Airflow cooling device of rice low-temperature rice mill

Abstract

This utility model discloses an airflow cooling device for a low-temperature rice milling machine, belonging to the technical field of airflow cooling devices. It includes a cooling box, with a cold airflow supply component installed on one side and a hot airflow discharge mechanism installed on the other side. This utility model allows the milled rice to be evenly dispersed by the material distribution component within the cooling box, facilitating sufficient cooling by the cold airflow supply component. In the hot airflow discharge mechanism, a filter plate is mounted on a mounting frame, effectively filtering dust and bran from the hot airflow to prevent blockage of the cooling channel. When the filter plate becomes clogged, pulling the lever utilizes the sliding connection between the limiting plate and the limiting groove to quickly remove the mounting frame and filter plate from the ventilation pipe for cleaning or replacement. This effectively solves the problem of reduced cooling efficiency due to screen blockage, affecting rice quality and yield. It effectively improves the automation level and operational stability of the airflow cooling device for the low-temperature rice milling machine, reducing maintenance costs and labor intensity.

Description

Technical Field

[0001] This utility model relates to the technical field of airflow cooling devices, and in particular to an airflow cooling device for a low-temperature rice milling machine. Background Technology

[0002] Using a low-temperature rice milling machine, the rice milling temperature can be controlled by airflow cooling, reducing the loss of rice nutrients, lowering the breakage rate, and improving processing quality, thus meeting the production requirements of high-quality rice. The airflow cooling device of the low-temperature rice milling machine mainly consists of a fan system, cooling air ducts, and airflow distribution device. Its working principle is that the fan drives the air to circulate in the rice milling chamber. After the airflow comes into contact with the rice grains that generate heat through friction, it carries away the heat and cools it through a heat exchanger or directly discharges it, forming a closed-loop heat dissipation system.

[0003] However, in the existing technology, in the airflow cooling device of the low-temperature rice milling machine, when the airflow containing rice bran passes through the small holes of the screen, as the resistance increases, the airflow continuously weakens. The oily rice bran will gradually stick and stick to the screen wall, causing the screen to become clogged. This not only significantly reduces the cooling efficiency, but also causes the finished rice to be covered with rice bran, which in turn affects the rice yield and the normal operation of subsequent refining processes. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art by proposing an airflow cooling device for a low-temperature rice milling machine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an airflow cooling device for a low-temperature rice milling machine, comprising a cooling box, a cold airflow supply component installed on one side of the cooling box, and a hot airflow discharge mechanism installed on the other side of the cooling box. The hot airflow discharge mechanism includes a ventilation pipe and a limiting plate. An installation frame is installed inside the ventilation pipe, a filter plate is fixedly connected to the inner wall of the installation frame, and a pull rod is fixedly connected to the side of the installation frame. A limiting plate is fixedly connected to the surface of the installation frame. A limiting groove is provided on the inner wall of the ventilation pipe. The limiting plate is located inside the limiting groove and is slidably connected to the ventilation pipe. A first magnet is fixedly connected inside the ventilation pipe and is located inside the limiting groove. A second magnet is fixedly connected to the side of the limiting plate and is attracted and fixed to the first magnet.

[0006] Preferably, the cooling box consists of a feed hopper and a guide pipe, with the guide pipe located at the bottom of the feed hopper and a material distribution component installed inside the guide pipe.

[0007] Preferably, the material distribution assembly consists of two rows of inverted V-shaped plates arranged vertically.

[0008] Preferably, the surface of the mounting bracket is provided with a groove, a spring is fixedly connected inside the groove, a ball pin is fixedly connected to the top of the spring, the ball pin is located inside the groove and is slidably connected to the mounting bracket, and the ball pin is inserted into the inner wall of the ventilation pipe.

