Automatic dust removal device of outdoor rice milling vending machine

Abstract

The utility model provides an automatic dust removal device of an outdoor rice milling vending machine, and relates to the technical field of rice milling equipment. The utility model provides an automatic dust removal device of an outdoor rice milling and vending machine. The automatic dust removal device comprises a rice milling and vending machine body, a granary and a top cover arranged above the rice milling and vending machine body. An air duct is arranged below the top cover, an air inlet is formed in the bottom of the air duct, an air outlet is formed in the outer wall of the rice milling vending machine, the air outlet is connected with a swirler, and the swirler is communicated with the interior of the rice milling vending machine through the air outlet, the air duct and the air inlet. The outdoor rice milling vending machine can generate heat in the working process and the external solarization process, the temperature difference with the outside is formed in the rice milling vending machine, so that the internal and external pressure difference is generated, and the internal and external airflow circulation is further enhanced by combining the cyclone communicated with the interior of the rice milling vending machine through the air outlet, the air duct and the air inlet; dust generated in the rice milling process is brought out of the milled rice vending machine based on natural airflow.

Description

Technical Field

[0001] The present application relates to the technical field of rice milling equipment, and more specifically, to an automatic dust removal device for an outdoor rice milling vending machine. Background Art

[0002] An outdoor rice milling and vending machine is an automated device that combines the functions of rice milling and rice vending. With the popularization of healthy eating concepts, people's demand for a diversified diet is increasing. Outdoor rice milling and vending machines can be set up in places such as residential areas, parks, and markets, allowing consumers to conveniently choose the degree of rice grinding according to their needs while ensuring the freshness of the rice. However, rice milling and vending machines generate dust during use, which mainly originates from the rice milling stage. Therefore, dust removal is usually included in the rice milling process. However, in actual use, the dust removal process cannot completely remove this dust. When the milled rice is transported and sold, a large amount of dust will still escape into the rice milling and vending machine. This dust may enter the bearings and other moving parts of the rice milling machine, causing accelerated wear and reducing the service life of the equipment.

[0003] In response to this situation, existing technical solutions include the following:

[0004] 1. Chinese invention patent publication number CN115532341A discloses a screening mechanism for a rice mill. This solution separates rice husks and rice bran from air through a cyclone separator and transfers them to a water-containing aggregate bag. This effectively improves dust removal efficiency and prevents secondary escape of rice husk and rice bran dust, which can reduce environmental dust to a certain extent. However, the retained rice husks and rice bran in this solution are very susceptible to mold and insect infestation after mixing with water, affecting environmental hygiene.

[0005] 2. Chinese Utility Model Patent Publication No. CN218251547U discloses a fully automatic, disposable rice polishing machine. This machine uses a motor to drive a guide drum, causing rice with residual rice husks to fall into a receiving hopper. Centrifugal force forces the rice to spread outward along the edge of the hopper. When the blower is operating, air is blown from the air outlet toward the rice. The lighter rice husks move toward the electrostatic precipitator anode plate and are electrostatically attracted, while the rice falls into a collection trough, thus separating the rice from the rice. However, this solution requires additional electrical equipment, increasing energy consumption. Furthermore, the accumulated rice husks after separation can be dispersed again, necessitating timely removal.

[0006] Based on existing technical solutions, it can be seen that there are two main approaches to dealing with environmental dust in this field: one is to improve dust cleaning efficiency and prevent dust from escaping; the other is to recollect the dust. Existing solutions require additional power equipment, which increases energy consumption and requires frequent cleaning of collected dust. Utility Model Content

[0007] In order to solve the problems existing in the existing rice milling equipment, the technical solution adopted in this application is an automatic dust removal device for an outdoor rice milling vending machine, comprising a rice milling vending machine body, a silo and a top cover arranged above the rice milling vending machine body;

[0008] An air duct is provided under the top cover, and a plurality of air inlets are provided at the bottom of the air duct. An air outlet is provided at the side wall of the rice milling and vending machine body. The air outlet is connected to a cyclone, and the cyclone is connected to the interior of the rice milling and vending machine body through the air outlet, air duct and air inlet.

