Rice processing bran screening device

Abstract

The utility model provides a chaff screening device for rice processing, which belongs to the technical field of rice processing and comprises a chaff screening barrel, and a support is fixedly mounted at the bottom of the chaff screening barrel. The driving assembly is installed in an inner cavity of the support. The rotating cylinder penetrates through the bottom of the chaff screening barrel from the center of the top of the chaff screening barrel and extends to an inner cavity of the support, the rotating cylinder and the chaff screening barrel are connected through a sealing bearing, cavities are formed in the top and the bottom of the rotating cylinder, and a rice inlet and an exhaust port are formed in the circumferential side wall of the rotating cylinder; the chaff screening and rice collecting assembly comprises two chaff screening net racks fixedly connected to the outer wall of the rotating cylinder in a sleeving mode, a material guiding cover and an air guiding and collecting assembly, the air guiding and collecting assembly is installed on the right side of the chaff screening barrel, and rice is screened twice through the two chaff screening net racks, so that three kinds of rice with different sizes can be sorted out; and the effect of separating rice while screening the bran is achieved.

Description

Technical Field

[0001] This utility model relates to the field of rice processing technology, specifically to a rice processing sieve device. Background Technology

[0002] The modern rice processing flow includes: Hulling: Paddy rice first passes through a hulling machine to remove the hard outer shell (becoming "rice husk" or "rice bran"), resulting in brown rice. Milling: The brown rice then enters a rice milling machine, where friction and grinding remove the bran layer and germ from the surface of the rice grains, resulting in white rice. Sieving (separation): The mixture after milling contains white rice, broken rice, and bran. At this stage, equipment such as wind separators and vibrating screens are used to utilize differences in specific gravity and particle size to blow away or sift out the lighter bran, ultimately obtaining pure commercial rice.

[0003] In existing rice bran sieving processes, only bran sieving can be performed, but rice sieving cannot be performed, requiring additional sorting. To address this, we propose a rice processing bran sieving device. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the shortcomings of the prior art, the present invention overcomes the problem in the existing rice sifting process mentioned above, which can only sift chaff and cannot sift rice, requiring additional sorting.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A rice processing sifting device, comprising

[0009] A sifting barrel, which is cylindrical in shape, is used for sifting chaff.

[0010] The bracket is fixedly installed at the bottom of the sieve bucket;

[0011] The drive assembly is installed inside the bracket.

[0012] The rotating cylinder extends from the top center of the sieving bucket through the bottom of the sieving bucket to the inner cavity of the support. The connection between the rotating cylinder and the sieving bucket is through a sealed bearing. The top and bottom of the rotating cylinder are both provided with cavities. The circumferential side wall of the rotating cylinder is provided with a rice inlet and an exhaust outlet. The rice inlet is connected to the upper cavity of the rotating cylinder, and the exhaust outlet is connected to the lower cavity of the rotating cylinder. The drive assembly drives the rotating cylinder to rotate.

[0013] The rice sieving and hulling assembly includes two sets of rice sieving frames fixedly sleeved on the outer wall of the rotating cylinder and a set of guide covers, with the guide covers located at the bottom.

[0014] The bottom of the right side wall of the sieve bucket is provided with a discharge port, which is located above the guide cover. Two sets of collection boxes are fixedly installed on the right side wall of the sieve bucket, and the two sets of collection boxes are respectively installed above the two sets of sieve mesh frames.

[0015] The air guiding and collecting assembly is installed on the right side of the sieve barrel and is rotatably connected to the bottom of the rotating cylinder.

[0016] The feed hopper is fixedly installed on the top of the sieve bucket by a bracket, and the bottom of the feed hopper is rotatably connected to the rotating drum;

[0017] In this process, air is blown into the rotating cylinder through the air collection component to blow the rice husk and rice collection component, and the blown-up rice husk residue is collected.

[0018] Further defining the above technical solution, the drive assembly includes a motor fixedly installed on the right side of the inner cavity of the bracket, a drive gear fixedly installed on the top power output end of the motor, and a driven gear meshing with the left side of the drive gear, the driven gear being fixedly sleeved on the bottom outer wall of the rotating cylinder.

