Energy-saving rice milling device with double-layer structure

Abstract

The utility model relates to rice processing technical field, concretely is energy -saving type rice milling device of double -deck structure, including primary rice milling device body, the secondary rice milling mechanism is welded to primary rice milling device body downside, the blow mechanism is set to the rear side of secondary rice milling mechanism lower end discharge gate, the collection box is set to the secondary rice milling mechanism discharge gate downside, the impurity tank is set to the front side of collection box, the blow mechanism includes the blow box, the fan of being installed to a plurality of blow box interiors, the limiting plate of being welded to the left and right ends of blow box front side surface and the air flue of being welded to the left side surface rear end of blow box, the first air inlet pipe is set to the air flue upper surface middle position. The utility model sets up a secondary rice milling mechanism in primary rice milling mechanism body downside in the prior art, after the primary rice milling mechanism carries out the preliminary shelling to rice, the shelled rice enters the secondary rice milling mechanism and removes the skin layer, and the endosperm is directly produced in primary, so as to improve the edible quality of rice.

Description

Technical Field

[0001] This utility model relates to the field of rice processing technology, specifically to an energy-saving rice milling device with a double-layer structure. Background Technology

[0002] Rice milling equipment is a key piece of equipment in the rice processing industry chain. Its core function is to mechanically remove the husk (outer shell) and bran (chaff layer) of paddy rice, transforming it into directly edible rice. From a processing perspective, after entering the milling unit, the paddy rice first undergoes a dehulling process. Through the squeezing and friction of components such as rollers and grinding wheels, the hard husk is broken and separated from the brown rice. It then enters the whitening process, further removing the bran layer from the surface of the brown rice to obtain white rice of varying degrees of refinement. During this process, the equipment must simultaneously perform auxiliary functions such as material conveying and impurity separation (such as separating the husk, bran, and rice grains) to ensure the purity and quality of the finished rice.

[0003] Utility model patent CN219942924U discloses a rice milling device. This device includes a casing, a motor, and a rack. Support plates are welded to both sides of the casing. A motor mounting plate is fixedly connected to one end of the casing, and the motor is fixedly mounted on the mounting plate. A first gear is fixedly connected to the output end of the motor. A second gear is meshed with one side of the first gear, and a transmission rod is fixedly connected to one side of the second gear. This device, through the cooperation of its components, can control the rice flow rate and divert the rice, thereby fully milling the rice and improving work efficiency.

[0004] While the aforementioned utility model can conveniently control the rice flow rate and divert the rice, in actual processing, single-layer rice milling devices often only complete preliminary dehulling or shallow whitening. To meet the market's required refined rice standards, the semi-processed material needs to be fed into the equipment multiple times for repeated milling. This not only prolongs the processing cycle but also causes the motor and transmission components to operate under high load for extended periods, significantly increasing energy consumption. Therefore, we propose a double-layer energy-saving rice milling device. Utility Model Content

[0005] This utility model provides an energy-saving rice milling device with a double-layer structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A double-layer energy-saving rice milling device includes a primary rice milling device body, a secondary rice milling mechanism welded to the lower side of the primary rice milling device body, a blower mechanism provided behind the lower discharge port of the secondary rice milling mechanism, a collection box provided below the discharge port of the secondary rice milling mechanism, and an impurity box provided in front of the collection box.

[0008] The blower mechanism includes a blower box, several fans installed inside the blower box, limiting plates welded to the left and right ends of the front surface of the blower box, and an air duct welded to the rear end of the left side surface of the blower box. A first air inlet pipe is provided in the middle of the upper surface of the air duct, and a second air inlet pipe is provided at the left end of the upper surface of the air duct.

[0009] As a preferred technical solution, both the first air inlet pipe and the second air inlet pipe have a 7-shaped structure. The air inlet of the first air inlet pipe is located at the power source inside the secondary rice milling mechanism, and the air inlet of the second air inlet pipe is located at the power source of the primary rice milling device.

[0010] This design, with its 7-shaped air intake duct, allows for flexible arrangement and more precise collection of air from the power source.