[0009] Preferably, the air duct runs through the rice milling and vending machine body horizontally, an air duct door is provided at one end of the air duct away from the air outlet, the opening size of the air duct door meets the requirements for the passage of the air duct, and the air duct is movably connected to the rice milling and vending machine body through a slide rail.

[0010] Preferably, the air inlets are circular and evenly distributed at the bottom of the air duct.

[0011] Preferably, a blocking plate inclined to the bottom surface of the air duct is provided on the side of the air inlet facing the air duct, the inclination direction of the blocking plate is toward the air outlet, the ratio of the height of the blocking plate to the height of the air duct is 1:10-20, and the inclination angle of the blocking plate is 40-60°.

[0012] Preferably, the barn is independent of the space connected to the air duct within its height range, and the barn is provided with an independent opening at the top cover.

[0013] Preferably, an air inlet is provided at the bottom of the main body of the rice milling and vending machine, a filter is provided at the air inlet, and a waterproof eaves is provided above the air inlet toward the outside of the main body of the rice milling and vending machine.

[0014] Preferably, the total area of ​​the air inlet is 1 / 3-1 / 2 of the bottom area of ​​the air duct.

[0015] Preferably, the side wall of the rice milling vending machine body is provided with a vending surface and a non-vending surface, the non-vending surface is not in direct contact with the internal equipment of the rice milling vending machine body, the reflectivity of the paint on the non-vending surface is 10-50% in the visible light wavelength range, and the reflectivity of the paint is gradually increased from bottom to top on the non-vending surface.

[0016] Preferably, the coating of the top cover has a reflectivity higher than 80% in the visible light wavelength range, and the coating forms a matte coating on the upper surface of the top cover.

[0017] The beneficial effects of the utility model are:

[0018] 1. The outdoor rice milling and vending machine generates heat during operation, creating a temperature difference between the interior and the outside. Due to long-term exposure to the sun, the internal temperature is higher than the external environment, resulting in an internal and external pressure difference. A cyclone connected to the interior of the rice milling and vending machine through the air outlet, air duct, and air inlet further enhances the internal and external airflow, allowing the dust generated during the rice milling process to be carried out of the machine by natural airflow.

[0019] 2. No additional power equipment is required, which reduces energy consumption and working noise. The dust is discharged passively, continuously and relatively slowly. The discharged dust can be naturally carried away by the wind outside the rice milling and vending machine, avoiding large amounts of accumulation. There will also be no "dust spraying" phenomenon during operation that affects the product image, and the impact on the environmental hygiene around the rice milling and vending machine is also reduced.

[0020] 3. The need for cleaning inside the rice milling vending machine is significantly reduced, and most of the dust is directly discharged from the rice milling vending machine instead of being collected. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art:

[0022] Figure 1 This is a schematic diagram of the structure of the outdoor rice milling and vending machine in the main viewing direction of this application;

[0023] Figure 2 This is a side view of the structure of the outdoor rice milling and vending machine of this application;

[0024] Figure 3 This is a three-dimensional schematic diagram of the opposite side of the air duct outlet of this application;

[0025] Figure 4 This is a three-dimensional schematic diagram of the air duct in specific embodiment 1 of the present application;

[0026] Figure 5 This is a schematic side view of the air duct in specific embodiment 1 of the present application;

[0027] Figure 6 This is a bottom view of the air duct in specific embodiment 2 of the present application;

[0028] Figure 7 This is a three-dimensional schematic diagram of the air duct in specific embodiment 2 of the present application;

[0029] Figure 8 This is a schematic bottom view of the air duct of specific embodiment 2 of the present application.

