by setting up a refrigeration unit 8, cold air is generated inside the first compartment 1, thereby effectively reducing the temperature and humidity inside the first compartment 1. At the same time, by setting up an air suction pipe group 7 and an exhaust fan (not shown in the attached drawings), air can be drawn from the second compartment 2, so that the cold air with sinking physical properties can enter the second compartment 2 through micropores and form an airflow from bottom to top, so as to avoid uneven temperature gradient distribution inside the second compartment 2, thereby reducing broken rice grains and reducing grain loss during processing.

[0042] The rice cooling bin assembly is supported by mounting brackets 6. By setting mounting brackets 6, the second bin 2 can be suspended in the air, thus facilitating gas flow; in addition, to improve the installation stability of the second bin 2, the bottom of each second bin 2 is connected to the mounting bracket 6 by several support rods.

[0043] like Figure 4 As shown, the structure of a single second compartment 2 is as follows: it includes a cylindrical part 201, and a lower conical part 202 is installed at the bottom of the cylindrical part 201. The internal space of the lower conical part 202 is interconnected with the internal space of the cylindrical part 201, thereby forming a storage space for storing white rice. The lower conical part 202 is made of a perforated plate, thereby forming micropores distributed in an array on the side wall surface of the lower conical part 202. For a single second compartment 2, a compartment cover 203 is installed at the top of the cylindrical part 201. The top of the compartment cover 203 has a round hole, which is connected to a chute for feeding white rice. A discharge port 205 is opened at the bottom of the lower conical part 202 for discharging white rice from the storage space. A discharge valve 206 is installed at the discharge port 205 to control the opening and closing of the discharge port 205.

[0044] In addition, for a single second compartment 2, the air intake is located on the compartment cover 203. Depending on the actual usage requirements, only one or more air intakes may be arranged.

[0045] In this invention, the cylindrical part 201 is a sealing plate and the lower conical part 202 is a perforated plate, so that the cold air in the first chamber 1 enters the accommodating space through micropores and is discharged through the air inlet, thereby forming a vertical airflow from bottom to top. This allows the cold air to penetrate the rice layer through the micropores, making the rice grains in the accommodating space fluidized and suspended, effectively improving the heat exchange efficiency.

[0046] By setting up micropores distributed in an array, it is possible to effectively ensure that cold air penetrates the rice layer evenly, eliminate ventilation dead zones, and achieve uniform cooling and dehumidification.

[0047] The diameter of each micropore is smaller than the average short diameter of a single grain of rice, preventing rice from leaking out of the container through the micropores.

[0048] For a single second compartment 2, several air inlets 204 distributed in a ring are also provided on the side wall of the lower cone 202. The air inlets 204 are connected to the air outlets of the ventilation module 9, which is located inside the first compartment 1. The ventilation module 9 blows air into the corresponding accommodating space to ventilate and cool the rice in the accommodating space. When rice is placed in the second compartment 2, the ventilation module 9 is activated to further improve the airflow in the first compartment 1, improve the internal circulation efficiency, thereby reducing the temperature difference between the internal temperature of the first compartment 1 and the temperature of the rice itself, preventing condensation, and improving the efficiency and quality of cooling the rice.

[0049] Specifically, in northern regions, the external ambient temperature is low in winter, which affects the temperature inside the first compartment 1, resulting in a large temperature difference between the temperature inside the first compartment 1 and the temperature of the rice to be processed. The temperature inside the first compartment 1 can be increased by the refrigeration unit 8 to reduce the temperature difference, and then the air intake pipe group 7 and the ventilation module 9 can be used to ventilate evenly, thereby reducing the generation of condensate.

[0050] In southern regions, where the external ambient temperature is high, different cooling temperatures can be set for the refrigeration unit 8 at different times during the rice cooling process to improve the efficiency of rice cooling. This ensures that the temperature difference between the internal temperature of the first compartment 1 and the temperature of the rice itself is maintained within a certain range, thereby achieving efficient cooling while reducing the generation of condensate.

[0051] like Figures 2-4 As shown, the structure of the ventilation module 9 is as follows: it includes a centrifugal fan 901 arranged in the first chamber 1. The air inlet of the centrifugal fan 901 is connected to the air inlet pipe 904, and the exhaust port of the centrifugal fan 901 is connected to the main air supply pipe group 902. Several annular air supply pipes 903 are installed on the main air supply pipe group 902. The annular air supply pipes 903 are arranged one-to-one with the lower cone 202. Several air outlets are provided on each annular air supply pipe 903. The air outlets on each annular air supply pipe 903 are connected one-to-one with the air inlet 204 on the corresponding lower cone 202. The centrifugal fan 901 draws air from the first chamber 1 through the air inlet pipe 904 and, under the guidance of the main air supply pipe group 902, blows it into the corresponding accommodating space through each annular air supply pipe 903. In this invention, the air inlet and outlet of the centrifugal fan 901 are connected to the corresponding pipelines using a flexible connection method, thereby avoiding the adverse effects of vibration generated during the operation of the centrifugal fan 901 on the pipeline system.

[0052] The air volume of the refrigeration unit 8 is greater than the air volume of the induced draft fan, which can maintain a positive pressure inside the first chamber 1 and prevent interfering heat sources from entering the first chamber 1.

[0053] The refrigeration unit 8 includes an evaporator, a condenser, and a compressor. The refrigeration unit 8 is used to maintain a constant temperature and humidity within the first compartment 1, ensuring that the temperature and humidity of the cold air introduced into the first compartment 1 remain consistent across different ambient temperatures at different times, thereby improving product consistency. The principle by which the refrigeration unit 8 introduces cold air into the first compartment 1 is similar to that of an air conditioner. The refrigerant circulates between the evaporator, condenser, and compressor, undergoing state changes to achieve heat exchange with the outside environment; this will not be elaborated further here.