[0009] Preferably, a connecting shaft is rotatably connected to the center of the filter plate, one end of the connecting shaft is fixedly connected to a windmill blade, and the other end of the connecting shaft is fixedly connected to a scraper, which is in contact with the surface of the filter plate.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0011] 1. In this utility model, the material distribution component inside the cooling box can evenly disperse the milled rice, facilitating sufficient cooling by the cold air supply component. In the hot air discharge mechanism, the filter plate is installed on the mounting frame, which can effectively filter dust and bran in the hot air flow, preventing them from clogging the cooling channel. When the filter plate is clogged, pulling the lever and using the sliding connection between the limiting plate and the limiting groove, the mounting frame and filter plate can be quickly removed from the ventilation pipe for cleaning or replacement. During installation, the limiting plate and the limiting groove cooperate to limit the position, ensuring that the ball pin is accurately inserted into the limiting hole on the inner wall of the ventilation pipe, and the second magnet is attracted and fixed by the first magnet, ensuring stable installation of the filter plate. This effectively solves the problem of reduced cooling efficiency caused by screen blockage, which affects rice quality and yield, and improves the practicality and ease of maintenance of the airflow cooling device for low-temperature rice milling machines.

[0012] 2. In this utility model, during the process of hot airflow being discharged through the filter plate, the hot airflow blows the fan blades, causing the connecting shaft connected to them to rotate. This causes the scraper fixed at the other end of the connecting shaft to rotate along the surface of the filter plate. Utilizing the characteristic of the scraper adhering to the surface of the filter plate, the dust, bran, and other debris attached to the surface of the filter plate are cleaned in real time. There is no need for frequent manual disassembly and cleaning, which continuously maintains the ventilation performance of the filter plate and reduces the problem of reduced cooling efficiency caused by filter plate blockage. This effectively improves the automation level and operational stability of the airflow cooling device of the low-temperature rice milling machine, and reduces maintenance costs and labor intensity. Attached Figure Description

[0013] Figure 1 This utility model provides a first three-dimensional structural schematic diagram of an airflow cooling device for a low-temperature rice milling machine.

[0014] Figure 2 This utility model provides a second three-dimensional structural diagram of an airflow cooling device for a low-temperature rice milling machine.

[0015] Figure 3 This utility model provides a cross-sectional side view of the airflow cooling device for a low-temperature rice milling machine.

[0016] Figure 4 This utility model provides a three-dimensional cross-sectional view of the ventilation pipe in the airflow cooling device of a low-temperature rice milling machine.

[0017] Figure 5This utility model presents a cross-sectional three-dimensional structural diagram of the mounting frame in the airflow cooling device of a low-temperature rice milling machine.

[0018] Legend: 1. Cooling box; 2. Cold air supply assembly; 3. Hot air exhaust mechanism; 31. Ventilation pipe; 32. Mounting bracket; 33. Filter plate; 34. Spring; 35. Ball pin; 36. Pull rod; 37. Limiting plate; 38. Limiting groove; 39. Magnet No. 1; 310. Magnet No. 2; 311. Connecting shaft; 312. Windmill blade; 313. Scraper. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0021] Example 1: As Figures 1-4 As shown, this utility model provides an airflow cooling device for a low-temperature rice milling machine, including a cooling box 1. A cold airflow supply component 2 is installed on one side of the cooling box 1, and a hot airflow discharge mechanism 3 is installed on the other side of the cooling box 1. The hot airflow discharge mechanism 3 includes a ventilation pipe 31 and a limiting plate 37. A mounting frame 32 is installed inside the ventilation pipe 31. A filter plate 33 is fixedly connected to the inner wall of the mounting frame 32, and a pull rod 36 is fixedly connected to the side of the mounting frame 32. The limiting plate 37 is fixedly connected to the surface of the mounting frame 32. A limiting groove 38 is provided on the inner wall of the ventilation pipe 31. The limiting plate 37 is located inside the limiting groove 38 and is slidably connected to the ventilation pipe 31. A first magnet 39 is fixedly connected internally and is located inside the limiting groove 38. A second magnet 310 is fixedly connected to the side of the limiting plate 37. The second magnet 310 is attracted and fixed to the first magnet 39. The cooling box 1 consists of a feeding hopper and a guide pipe. The guide pipe is located at the bottom of the feeding hopper and is equipped with a material distribution component inside the guide pipe. The material distribution component consists of two rows of inverted V-shaped plates distributed vertically. The surface of the mounting frame 32 is provided with a groove. A spring 34 is fixedly connected inside the groove. A ball pin 35 is fixedly connected to the top of the spring 34. The ball pin 35 is located inside the groove and is slidably connected to the mounting frame 32. The ball pin 35 is inserted into the inner wall of the ventilation pipe 31.