[0030] Explanation of the accompanying symbols: 1. Rice milling and vending machine body; 2. Barn; 3. Top cover; 4. Air duct; 5. Air inlet; 6. Air outlet; 7. Cyclone; 8. Air duct door; 9. Blocking plate; 10. Barn door; 11. Conveying pipe; 12. Waterproof eaves; 13. Selling surface; 14. Non-selling surface; 15. Slide rail. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0032] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0033] An embodiment of the present application provides an automatic dust removal device for an outdoor rice milling and vending machine, comprising a rice milling and vending machine body, a barn, and a top cover disposed above the rice milling and vending machine body;

[0034] An air duct 4 is provided below the top cover 3, and a plurality of air inlets 5 are provided at the bottom of the air duct 4. An air outlet 6 is provided at the side wall of the rice milling and vending machine body 1. The air outlet 6 is connected to a cyclone 7. The cyclone 7 is connected to the interior of the rice milling and vending machine body 1 through the air outlet 6, the air duct 4, and the air inlet 5.

[0035] During operation, the outdoor rice milling and vending machine generates heat, creating a temperature difference between its interior and the outside world. Due to long-term exposure to the sun, the internal temperature is higher than the external environment, resulting in an internal-external pressure difference. This internal pressure is higher than the external air pressure, causing dust that was not completely collected during the rice milling process to enter the air duct 4 with the air flow due to the pressure difference. A cyclone 7, which communicates with the interior of the rice milling and vending machine via the air outlet 6, the air duct 4, and the air inlet 5, further enhances the internal and external airflow. Dust generated during the rice milling process is naturally carried out of the rice milling and vending machine body 1 by the natural airflow. No additional power equipment is required, reducing energy consumption and operating noise. Furthermore, the dust is discharged passively, continuously, and relatively slowly, allowing the discharged dust to be naturally carried away by the wind outside the rice milling and vending machine, preventing large amounts of accumulation. There is also no "dust spraying" phenomenon during operation that affects the product image, and the impact on the environmental hygiene surrounding the rice milling and vending machine is reduced.

[0036] In another embodiment of the present application, the air duct 4 horizontally extends through the main body 1 of the rice-milling and vending machine. A duct door 8 is provided at the end of the air duct 4 away from the air outlet 6. The opening size of the duct door 8 satisfies the requirements for the passage of the air duct 4. The air duct 4 is movably connected to the main body 1 of the rice-milling and vending machine via a slide rail 15. Dust may remain in the area of ​​the air duct 4 where there is no air outlet 6. The provision of the duct door 8 allows the air duct 4 to be pulled out of the main body of the rice-milling and vending machine through the duct door 8 at appropriate intervals for cleaning, effectively reducing dust accumulation within the main body of the rice-milling and vending machine. The air duct 4 is movably connected to the main body 1 of the rice-milling and vending machine via a slide rail 15. The slide rail 15 can be positioned above, below, or on the side wall of the air duct 4 as needed. In this embodiment, the slide rail is positioned above the air duct 4 to reduce dust accumulation on the slide rail. Dust enters the air duct 4 or is blocked by the bottom of the air duct 4 as it moves upward with the air flow.

[0037] In another embodiment of the present application, the air inlet 5 is circular and evenly distributed at the bottom of the air duct 4. The setting of the circular air inlet 5 can minimize the air flow resistance, and the air flow is smoother. Because there are no sharp corners, it is not easy to form vortices when the air flows, and the exhaust effect of passive exhaust is maximized. The air inlets 5 evenly distributed on the plane can provide a more balanced airflow, reduce the situation where the air flow is too strong or too weak in certain areas, and try to avoid the formation of dead corners of air flow in areas far away from the air inlet 5, promote the overall circulation of air in the space, and improve the efficiency of air exchange. When the air inlets 5 are set in a concentrated manner, it will cause higher wind speed and pressure loss in the area. Dispersed air inlets 5 can reduce local pressure loss.