[0011] As a preferred technical solution, the front end of the left side surface of the blower box is provided with an air inlet for connecting the air duct, and the rear surface of the fan is located in front of the front surface of the air inlet.

[0012] This design, with its clearly defined air inlet, ensures an effective connection between the air duct and the blower box, guaranteeing smooth airflow.

[0013] As a preferred technical solution, the secondary rice milling mechanism includes a rice milling box and two milling rollers rotatably connected to the left and right sides inside the rice milling box. Two transmission gears are installed on the front surface of the rice milling box and are coaxially connected to the milling rollers respectively. A motor is installed at the front end of one of the transmission gears, and a support plate is provided at the lower end of the motor. A discharge frame is welded to the lower surface of the rice milling box.

[0014] This setup involves two grinding rollers working together, driven by a motor via transmission gears, to achieve a second, precise grinding of the rice, thus improving rice milling efficiency.

[0015] As a preferred technical solution, the cross-section of the discharge frame is an isosceles trapezoidal structure that is wider at the top and narrower at the bottom, and the lower surface of the discharge frame is flush with the upper surface of the blower box.

[0016] This design, with its isosceles trapezoidal discharge frame structure, facilitates concentrated material falling and reduces material scattering. The positional relationship between the discharge frame and the blower box is designed so that the material can be immediately subjected to the blower mechanism after discharge.

[0017] As a preferred technical solution, the two transmission gears are meshed and connected, and the rolling roller is made of high-chromium cast iron and its surface is hardened.

[0018] This design, with its meshing transmission gears, ensures the synchronous counter-rotation of the two grinding rollers, resulting in more uniform rice grinding.

[0019] As a preferred technical solution, the support plate is welded to the side surface of the rice milling box, and the air inlet of the first air inlet pipe is located on one side of the motor.

[0020] This feature, with the support plate welded to the rice milling box, further enhances the stability of the motor installation and reduces vibration transmission during motor operation.

[0021] As a preferred technical solution, the main body of the single rice milling device is equipped with support plates welded on both the front and rear sides, and the blower box is welded to the front surface of the rear support plate. The front support plate has an n-shaped structure.

[0022] This design provides a reliable mounting base for the blower box with the rear support plate, ensuring the stability of the blower mechanism during operation; the n-shaped front support plate saves materials while ensuring support strength and facilitates the removal of the collection box.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] 1. A secondary rice milling mechanism is installed on the lower side of the existing primary rice milling mechanism. After the primary rice milling mechanism performs preliminary dehulling on the paddy, the dehulled paddy enters the secondary rice milling mechanism to remove the bran layer, so as to directly produce endosperm in one step to improve the eating quality of rice.

[0025] 2. During the rice milling process, the motor accumulates a lot of heat as it runs. This invention uses a blower mechanism to remove the heat from the motor. Then, the blower mechanism separates the endosperm and impurities produced by the secondary rice milling mechanism by air separation. This not only helps the motor dissipate heat but also separates the products by air separation, which is very energy-saving and environmentally friendly. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the blower mechanism in this utility model;

[0028] Figure 3 This is a schematic diagram of the air inlet structure in this utility model;

[0029] Figure 4 This is a schematic diagram of the secondary rice milling mechanism in this utility model;

[0030] The meanings of the labels in the diagram are as follows:

[0031] 100. Primary rice milling device body; 200. Blower mechanism; 210. Blower box; 220. Fan; 221. Air inlet; 230. Air duct; 240. First air inlet pipe; 250. Second air inlet pipe; 260. Limiting plate; 300. Secondary rice milling mechanism; 310. Rice milling box; 320. Milling roller; 330. Transmission gear; 340. Motor; 350. Support plate; 360. Discharge frame; 400. Collection box; 500. Impurity box. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0033] Please see Figures 1-4 This embodiment provides a technical solution:

[0034] A double-layer energy-saving rice milling device includes a primary rice milling device body 100, a secondary rice milling mechanism 300 welded to the lower side of the primary rice milling device body 100, a blower mechanism 200 provided behind the discharge port at the lower end of the secondary rice milling mechanism 300, a collection box 400 provided below the discharge port of the secondary rice milling mechanism 300, and an impurity box 500 provided in front of the collection box 400.