[0022] The specific setup and function of this embodiment are described below. The milled rice is fed into the feed pipe through the upper feed hopper of the cooling box 1. The rice is distributed evenly downwards by a material distribution assembly composed of inverted V-shaped plates arranged vertically within the feed pipe. Meanwhile, the cold air supply assembly 2 ventilates and cools the rice. The hot air is then discharged through the ventilation pipe 31. During this discharge process, dust, bran, and other impurities in the hot air are filtered through the filter plate 33. If the filter holes of the filter plate 33 become clogged, the pull rod 36 can be pulled to remove the blockage. The mounting bracket 32 ​​and filter plate 33 are quickly removed from the ventilation duct 31 to facilitate cleaning or replacement of the filter plate 33. When installing the mounting bracket 32 ​​and filter plate 33, the limiting plate 37 is inserted into the limiting groove 38 to limit the installation of the mounting bracket 32, so that it can be accurately installed in the set position. At the same time, it ensures that the ball pin 35 can be accurately inserted into the limiting hole set in the inner wall of the ventilation duct 31. Meanwhile, the second magnet 310 and the first magnet 39 are attracted to each other, so that the filter plate 33 can be stably installed inside the ventilation duct 31.

[0023] The material distribution component inside the cooling box 1 allows the milled rice to be evenly dispersed, facilitating sufficient cooling by the cold air supply component 2. In the hot air discharge mechanism 3, the filter plate 33 is installed on the mounting frame 32, effectively filtering dust and bran in the hot airflow to prevent blockage of the cooling channel. When the filter plate 33 is blocked, pulling the lever 36 and utilizing the sliding connection between the limiting plate 37 and the limiting groove 38, the mounting frame 32 and the filter plate 33 can be quickly removed from the ventilation pipe 31 for cleaning or replacement. During installation, the limiting plate 37 and the limiting groove 38 cooperate to limit the movement, ensuring that the ball pin 35 is accurately inserted into the limiting hole on the inner wall of the ventilation pipe 31, and the second magnet 310 and the first magnet 39 are attracted and fixed, ensuring stable installation of the filter plate 33. This effectively solves the problem of reduced cooling efficiency and impact on rice quality and yield caused by screen blockage, improving the practicality and ease of maintenance of the airflow cooling device for the low-temperature rice milling machine.

[0024] Example 2: Figures 2-5 As shown, a connecting shaft 311 is rotatably connected to the center of the filter plate 33. One end of the connecting shaft 311 is fixedly connected to a windmill blade 312, and the other end of the connecting shaft 311 is fixedly connected to a scraper 313, which is in contact with the surface of the filter plate 33.

[0025] The overall effect of this embodiment is that, during the process of hot airflow being discharged through the filter plate 33, the hot airflow blows the fan blades 312, causing the connecting shaft 311 connected to it to rotate. This causes the scraper 313 fixed at the other end of the connecting shaft 311 to rotate along the surface of the filter plate 33. By utilizing the characteristic of the scraper 313 adhering to the surface of the filter plate 33, the dust, bran and other debris attached to the surface of the filter plate 33 are cleaned in real time without the need for frequent manual disassembly and cleaning. This maintains the ventilation performance of the filter plate 33, reduces the problem of decreased cooling efficiency caused by filter plate 33 blockage, effectively improves the automation level and operational stability of the airflow cooling device of the low-temperature rice milling machine, and reduces maintenance costs and labor intensity.