[0038] In another embodiment of the present application, a baffle plate 9 is provided on the side of the air inlet 5 facing the air duct 4, which is inclined to the bottom surface of the air duct 4. The baffle plate 9 is inclined toward the air outlet 6. The ratio of the height of the baffle plate 9 to the height of the air duct 4 is 1:10-20, and the inclination angle between the baffle plate 9 and the bottom surface of the air duct 4 is 40-60°. During the use of the automatic dust removal device, dust still accumulates in the air duct 4. Especially at night when the equipment is unused and not exposed to sunlight, the airflow of the automatic dust removal device is weakened compared to that during the day, and the dust remaining in the air duct will gradually settle in the air duct. The baffle plate allows dust to accumulate in a short period of time. At the same time, the baffle plate also has the effect of slowing down the airflow corner and reducing pressure loss, preventing the airflow from suddenly changing from bottom to top in the air duct to from the air duct to the air outlet, thereby minimizing pressure loss.

[0039] In another embodiment of the present application, the barn 2 is independent of the space connected to the air duct 4 within its height range, and the barn 2 is provided with an independent opening at the top cover. In order to prevent dust caused by the automatic dust removal device of the rice mill from entering the barn 2, in the present application, the upper opening of the barn 2 is directly provided at the top cover, and a barn door 10 is provided at the upper opening of the barn. The lower opening is directly connected to the conveying pipe 11, the screw conveyor and other equipment, and the middle is a side wall. Therefore, the barn 2 remains independent of the air duct within its own height range. Although the independent opening of the barn 2 directly provided at the top cover puts higher requirements on the sealing at the opening position, it can effectively prevent dust from re-entering the barn 2.

[0040] In another embodiment of the present application, an air inlet is provided at the bottom of the rice-milling and vending machine body 1, a filter is provided at the air inlet, and a waterproof eaves 12 is provided above the air inlet toward the outside of the rice-milling and vending machine body 1. In order to stabilize the airflow direction within the rice-milling and vending machine body 1, an air inlet is provided at the bottom of the rice-milling and vending machine body 1. The airflow is drawn into the device due to the pressure drop caused by the rising hot air within the rice-milling and vending machine body 1. During the inhalation process, the airflow passes through the filter, reducing the amount of dust entering.

[0041] In another embodiment of the present application, the total area of ​​the air inlet 5 is 1 / 3-1 / 2 of the bottom area of ​​the air duct 4. In order to maintain a balance between reducing the dead angle area of ​​air flow and improving the dust removal efficiency, the total area of ​​the air inlet 5 is set to 1 / 3-2 / 3 of the bottom area of ​​the air duct 4, so that the main flow direction of the air flow in the air duct 4 is kept toward the air outlet 6. If the area of ​​the air inlet 5 is too large, dust at the end farther from the air outlet 6 will have difficulty being discharged through the air outlet 6, forming a new dead angle. If the area of ​​the air inlet 5 is too small, the airflow pressure loss will be increased, or turbulence will be generated, and at the same time, a dead angle of air flow will be formed below the air duct 4.

[0042] In another embodiment of the present application, the side wall of the rice-milling vending machine body 1 is provided with a vending surface 13 and a non-vending surface 14. The non-vending surface 14 is not in direct contact with the internal equipment of the rice-milling vending machine body 1. The reflectivity of the paint on the non-vending surface 14 is 10-50% in the visible light wavelength range, and the reflectivity of the paint is gradually increased from bottom to top on the non-vending surface 14. In order to further expand the temperature difference between the inside and outside of the rice-milling vending machine body 1, the internal temperature of the rice-milling vending machine body 1 is increased by increasing the light absorption capacity of the side wall of the rice-milling vending machine body 1. The increase in the internal temperature of the rice-milling vending machine brought about by this solution will increase the ventilation capacity due to the increase in pressure difference caused by the temperature increase. The air flow carries away the internal heat, thereby cooling the internal equipment and preventing the internal temperature of the rice-milling vending machine body 1 from being too high. This process is repeated.

[0043] The vending surface 13 inevitably needs to connect to the user interface. Excessively low reflectivity could cause the device to heat up, potentially damaging it. However, the non-vending surface 14 doesn't directly contact the device, so enhancing its light absorption capacity won't directly impact the internal components. Furthermore, by setting a gradient in the paint's reflectivity, the temperature distribution within the rice-milling vending machine's main body 1 decreases from bottom to top, encouraging a more pronounced bottom-up flow within the machine. As the hot air rises, it carries dust from the lower interior of the machine's main body 1 to the upper interior.