[0019] Further defining the above technical solution, a hemispherical protrusion is fixedly installed at the bottom of the inner cavity of the upper cavity of the rotating cylinder, the highest point of the bottom of the inner cavity of the rice inlet is level with the lowest point of the upper cavity of the rotating cylinder, and the rice inlet is set at an angle downward.

[0020] Further defining the above technical solution, there are two sets of exhaust ports, and the two sets of exhaust ports are respectively located in the inner cavities of the two sets of sieve mesh frames, with the exhaust ports set at an angle upwards.

[0021] Further defining the above technical solution, the air collection assembly includes an air inlet rotatably installed in the cavity at the bottom of the rotating cylinder, an air inlet channel is fixedly connected to the bottom of the air inlet, and the left side of the air inlet channel penetrates the left side wall of the support and extends to the outside of the support. A blower is fixedly installed in the inner cavity of the air inlet channel, a filter box is fixedly connected to the left side of the air inlet channel, and a chaff discharge hopper is provided at the bottom of the filter box.

[0022] Further defining the above technical solution, two sets of air guide hoods are provided on the left side of the sieve bucket from top to bottom, and the air guide hoods are connected to the sieve bucket. The upper air guide hood is located above the upper sieve mesh frame, and the lower air guide hood is located above the lower sieve mesh frame. An air guide channel is connected to the left side of the air guide hood, and a vertical air passage is connected to the left side of the air guide channel. The bottom of the vertical air passage is connected to the filter box.

[0023] Further defining the above technical solution, inclined baffles are fixedly installed at the top and bottom of the filter box cavity, and the two sets of baffles are arranged in parallel. Both sets of baffles are located on the right side of the connection between the vertical air passage and the filter box. A filter screen frame is installed on the right side of the filter box cavity, and an installation port that matches the filter screen frame is opened on the right side of the front side wall of the filter box.

[0024] To further define the above technical solution, a rice scraper is fixedly installed on the top of both the rice sieve frame and the material guide cover.

[0025] (III) Beneficial Effects

[0026] Compared with the prior art, this utility model provides a rice sieving device that simultaneously sorts rice using a sieving box, which has the following beneficial effects:

[0027] (1) The rice is screened twice by two sets of sieve frames, which can separate three types of rice that are not too big, thus achieving the function of sorting rice while sieving chaff.

[0028] (2) Air circulation is achieved by a set of blowers. In this way, air is blown into the sieving bucket to blow up the chaff and at the same time the chaff is carried into the filter box for collection. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[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 chaff screen frame structure of this utility model;

[0032] Figure 3 This is a schematic diagram of the material guide cover structure of this utility model;

[0033] Figure 4 This is a schematic diagram of the filter box structure of this utility model.

[0034] The components are as follows: 1. Bran sieving bucket; 2. Support frame; 3. Motor; 4. Drive gear; 5. Driven gear; 6. Rotating cylinder; 601. Rice inlet; 602. Exhaust outlet; 7. Bran sieving frame; 8. Guide cover; 801. Rice scraper; 9. Discharge outlet; 10. Collection box; 11. Air inlet; 12. Air inlet channel; 13. Blower; 14. Filter box; 1401. Baffle; 1402. Filter frame; 1403. Mounting port; 15. Bran discharge hopper; 16. Air guide cover; 17. Air guide channel; 18. Vertical air channel; 19. Feed hopper. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-4 The present invention will be described in further detail below.

[0036] Example 1: This example provides a rice processing sifting device, such as... Figure 1-3 As shown, this method can solve the problem that existing rice sifting processes can only sift bran and cannot sift rice, requiring additional sorting.

[0037] The sifting bucket 1 is cylindrical and used for sifting chaff.

[0038] Support 2 is fixedly installed at the bottom of the sieve bucket 1;

[0039] The drive assembly is installed in the inner cavity of the bracket 2. The drive assembly includes a motor 3 fixedly installed on the right side of the inner cavity of the bracket 2. A drive gear 4 is fixedly installed on the top power output end of the motor 3, and a driven gear 5 is meshed on the left side of the drive gear 4. The driven gear 5 is fixedly sleeved on the bottom outer wall of the rotating cylinder 6.