[0035] The blower mechanism 200 includes a blower box 210, several fans 220 installed inside the blower box 210, limiting plates 260 welded to the left and right ends of the front surface of the blower box 210, and an air duct 230 welded to the rear end of the left side surface of the blower box 210. A first air inlet pipe 240 is provided in the middle of the upper surface of the air duct 230, and a second air inlet pipe 250 is provided at the left end of the upper surface of the air duct 230. Through the above mechanism, the secondary rice milling mechanism 300 performs secondary and more refined processing on the primary processed rice produced by the primary rice milling device body 100, which can improve the quality of the final rice produced.

[0036] Furthermore, such as Figure 2 As shown, both the first air inlet pipe 240 and the second air inlet pipe 250 have a 7-shaped structure. The air inlet of the first air inlet pipe 240 is located at the power source inside the secondary rice milling mechanism 300, and the air inlet of the second air inlet pipe 250 is located at the power source of the primary rice milling device body 100. The air inlet pipes can carry away the heat generated by the motors of the two rice milling mechanisms during operation.

[0037] Furthermore, such as Figure 3 As shown, the front end of the left side surface of the blower box 210 has an air inlet 221 connected to the air supply duct 230. The rear surface of the fan 220 is located in front of the front surface of the air inlet 221. There is a gap between the fan 220 and the rear surface of the blower box 210 to facilitate the flow of air.

[0038] In this embodiment, as Figure 4 As shown, the secondary rice milling mechanism 300 includes a rice milling box 310 and two milling rollers 320 rotatably connected to the left and right sides inside the rice milling box 310. Two transmission gears 330 are installed on the front surface of the rice milling box 310 and are coaxially connected to the milling rollers 320 respectively. A motor 340 is installed at the front end of one of the transmission gears 330. A support plate 350 is provided at the lower end of the motor 340. A discharge frame 360 ​​is welded to the lower surface of the rice milling box 310. The transmission gears 330 are rotated by the motor 340, which ultimately causes the milling rollers 320 to rotate and mill the rice.

[0039] In this embodiment, as Figure 4 As shown, the discharge frame 360 ​​has an isosceles trapezoidal cross-section that is wider at the top and narrower at the bottom. The lower surface of the discharge frame 360 ​​is flush with the upper surface of the blower box 210. The discharge frame 360 ​​can guide the milled material to be discharged smoothly and avoid accumulation. The positional relationship between the discharge frame 360 ​​and the blower box 210 is designed so that the material can be immediately subjected to the action of the blower mechanism 200 after discharge, which improves the timeliness and effectiveness of impurity separation.

[0040] In this embodiment, as Figure 4 As shown, two transmission gears 330 are meshed and connected, and the rolling roller 320 is made of high chromium cast iron and its surface is hardened to harden the surface layer thickness.

[0041] In this embodiment, as Figure 4 As shown, the support plate 350 is welded to the side surface of the rice milling box 310. The air inlet of the first air inlet pipe 240 is located on one side of the motor 340. The air inlet of the first air inlet pipe 240 is close to the motor 340, which can make more efficient use of the airflow and heat generated by the motor 340 when it is working. This not only helps the motor 340 to dissipate heat, but also provides some airflow for the blower mechanism 200, saving energy.

[0042] In this embodiment, as Figure 4 As shown, support plates are welded to both the front and rear sides of the main body 100 of the single rice milling device. The blower box 210 is welded to the front surface of the rear support plate. The front support plate has an n-shaped structure. The front and rear support plates provide stable support for the main body of the single rice milling device and enhance the structural strength of the entire device. The rear support plate provides a reliable installation base for the blower box and ensures the stability of the blower mechanism during operation.

[0043] It is worth noting that the structure and working principle of the motor 340 and fan 220 involved in this embodiment are as known to those skilled in the art, and will not be described in detail here. The structure and working principle of the primary rice milling device body 100 involved in this embodiment are technologies already disclosed in the prior art, and will not be described in detail here.

