A rice chaff removal device

Abstract

The present invention relates to a rice chaff removing device, comprising a casing, a first feed port being installed at the top of the casing, a first support plate being arranged inside the casing, a turntable being installed on the first support plate, the turntable being inclined and extending outward to form a truncated cone-shaped protective cover, the top of the truncated cone-shaped protective cover being bent inward to form a first blocking portion, an end of the first blocking portion not connected to the truncated cone-shaped protective cover forming a second feed port on the inner side, the second feed port being arranged corresponding to the first feed port; a plurality of first through holes for rice to pass through are arranged on the truncated cone-shaped protective cover; a feed channel is arranged at a position of the first support plate corresponding to the truncated cone-shaped protective cover; a rice chaff outlet, a clean rice outlet and a ventilation pipe are arranged on the bottom surface of the casing, one end of the ventilation pipe is located outside the casing for connecting a fan, and the other end is located inside the casing for guiding wind generated by the operation of the fan to the rice falling through the third channel, and the rice chaff of the rice chaff removing device provided by the present invention is not easy to cover the clean rice.

Description

Technical Field

[0001] The invention belongs to the technical field of grain processing equipment, and in particular relates to a rice bran removing device. Background Art

[0002] After rice is harvested, it usually needs to be dried and hulled before it can be stored as food. The original method of hulling is to lift the rice in a ventilated place with tools and use wind to separate the clean rice (the remaining part of the rice after removing the hulls) from the hulls. This method is time-consuming and labor-intensive. For this reason, people subsequently made rice hulling machines. There are two main types of rice hulling machines available:

[0003] One method is to set a feed inlet on the top of the casing so that the rice enters the feed inlet and falls to form a height difference with the bottom. A fan is installed at the bottom of the casing to blow air horizontally to the falling rice, so that the clean rice and rice bran are separated and collected separately. This method has the following problems: some rice bran is coated on the clean rice and is not easy to fall off, resulting in poor rice bran removal effect;

[0004] Another method is to add a plurality of rollers to the above-mentioned rice chaff remover to form a rolling result. Although this improves the rice chaff removal effect, part of the clean rice is squeezed and broken during the chaff removal process. Summary of the invention

[0005] In view of the problems existing in the above-mentioned prior art, the object of the present invention is to provide a rice bran removing device with good bran removal effect and low clean rice breakage rate.

[0006] In order to achieve the above-mentioned object of the invention, a technical solution provided by the present invention is as follows:

[0007] A rice chaff removing device comprises a casing, a first feed port is installed at the top of the casing, a first support plate is arranged inside the casing, a turntable is installed on the first support plate, the turntable is inclined and extends outward to form a truncated cone-shaped protective cover, the top of the truncated cone-shaped protective cover is bent inward to form a first blocking part, and the end of the first blocking part that is not connected to the truncated cone-shaped protective cover forms a second feed port on the inner side, and the second feed port is arranged corresponding to the first feed port; a plurality of first through holes for rice to pass through are arranged on the truncated cone-shaped protective cover; a feed channel is arranged on the first support plate at a position corresponding to the truncated cone-shaped protective cover; a rice chaff outlet, a clean rice outlet and a ventilation pipe are arranged on the bottom surface of the casing, one end of the ventilation pipe is located outside the casing for connecting to a fan, and the other end is located inside the casing for guiding wind generated by the operation of the fan to the rice falling through the third channel.

[0008] Preferably, the clean rice outlet is located in the middle of the bottom surface of the casing, and the rice bran outlet is close to the edge of the bottom surface of the casing; a material guide pipe is arranged below the first support plate, the material guide pipe is arranged obliquely, the bottom end of the material guide pipe is arranged corresponding to the clean rice outlet, and the top end is fixed on the side wall of the casing; the feed channel is connected with the inside of the material guide pipe, and the connection position is close to the top end of the material guide pipe; a first partition is arranged in the material guide pipe, and the first partition divides the material guide pipe into a first flow channel and a second flow channel, and the first flow channel is located at Above the second flow channel, a second partition and a third partition are arranged on the first partition, the second partition is located in the first flow channel, a discharge port is arranged on the position of the material guide tube corresponding to the first flow channel, and the discharge port is located on the side of the partition facing away from the feed channel; the third partition is located in the second flow channel, on the side of the second partition facing the feed channel, and a pouring port is arranged on the first partition at a position between the second partition and the third partition; the ventilation pipe is arranged at one end located in the casing facing the bottom end of the material guide tube.

[0009] Preferably, the third partition is inclined relative to the first partition, with the top end connected to the first partition and the bottom end connected to the bottom surface of the guide tube, and the distance from the top end of the third partition to the second partition is greater than the distance from the bottom end to the second partition.

[0010] Preferably, the feed channel is a third feed port, the third feed port is connected to a pouring pipe, the material guide pipe is connected to the material guide pipe; and a support seat is fixedly provided at the bottom end of the casing.