[0040] The rotating cylinder 6 extends from the top center of the sieve bucket 1 through the bottom of the sieve bucket 1 to the inner cavity of the support 2. The connection between the rotating cylinder 6 and the sieve bucket 1 is through a sealed bearing. The top and bottom of the rotating cylinder 6 are provided with cavities. The circumferential side wall of the rotating cylinder 6 is provided with a rice inlet 601 and an exhaust port 602. The rice inlet 601 is connected to the upper cavity of the rotating cylinder 6, and the exhaust port 602 is connected to the lower cavity of the rotating cylinder 6. The driving component drives the rotating cylinder 6 to rotate. A hemispherical protrusion is fixedly installed at the bottom of the upper cavity of the rotating cylinder 6. The highest point of the bottom of the inner cavity of the rice inlet 601 is level with the bottom of the upper cavity of the rotating cylinder 6, and the rice inlet 601 is inclined downward. There are two sets of exhaust ports 602, and the two sets of exhaust ports 602 are respectively located in the inner cavities of the two sets of sieve mesh frames 7. The exhaust ports 602 are inclined upward.

[0041] The rice sieving and hulling assembly includes two sets of rice sieving frames 7 and a set of guide covers 8, which are fixedly sleeved on the outer wall of the rotating cylinder 6 from top to bottom. The two sets of rice sieving frames 7 and the set of guide covers 8 are arranged at equal intervals, and the guide cover 8 is located at the bottom. A rice scraper 801 is fixedly installed on the top of both the rice sieving frames 7 and the guide covers 8. The mesh diameter of the upper rice sieving frame 7 is larger than that of the lower rice sieving frame 7.

[0042] The right side wall of the sieve bucket 1 has a discharge port 9 at the bottom, and the discharge port 9 is located above the guide cover 8. Two sets of collection boxes 10 are fixedly installed on the right side wall of the sieve bucket 1, and the two sets of collection boxes 10 are respectively installed above the two sets of sieve mesh frames 7. The collection boxes 10 are connected to the inner cavity of the sieve bucket 1 through the through-hole. The bottom of the collection box 10 is provided with an opening that can be connected to an external collection bag.

[0043] An air guiding and collecting assembly is installed on the right side of the sieve barrel 1 and is rotatably connected to the bottom of the rotating cylinder 6.

[0044] The feed hopper 19 is fixedly installed on the top of the sieve bucket 1 by the bracket 2, and the bottom of the feed hopper 19 is rotatably connected to the rotating cylinder 6.

[0045] In this process, air is blown into the rotating cylinder 6 through the air guide and collection component to blow the rice husk and rice collection component, and to collect the rice husk residue blown up.

[0046] Based on the above characteristics, during the sieving process, the motor 3 drives the driven gear 5 to rotate via the drive gear 4, causing the rotating drum 6 to rotate. The rotation of the rotating drum 6 drives the sieving frame 7 and the guide cover 8 to rotate. The rice to be sieving is conveyed through the feed hopper 19 into the cavity above the rotating drum 6, and then discharged through the rice inlet 601 into the sieving bucket 1. It first undergoes initial sieving through the upper sieving frame 7. As the sieving frame 7 rotates, under the action of centrifugal force, larger particles... Larger rice grains and husks remain above the upper sieve frame 7, while smaller grains fall below and undergo secondary screening on the lower sieve frame 7. Even smaller grains or husks fall onto the bottom guide cover 8. Under the action of the scraper plate 801, the rice grains or husks above the sieve frame 7 and guide cover 8 are gathered together and discharged from the opening and discharge port 9 connected to the collection box 10 for collection.

[0047] During the sieving process, the air guiding and collecting component blows air into the rotating cylinder 6, and the air is discharged through the exhaust port 602. This blows the material on the sieving screen frame 7, reducing the material from getting stuck in the holes, and also blowing up the lighter chaff for collection. Finally, the chaff is carried into the air guiding and collecting component for collection along with the air.

