Closed rice husking machine

Abstract

The utility model relates to the technical field of brown rice processing, in particular to a closed rice husking machine which comprises a storage hopper, a feeding pipe, a rice husking bin, a first-stage rice husking roller, a second-stage rice husking roller, a third-stage rice husking roller, an exhaust fan and a bran crusher. The storage hopper is arranged on the top of the rice milling bin. The lower part of the storage hopper is connected with a feeding pipe; a first-level rice milling roller, a second-level rice milling roller and a third-level rice milling roller are arranged in the rice milling bin. The first-stage rice milling roller and the second-stage rice milling roller are symmetrically arranged; a refining roller is arranged at the upper parts of the first-stage rice milling roller and the second-stage rice milling roller; third-stage rice milling rollers are symmetrically arranged at the lower part of the second-stage rice milling roller; a discharging bin is arranged at the lower part of the third-stage rice milling roller; the bottom of the discharging bin is connected with a discharging opening; an exhaust fan is arranged in the rice milling bin; the other end of the exhaust fan is connected with the bran crusher; the rice husking machine solves the problems that a traditional rice husking machine is prone to breaking rice and unshelling is uneven.

Description

[0001] A closed rice milling machine Technical Field

[0002] This utility model relates to the field of brown rice processing technology, specifically to a closed rice milling machine. Background Technology

[0003] With the continuous improvement of rice varieties, the yield of long and thin rice has been increasing in recent years. However, due to its own characteristics, this type of rice will produce a lot of broken rice during the harvesting and threshing process. Traditional rice milling machines, due to their outdated technology, will increase the broken rice rate. In the current technology, the brown rice processed by existing rice milling machines is prone to broken rice and incomplete hulling, which affects the processing quality. Utility Model Content

[0004] The purpose of this invention is to provide a closed-type rice milling machine to solve the problems of rice breakage and uneven hulling that are common in traditional rice milling machines.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A closed rice milling machine includes a storage hopper, a feed pipe, a rice milling bin, a primary rice milling roller, a secondary rice milling roller, a tertiary rice milling roller, an exhaust fan, and a bran crusher. The storage hopper is located at the top of the rice milling bin. The feed pipe is connected to the lower part of the storage hopper. The primary, secondary, and tertiary rice milling rollers are respectively installed inside the rice milling bin. The primary and secondary rice milling rollers are arranged symmetrically. A leveling roller is installed above the primary and secondary rice milling rollers. The tertiary rice milling roller is symmetrically arranged below the secondary rice milling roller. A discharge bin is installed below the tertiary rice milling roller. A discharge port is connected to the bottom of the discharge bin. An exhaust fan is installed inside the rice milling bin. The other end of the exhaust fan is connected to the bran crusher. The bran crusher is connected to the bran discharge port.

[0007] Furthermore, a throwing plate is provided at the outlet of the primary rice milling roller and the secondary rice milling roller; a baffle plate A is provided at the front end of the throwing plate; a discharge plate is provided at the lower part of the baffle plate A; the discharge plate extends to the connection between the secondary rice milling roller and the tertiary rice milling roller; and a B is provided at the outlet of the secondary rice milling roller and the tertiary rice milling roller.

[0008] Furthermore, the rice milling bin is equipped with a bran extraction port A and a bran extraction port B; the other end of the bran extraction port A and the bran extraction port B are connected to a blower.

[0009] Furthermore, the throwing plate is configured with an arc-shaped structure; the bran extraction port A is located at the rear of the baffle plate A.

[0010] Furthermore, the gap between the first-stage, second-stage, and third-stage rice milling rollers is adjustable; the first-stage, second-stage, and third-stage rice milling rollers are made of rubber; and the first-stage, second-stage, and third-stage rice milling rollers operate at different speeds.

[0011] Furthermore, a brown rice groove is provided in a ring on the surface of the leveling roller; the brown rice groove is embedded in the surface of the leveling roller.

[0012] Furthermore, a feed valve is provided inside the feed pipe; a sieve plate is provided below the feed valve; and a collection frame is provided at the end of the sieve plate.

[0013] Compared with the prior art, the present invention can achieve one of the following beneficial effects:

[0014] 1. The rice milling chamber is equipped with a primary rice milling roller, a secondary rice milling roller, and a tertiary rice milling roller. The primary and secondary rice milling rollers are arranged symmetrically. A leveling roller is arranged above the primary and secondary rice milling rollers. The tertiary rice milling roller is arranged symmetrically below the secondary rice milling roller. This multi-stage segmented extrusion and hulling process improves the integrity of rice grains and the hulling effect during the rice milling process.

[0015] 2. The gap between the primary, secondary, and tertiary rice milling rollers is adjustable; the primary, secondary, and tertiary rice milling rollers are made of rubber; the primary, secondary, and tertiary rice milling rollers operate at different speeds, allowing for adjustment of the gap between the rollers to suit different rice varieties and improve milling efficiency; furthermore, the different speeds of the rollers increase the hulling rate during the rice grain compression process.

[0016] 3. A feed valve is provided inside the feed pipe; a sieve plate is provided below the feed valve; a collection frame is provided at the end of the sieve plate, which can realize the preliminary screening of brown rice before milling and filter out most of the impurities in the brown rice.