[0044] In another embodiment of the present application, the paint on the top cover 3 has a reflectivity greater than 80% within the visible light wavelength range, and the paint forms a matte coating on the upper surface of the top cover 3. To reduce the temperature at the top of the outdoor rice milling and vending machine, the reflectivity of the paint on the top cover 3 should be greater than 80%. The height of the outdoor rice milling and vending machine is lower than that of the surrounding buildings. To prevent glare from reflected light, a matte coating is applied to the upper surface of the top cover 3 to scatter the light that hits it and reduce specular reflection. Specific embodiment 1

[0046] In another embodiment of the present application, the ratio of the height of the blocking plate 9 to the height of the air duct 4 is 1:10, the inclination angle of the blocking plate 9 is 40°, and the total opening area of ​​the air inlet 5 is 1 / 3 of the bottom area of ​​the air duct 4. Specific embodiment 2

[0048] In another embodiment of the present application, the ratio of the height of the blocking plate 9 to the height of the air duct 4 is 1:20, the inclination angle of the blocking plate 9 is 60°, and the total opening area of ​​the air inlet 5 is 1 / 2 of the bottom area of ​​the air duct 4.

[0049] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. An automatic dust removal device for an outdoor rice milling and vending machine, comprising a rice milling and vending machine body, a silo, and a top cover disposed above the rice milling and vending machine body, characterized in that: The cyclone is connected to the interior of the rice milling vending machine body through the air outlet, air duct and air inlet.

2. The automatic dust removal device for an outdoor rice milling and vending machine according to claim 1, characterized in that: The air duct runs through the rice milling vending machine body horizontally. An air duct door is provided at one end of the air duct away from the air outlet. The opening size of the air duct door meets the requirement for the air duct to pass through. The air duct is movably connected to the rice milling vending machine body through a slide rail.

3. The automatic dust removal device for an outdoor rice milling and vending machine according to claim 2, characterized in that: The air inlets are circular and evenly distributed at the bottom of the air duct.

4. The automatic dust removal device for an outdoor rice milling and vending machine according to claim 3, characterized in that: A blocking plate inclined to the bottom surface of the air duct is provided on the side of the air inlet facing the air duct, the inclination direction of the blocking plate is toward the air outlet, the ratio of the height of the blocking plate to the height of the air duct is 1:10-20, and the inclination angle of the blocking plate is 40-60°.

5. The automatic dust removal device for an outdoor rice milling and vending machine according to any one of claims 1 to 4, characterized in that: The barn is independent of the space connected to the air duct within its height range, and the barn is provided with an independent opening at the top cover.

6. The automatic dust removal device for an outdoor rice milling and vending machine according to claim 1, characterized in that: An air inlet is provided at the bottom of the main body of the rice milling vending machine, a filter is provided at the air inlet, and a waterproof eaves is provided above the air inlet toward the outer side of the main body of the rice milling vending machine.

7. The automatic dust removal device for an outdoor rice milling and vending machine according to claim 5, characterized in that: The total area of ​​the air inlet is 1 / 3-1 / 2 of the bottom area of ​​the air duct.

8. The automatic dust removal device for an outdoor rice milling and vending machine according to claim 5, characterized in that: The side wall of the rice milling vending machine body is provided with a vending surface and a non-vending surface, the non-vending surface is not in direct contact with the internal equipment of the rice milling vending machine body, the reflectivity of the coating on the non-vending surface is 10-50% in the visible light wavelength range, and the reflectivity of the coating is gradually increased from bottom to top on the non-vending surface.

9. The automatic dust removal device for an outdoor rice milling and vending machine according to claim 5, characterized in that: The paint of the top cover has a reflectivity higher than 80% in the visible light wavelength range, and the paint forms a matte coating on the upper surface of the top cover.

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