[0048] By using two sets of sieve frames to screen the rice twice, three types of rice of similar sizes can be separated, achieving the effect of sorting rice while sifting chaff.

[0049] Example 2: As Figure 1 and 4 As shown, this embodiment is based on the above implementation, and the technical problem solved by this embodiment compared with the above embodiment 1 is: how to collect rice husks. The difference from the above embodiment is that: the air guiding and collecting assembly includes an air inlet 11 rotatably installed in the bottom cavity of the rotating cylinder 6, an air inlet channel 12 is fixedly connected to the bottom of the air inlet 11, and the left side of the air inlet channel 12 penetrates the left side wall of the support 2 and extends to the outside of the support 2. A blower 13 is fixedly installed in the inner cavity of the air inlet channel 12, and a filter box 14 is fixedly connected to the left side of the air inlet channel 12. A rice husk discharge hopper 15 is provided at the bottom of the filter box 14, and a box cover is movably installed at the bottom of the rice husk discharge hopper 15. The box cover can be threadedly connected to the bottom of the rice husk discharge hopper 15.

[0050] Two sets of air guide hoods 16 are arranged from top to bottom on the left side of the sieve barrel 1, and the air guide hoods 16 are connected to the sieve barrel 1. The upper air guide hood 16 is located above the upper sieve mesh frame 7, and the lower air guide hood 16 is located above the lower sieve mesh frame 7. The left side of the air guide hood 16 is connected to the air guide channel 17, and the left side of the air guide channel 17 is connected to the vertical air channel 18. The bottom of the vertical air channel 18 is connected to the filter box 14.

[0051] Inclined baffles 1401 are fixedly installed at the top and bottom of the inner cavity of the filter box 14, and the two sets of baffles 1401 are arranged in parallel. Both sets of baffles 1401 are located on the right side of the connection between the vertical air passage 18 and the filter box 14. A filter screen frame 1402 is installed on the right side of the inner cavity of the filter box 14. An installation port that matches the filter screen frame 1402 is opened on the right side of the front side wall of the filter box 14. The filter screen frame 1402 is fixedly installed on the front side of the filter box 14 by bolts.

[0052] Based on the above features, the working principle of this utility model is as follows: When the air collection component is working, the blower 13 works, blowing air into the rotating cylinder 6 through the air inlet 12 and the air inlet 11. The air then blows up the lighter rice husks, which then enter the air guide channel 17 through the air guide cover 16, and finally are transported to the filter box 14 through the vertical air passage 18. The filter box 14 separates and filters the air and rice husks. The rice husks are left in the filter box 14, and the air is blown back into the rice husk sieving bucket 1 by the blower 13.

[0053] When rice husks enter the filter box 14, they are blocked by two parallel baffles 1401 that are alternately arranged vertically. Since the baffles 1401 are inclined, the rice husks are more easily blocked in the filter box 14. The filter screen frame 1402 filters the air, so that the rice husks in the air are blocked on the left side of the filter screen frame 1402. During use, the filter screen frame 1402 needs to be cleaned regularly, and the rice husks in the filter box 14 can be cleaned by opening the box cover at the bottom of the rice discharge hopper 15.

[0054] It should be further explained that the air guide hood 16 is located at a higher position. The rice husks are lighter and will be blown up, making it easier for them to enter the air guide hood 16 at a higher position. The air guide hood 16 also has suction, making it easy for rice to enter. When the rice sieve frame 7 and the guide hood 8 rotate, the rice husks on them will be more easily thrown up under the action of centrifugal force, and the rice will be diffused to the inner wall of the rice sieve bucket 1, so that it can be better collected under the action of the rice scraper 801.

[0055] Both the motor 3 and the blower 13 are commercially available and are equipped with corresponding control circuits, so they only need to be switched on and off.

[0056] The above description is a further detailed explanation of the present invention in conjunction with specific preferred embodiments, which is intended to enable those skilled in the art to understand and apply the present invention. However, it should not be assumed that the specific implementation of the present invention is limited to these descriptions.