[0017] 4. It can process brown rice in stages by setting up multi-stage rice milling rollers. During each stage of rice milling, negative pressure air separation of impurities is carried out to improve the fineness of rice milling and realize the automatic separation of brown rice. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the brown rice trough structure of this utility model. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] A closed rice milling machine includes a storage hopper 1, a feed pipe 2, a rice milling bin 3, a primary rice milling roller 4, a secondary rice milling roller 5, a tertiary rice milling roller 6, an exhaust fan 7, and a bran crusher 8; the storage hopper 1 is located on top of the rice milling bin 3. The storage hopper 1 is connected to a feed pipe 2 at its lower part; the rice milling bin 3 is equipped with a primary rice milling roller 4, a secondary rice milling roller 5, and a tertiary rice milling roller 6; the primary rice milling roller 4 and the secondary rice milling roller 5 are arranged symmetrically; a leveling roller 301 is installed above the primary rice milling roller 4 and the secondary rice milling roller 5; the tertiary rice milling roller 6 is symmetrically installed below the secondary rice milling roller 5; a discharge bin 304 is installed below the tertiary rice milling roller 6; a discharge port 302 is connected to the bottom of the discharge bin 304; an exhaust fan 7 is installed inside the rice milling bin 3; the other end of the exhaust fan 7 is connected to a bran crusher 8; the bran crusher 8 is connected to a bran discharge port 303. During use: brown rice is fed into the storage hopper, and the feeding speed is stably controlled by the feeding valve in the feed pipe, so that the brown rice grains are stably transported into the multi-stage rice milling rollers for milling and dehulling. After grading and dehulling, the rice and bran are separated by negative pressure screening by the exhaust fan, thus efficiently completing the milling of brown rice.

[0023] The gap between the primary rice milling roller 4, the secondary rice milling roller 5, and the tertiary rice milling roller 6 is adjustable; the primary rice milling roller 4, the secondary rice milling roller 5, and the tertiary rice milling roller 6 are made of rubber; the primary rice milling roller 4, the secondary rice milling roller 5, and the tertiary rice milling roller 6 operate at different speeds, which can improve the rice milling separation effect through the set differential motion of the rice milling rollers, and reduce damage to the rice by using rubber structural material.

[0024] The surface of the leveling roller 301 is provided with a brown rice groove 3011 in a ring shape; the brown rice groove 3011 is embedded in the surface of the leveling roller 301, which can realize the uniform and constant speed feeding of brown rice grains into the rice milling roller by the leveling roller.

[0025] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter combination within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A closed type rice mill characterized by: Including the storage hopper (1), the feed pipe (2), the rice mill bin (3), the first rice mill roller (4), the second rice mill roller (5), the third rice mill roller (6), the air extractor (7) and the bran crusher (8), the storage hopper (1) is set to be arranged at the top of the rice mill bin (3).

2. A closed type rice milling machine as claimed in claim 1 wherein: The lower part of the storage hopper (1) is connected with the feed pipe (2); the rice mill bin (3) is internally provided with the first rice mill roller (4), the second rice mill roller (5) and the third rice mill roller (6); the first rice mill roller (4) and the second rice mill roller (5) are symmetrically arranged; the upper part of the first rice mill roller (4) and the second rice mill roller (5) is provided with the uniform material roller (301); the lower part of the second rice mill roller (5) is symmetrically provided with the third rice mill roller (6); the lower part of the third rice mill roller (6) is provided with the discharge bin (304); the bottom of the discharge bin (304) is connected with the discharge port (302); the rice mill bin (3) is internally provided with the air extractor (7); the other end of the air extractor (7) is connected with the bran crusher (8); the bran crusher (8) is connected with the bran discharge port (303).

3. The closed type rice milling machine according to claim 1, wherein: The outlet of the first rice mill roller (4) and the second rice mill roller (5) is provided with the material throwing plate (305); the front end of the material throwing plate (305) is provided with the material blocking plate A (306); the lower part of the material blocking plate A (306) is provided with the discharging plate (307); the discharging plate (307) extends to the connection part of the second rice mill roller (5) and the third rice mill roller (6); the outlet of the second rice mill roller (5) and the third rice mill roller (6) is provided with B (308).

4. The closed type rice milling machine according to claim 1, wherein: The rice mill bin (3) is internally provided with the bran extractor A (701) and the bran extractor B (702); the other end of the bran extractor A (701) and the bran extractor B (702) is connected with the air extractor (7).

5. The closed type rice milling machine according to claim 3, wherein: The material throwing plate (305) is provided in an arc shape; the bran extractor A (701) is arranged at the rear part of the material blocking plate A (306).

6. A closed type rice milling machine as claimed in claim 1 wherein: The gap between the first rice mill roller (4), the second rice mill roller (5) and the third rice mill roller (6) is adjustable; the first rice mill roller (4), the second rice mill roller (5) and the third rice mill roller (6) are provided in a rubber structure material; the running speed of the first rice mill roller (4), the second rice mill roller (5) and the third rice mill roller (6) is different.

7. The closed type rice milling machine according to claim 2, wherein: The surface of the uniform material roller (301) is annularly provided with the rough rice groove (3011); the rough rice groove (3011) is embedded on the surface of the uniform material roller (301).

8. The closed type rice milling machine according to claim 1, wherein: The feed pipe (2) is internally provided with the feed valve (201); the lower part of the feed valve (201) is provided with the sieve plate (202); the end of the sieve plate (202) is provided with the collection frame (203).

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