[0044] In this embodiment, the energy-saving rice milling device with a double-layer structure is used by first starting the fan inside the blower mechanism 200, and then starting the power source motor 340 of the primary rice milling device body 100 and the secondary rice milling mechanism 300. The output shaft of the motor 340 controls the rotation of the transmission gear 330, which in turn drives another transmission gear 330 meshing with it to rotate. Simultaneously, the rotation of both transmission gears 330 drives the milling roller 320 inside the rice milling box 310 to rotate. When the primary rice milling device body... After the initial crushing of 100 paddy rice grains, they fall into the crushing rollers 320 of the secondary rice milling mechanism 300 for secondary fine processing. After processing by the crushing rollers 320, they finally leave the secondary rice milling mechanism 300 through the discharge frame 360. When leaving the discharge frame 360, they are sorted by the air blown out by the fan 220 inside the blower mechanism 200. The lighter husks and impurities are blown away by the wind and fall into the impurity box 500, while the heavier endosperm is less affected by the wind and falls into the collection box 400, thus completing the secondary processing and sorting of the paddy rice.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A double-layer energy-saving rice milling device, comprising a primary rice milling device body (100), characterized in that: A secondary rice milling mechanism (300) is welded to the lower side of the main body (100) of the primary rice milling device. A blower mechanism (200) is provided behind the discharge port at the lower end of the secondary rice milling mechanism (300). A collection box (400) is provided below the discharge port of the secondary rice milling mechanism (300). An impurity box (500) is provided in front of the collection box (400). The blower mechanism (200) includes a blower box (210), a plurality of fans (220) installed inside the blower box (210), a limiting plate (260) welded to the left and right ends of the front surface of the blower box (210), and an air duct (230) welded to the rear end of the left side surface of the blower box (210). A first air inlet pipe (240) is provided at the middle position of the upper surface of the air duct (230), and a second air inlet pipe (250) is provided at the left end of the upper surface of the air duct (230).

2. The energy-saving rice milling device with a double-layer structure as described in claim 1, characterized in that: Both the first air inlet pipe (240) and the second air inlet pipe (250) have a 7-shaped structure. The air inlet of the first air inlet pipe (240) is located at the power source inside the secondary rice milling mechanism (300), and the air inlet of the second air inlet pipe (250) is located at the power source of the primary rice milling device body (100).

3. The energy-saving rice milling device with a double-layer structure as described in claim 1, characterized in that: The air inlet (221) for connecting the air duct (230) is provided on the front end of the left side surface of the blower box (210), and the rear surface of the fan (220) is located in front of the front surface of the air inlet (221).

4. The energy-saving rice milling device with a double-layer structure as described in claim 1, characterized in that: The secondary rice milling mechanism (300) includes a rice milling box (310) and two milling rollers (320) rotatably connected to the left and right sides inside the rice milling box (310). Two transmission gears (330) are installed on the front surface of the rice milling box (310) and are coaxially connected to the milling rollers (320). One of the transmission gears (330) has a motor (340) installed at the front end. A support plate (350) is provided at the lower end of the motor (340). A discharge frame (360) is welded to the lower surface of the rice milling box (310).

5. The energy-saving rice milling device with a double-layer structure as described in claim 4, characterized in that: The discharge frame (360) has an isosceles trapezoidal cross-section that is wider at the top and narrower at the bottom. The lower surface of the discharge frame (360) is flush with the upper surface of the blower box (210).

6. The energy-saving rice milling device with a double-layer structure as described in claim 4, characterized in that: The two drive gears (330) are meshed together, and the rolling roller (320) is made of high-chromium cast iron and its surface is hardened.

7. The energy-saving rice milling device with a double-layer structure as described in claim 4, characterized in that: The support plate (350) is welded to the side surface of the rice milling box (310), and the air inlet of the first air inlet pipe (240) is located on one side of the motor (340).

8. The energy-saving rice milling device with a double-layer structure as described in claim 4, characterized in that: The main body (100) of the rice milling device is equipped with support plates on both the front and rear sides. The blower box (210) is welded to the front surface of the rear support plate. The front support plate has an n-shaped structure.

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