Claims

1. A rice processing sifting device, characterized in that, include A sifting barrel, which is cylindrical in shape, is used for sifting chaff. The bracket is fixedly installed at the bottom of the sieve bucket; The drive assembly is installed inside the bracket. The rotating cylinder extends from the top center of the sieving bucket through the bottom of the sieving bucket to the inner cavity of the support. The connection between the rotating cylinder and the sieving bucket is through a sealed bearing. The top and bottom of the rotating cylinder are both provided with cavities. The circumferential side wall of the rotating cylinder is provided with a rice inlet and an exhaust outlet. The rice inlet is connected to the upper cavity of the rotating cylinder, and the exhaust outlet is connected to the lower cavity of the rotating cylinder. The drive assembly drives the rotating cylinder to rotate. The rice sieving and hulling assembly includes two sets of rice sieving frames fixedly sleeved on the outer wall of the rotating cylinder and a set of guide covers, with the guide covers located at the bottom. The bottom of the right side wall of the sieve bucket is provided with a discharge port, which is located above the guide cover. Two sets of collection boxes are fixedly installed on the right side wall of the sieve bucket, and the two sets of collection boxes are respectively installed above the two sets of sieve mesh frames. The air guiding and collecting assembly is installed on the right side of the sieve barrel and is rotatably connected to the bottom of the rotating cylinder. The feed hopper is fixedly installed on the top of the sieve bucket by a bracket, and the bottom of the feed hopper is rotatably connected to the rotating drum; In this process, air is blown into the rotating cylinder through the air collection component to blow the rice husk and rice collection component, and the blown-up rice husk residue is collected.

2. The rice processing sifting device according to claim 1, characterized in that, The drive assembly includes a motor fixedly installed on the right side of the bracket cavity. A drive gear is fixedly installed on the top power output end of the motor, and a driven gear is meshed on the left side of the drive gear. The driven gear is fixedly sleeved on the bottom outer wall of the rotating cylinder.

3. The rice processing sifting device according to claim 1, characterized in that, A hemispherical protrusion is fixedly installed at the bottom of the upper cavity of the rotating cylinder. The highest point of the bottom of the rice inlet is level with the bottom of the upper cavity of the rotating cylinder, and the rice inlet is set at an angle downward.

4. The rice processing sifting device according to claim 1, characterized in that, There are two sets of exhaust ports, and the two sets of exhaust ports are located one-to-one in the inner cavity of the two sets of sieve mesh frames. The exhaust ports are set at an angle upward.

5. The rice processing sifting device according to claim 1, characterized in that, The air collection assembly includes an air inlet rotatably installed in the cavity at the bottom of the rotating cylinder. An air inlet channel is fixedly connected to the bottom of the air inlet, and the left side of the air inlet channel penetrates the left side wall of the support and extends to the outside of the support. A blower is fixedly installed in the inner cavity of the air inlet channel, and a filter box is fixedly connected to the left side of the air inlet channel. A chaff discharge hopper is provided at the bottom of the filter box.

6. The rice processing sifting device according to claim 5, characterized in that, Two sets of air guide hoods are installed on the left side of the sieving bucket from top to bottom. The air guide hoods are connected to the sieving bucket. The upper air guide hood is located above the upper sieving mesh frame, and the lower air guide hood is located above the lower sieving mesh frame. An air guide channel is connected to the left side of the air guide hood. A vertical air channel is connected to the left side of the air guide channel. The bottom of the vertical air channel is connected to the filter box.

7. The rice processing sifting device according to claim 6, characterized in that, Inclined baffles are fixedly installed at the top and bottom of the filter box cavity, and the two sets of baffles are arranged in parallel. Both sets of baffles are located on the right side of the connection between the vertical air passage and the filter box. A filter screen frame is installed on the right side of the filter box cavity, and an installation port for matching the filter screen frame is opened on the right side of the front side wall of the filter box.

8. The rice processing sifting device according to claim 1, characterized in that, Rice scrapers are fixedly installed on the top of both the rice sieve frame and the material guide cover.

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