[0054] The inner wall of the first compartment 1 is covered with an insulation layer 3. By setting the insulation layer 3, external heat sources can be isolated. The insulation layer 3 can be made of rock wool board, which has the characteristics of being moisture-proof, environmentally friendly, flexible and pressure-resistant.

[0055] A doorway is opened on the side wall of the first compartment 1, and a sealed door 4 is installed in the doorway. When the sealed door 4 is closed, it can ensure that the interior of the first compartment 1 forms a closed space. At the same time, the sealed door 4 is an insulated sealed door to avoid interference from external heat sources.

[0056] In this invention, at least one temperature and humidity sensor 5 is suspended inside a single second chamber 2 to detect the temperature and humidity inside the corresponding second chamber 2. When multiple temperature and humidity sensors 5 are configured, they are distributed at intervals along the axial direction of the second chamber 2. The temperature and humidity sensors 5 are electrically connected to an external industrial control computer. Based on the detection results of the temperature and humidity sensors 5, the external industrial control computer can automatically control the cooling temperature and air volume parameters of the refrigeration unit 8, the air volume parameters of each induced draft fan, and the air volume parameters of the centrifugal fan 901, thereby eliminating the need for manual intervention, reducing reliance on personnel experience, and effectively improving the consistency of product quality.

[0057] The working process of this utility model is as follows:

[0058] like Figure 6 As shown, when rice processing begins, the rice cooling device is started. First, the refrigeration unit 8 runs, blowing cold air into the first chamber 1 to reduce the temperature and humidity inside the first chamber 1. At the same time, the exhaust fan runs, drawing air from the corresponding second chamber 2 through the suction pipe group 7. This process maintains a slightly positive pressure environment inside the first chamber 1.

[0059] After the initial processing steps are completed, the white rice enters the rice cooling device and is temporarily stored in the second compartment 2. The refrigeration unit 8 and the induced draft fan are running continuously.

[0060] At the same time, the centrifugal fan 901 starts to operate, so that the air in the first chamber 1 enters the corresponding second chamber 2 through the air inlet pipe 904, the main air supply pipe group 902, and each annular air supply pipe 903 in sequence, so as to further increase the air flow in the second chamber 2, improve the internal temperature uniformity, effectively avoid the generation of condensate, and thus achieve the effect of improving product quality.

[0061] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A rice cooling device for rice processing, characterized in that: The first compartment (1) is hollow inside. The first compartment (1) is equipped with a rice cooling compartment assembly. The rice cooling compartment assembly includes several second compartments (2). Each second compartment (2) has an air intake at the top. Each air intake is connected to the air inlet of the blower through an air intake pipe assembly (7). Each second compartment (2) has several micro-holes at the bottom. The first compartment (1) is equipped with a refrigeration unit (8). Cold air is blown into the first chamber (1) by the refrigeration unit (8), and the cold air enters the corresponding second chamber (2) through micropores. At the same time, the exhaust fan draws air from the interior of each second chamber (2) through the suction pipe group (7), thereby forming an airflow from bottom to top inside each second chamber (2).

2. The rice cooling device for rice processing as described in claim 1, characterized in that: The rice storage assembly is supported by a mounting bracket (6).

3. The rice cooling device for rice processing as described in claim 1, characterized in that: The structure of a single second compartment (2) is as follows: it includes a cylindrical part (201), and a lower conical part (202) is installed at the bottom of the cylindrical part (201). The internal space of the lower conical part (202) is connected to the internal space of the cylindrical part (201) to form a storage space for storing white rice. The lower cone (202) is made of a perforated plate, thereby forming micropores distributed in an array on the side wall surface of the lower cone (202).

4. The rice cooling device for rice processing as described in claim 3, characterized in that: The diameter of a single micropore is smaller than the average short diameter of a single grain of white rice.

5. The rice cooling device for rice processing as described in claim 3, characterized in that: For a single second compartment (2), several air inlets (204) are also provided on the side wall of the lower cone (202) in a ring. The air inlets (204) are connected to the air outlet of the ventilation module (9). The ventilation module (9) is arranged inside the first compartment (1). The ventilation module (9) blows air into the corresponding accommodating space to ventilate and cool the rice in the accommodating space.

6. The rice cooling device for rice processing as described in claim 5, characterized in that: The structure of the ventilation module (9) is as follows: it includes a centrifugal fan (901) arranged in the first chamber (1), the air inlet of the centrifugal fan (901) is connected to the air inlet pipe (904), the exhaust port of the centrifugal fan (901) is connected to the main air supply pipe group (902), and several annular air supply pipes (903) are installed on the main air supply pipe group (902). The annular air supply pipes (903) are arranged in a one-to-one correspondence with the lower cone (202). Several air outlets are provided on a single annular air supply pipe (903), and the air outlets on a single annular air supply pipe (903) are connected in a one-to-one correspondence with the air inlet (204) on the corresponding lower cone (202). The centrifugal fan (901) draws air from the first chamber (1) through the air inlet pipe (904) and, under the guidance of the main air supply pipe group (902), blows it into the corresponding accommodating space through each annular air supply pipe (903).

7. The rice cooling device for rice processing as described in claim 1, characterized in that: The air volume of the refrigeration unit (8) is greater than the air volume of the induced draft fan.

8. The rice cooling device for rice processing as described in claim 1, characterized in that: The refrigeration unit (8) includes an evaporator, a condenser and a compressor.

9. The rice cooling device for rice processing as described in claim 1, characterized in that: The inner wall of the first compartment (1) is covered with a heat insulation layer (3).

10. The rice cooling device for rice processing as described in claim 1, characterized in that: A doorway is opened on the side wall of the first compartment (1), and a sealed door (4) is installed at the doorway.

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