[0026] The operating method and working principle of this device are as follows: The milled rice is fed into the feed pipe through the upper feed hopper of the cooling box 1. The rice is distributed evenly downwards by a material distribution assembly consisting of inverted V-shaped plates arranged vertically within the feed pipe. Meanwhile, the cold air supply assembly 2 ventilates and cools the rice. The hot air is then discharged through the ventilation pipe 31. During this discharge process, dust, bran, and other impurities in the hot air are filtered through the filter plate 33. When the filter holes of the filter plate 33 become clogged, the installation can be stopped by pulling the pull rod 36. The frame 32 and filter plate 33 can be quickly removed from the ventilation pipe 31, making it easy to clean or replace the filter plate 33. When installing the mounting frame 32 and filter plate 33, the limiting plate 37 is inserted into the limiting groove 38 to limit the installation of the mounting frame 32, so that it can be accurately installed in the set position. At the same time, it ensures that the ball pin 35 can be accurately inserted into the limiting hole set in the inner wall of the ventilation pipe 31. Meanwhile, the second magnet 310 and the first magnet 39 attract each other, so that the filter plate 33 can be stably installed inside the ventilation pipe 31.

[0027] During use, the wind turbine blades 312 will drive the connecting shaft 311 to rotate under the blowing of hot air, thereby driving the scraper 313 to rotate along the surface of the filter plate 33. The scraper 313 cleans the debris attached to the surface of the filter plate 33, ensuring the ventilation performance of the filter plate 33.

[0028] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. An airflow cooling device for a low-temperature rice milling machine, comprising a cooling box (1), wherein a cold airflow supply assembly (2) is installed on one side of the cooling box (1), and a hot airflow discharge mechanism (3) is installed on the other side of the cooling box (1), characterized in that: The hot air exhaust mechanism (3) includes a ventilation pipe (31) and a limiting plate (37). A mounting bracket (32) is installed inside the ventilation pipe (31). A filter plate (33) is fixedly connected to the inner wall of the mounting bracket (32), and a pull rod (36) is fixedly connected to the side of the mounting bracket (32). A limiting plate (37) is fixedly connected to the surface of the mounting bracket (32). A limiting groove (38) is provided on the inner wall of the ventilation pipe (31). The limiting plate (37) is located inside the limiting groove (38) and is slidably connected to the ventilation pipe (31). A first magnet (39) is fixedly connected inside the ventilation pipe (31). The first magnet (39) is located inside the limiting groove (38). A second magnet (310) is fixedly connected to the side of the limiting plate (37). The second magnet (310) is attracted and fixed to the first magnet (39).

2. The airflow cooling device for a low-temperature rice milling machine according to claim 1, characterized in that: The cooling box (1) consists of a feeding hopper and a guide pipe. The guide pipe is located at the bottom of the feeding hopper and is equipped with a material distribution component inside the guide pipe.

3. The airflow cooling device for a low-temperature rice milling machine according to claim 2, characterized in that: The material distribution assembly consists of two rows of inverted V-shaped plates arranged vertically.

4. The airflow cooling device for a low-temperature rice milling machine according to claim 1, characterized in that: The mounting bracket (32) has a groove on its surface. A spring (34) is fixedly connected inside the groove. A ball pin (35) is fixedly connected to the top of the spring (34). The ball pin (35) is located inside the groove and is slidably connected to the mounting bracket (32). The ball pin (35) is inserted into the inner wall of the ventilation pipe (31).

5. The airflow cooling device for a low-temperature rice milling machine according to claim 1, characterized in that: The filter plate (33) is rotatably connected to a connecting shaft (311). One end of the connecting shaft (311) is fixedly connected to a windmill blade (312), and the other end of the connecting shaft (311) is fixedly connected to a scraper (313). The scraper (313) is in contact with the surface of the filter plate (33).

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