[0011] Preferably, an air inlet duct is horizontally arranged on the casing, the air inlet duct is located above the first blocking portion, one end of the air inlet duct is located outside the casing for connecting to an air supply device, and the other end is located inside the casing; the air inlet duct forms a bend below the first feeding port, so that the air inlet duct forms a vertical portion at the first feeding port, a cover body is rotatably connected to the vertical portion, the top of the cover body is circular, and the bottom is a truncated cone with a top diameter smaller than the bottom diameter; the vertical portion is connected to a thickened tube below the cover body, the bottom end of the thickened tube is closed, and a plurality of air outlet holes are evenly arranged on the thickened tube at a position below the cover body, a fourth partition is provided in the thickened tube at a position located in the cover body, a connecting hole is provided in the middle position of the fourth partition, the diameter of the connecting hole is smaller than the diameter of the air inlet duct, a driving hole is provided at the top of the thickened tube, and fan blades are provided at a position corresponding to the driving hole on the cover body.

[0012] Preferably, the fan blades and the driving holes are both multiple and are circumferentially arranged with the vertical portion as a reference.

[0013] Preferably, the bottom end of the cover body is lower than the top end of the first blocking portion.

[0014] Preferably, a baffle is connected above the first blocking portion, and the baffle is arranged around the first blocking portion to form a cylindrical structure.

[0015] When the rice bran removing device provided by the present invention is in use, the rice enters from the first feed port and falls onto the turntable. The turntable rotates so that the rice moves toward the truncated cone-shaped protective cover under the action of centrifugal force and is thrown out through the first through hole. In the process of the rice moving and being thrown out, relative friction is generated between the rice particles and the turntable, the truncated cone-shaped protective cover and the first through hole, and between the rice particles, so that the rice bran is not easily coated on the clean rice; after the rice is thrown out, it falls through the third channel. In the process of falling, the ventilation pipe blows air to the rice to separate the clean rice from the rice bran. The clean rice outlet and the rice bran outlet are set according to the falling positions of the clean rice and the rice bran, so that the separated clean rice and rice bran can be respectively discharged through the clean rice outlet and the rice bran outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is one of the structural schematic diagrams of a rice bran removal device of the present invention;

[0017] Figure 2 for Figure 1 A magnified view at point A;

[0018] Figure 3 This is a schematic diagram of the installation structure of the material guide pipe;

[0019] Figure 4 This is a second structural schematic diagram of a rice bran removal device of the present invention;

[0020] Figure 5 It is a schematic diagram of the installation structure of the cover;

[0021] Reference numerals in the figure: casing 1, first feed port 2, first support plate 3, turntable 4, truncated cone protective cover 5, first blocking portion 6, second feed port 7, first through hole 8, third feed port 9, pouring pipe 9a, rice bran outlet 10, clean rice outlet 11, ventilation pipe 12, material guide pipe 13, first partition 14, first flow channel 15, second flow channel 16, second partition 17, discharge port 18, third partition 19, pouring port 20, support seat 21, air inlet pipe 22, vertical portion 23, cover body 24, thickened tube 25, air outlet 26, fourth partition 27, connecting hole 28, drive hole 29, fan blade 30, baffle 31. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] The present invention provides a rice bran removal device, see Figure 1 and Figure 2 , comprising a casing 1, a first feed port 2 is installed at the top of the casing, a first support plate 3 is arranged inside the casing, a turntable 4 is installed on the first support plate, the turntable is inclined and extends outward to form a truncated cone-shaped protective cover 5, the top of the truncated cone-shaped protective cover is bent inward to form a first blocking portion 6 to prevent the rice from crossing the truncated cone-shaped protective cover during being thrown out, and the end of the first blocking portion that is not connected to the truncated cone-shaped protective cover forms a second feed port 7 on the inside, the second feed port is arranged corresponding to the first feed port, and the diameter is larger than the diameter of the first feed port; the truncated cone-shaped protective cover The cover is evenly provided with a plurality of first through holes 8 for the passage of rice, and the first through holes can be arranged tilted upward or horizontally; a feed channel is arranged at a position of the first support plate corresponding to the truncated cone-shaped protective cover, and in this embodiment, the feed channel is a third feed port 9, and the third feed port can be multiple, and is arranged circumferentially with the disc as a reference; a rice bran outlet 10, a clean rice outlet 11 and a ventilation pipe 12 are arranged on the bottom surface of the casing, one end of the ventilation pipe is located outside the casing for connecting a fan, and the other end is located inside the casing for guiding the wind generated by the operation of the fan to the rice falling through the third channel.

[0024] When the above-mentioned rice chaff removing device is in use, the rice enters from the first feed inlet and falls onto the turntable. The rotation of the turntable causes the rice to move toward the truncated cone-shaped protective cover under the action of centrifugal force and be thrown out through the first through hole. In the process of the rice moving and being thrown out, relative friction will be generated between the rice particles and the turntable, the truncated cone-shaped protective cover and the first through hole, and between the rice particles, making it difficult for the rice chaff to be coated on the clean rice; after being thrown out, the rice falls through the third channel. In the process of falling, the ventilation pipe blows air to the rice to separate the clean rice and rice chaff. The clean rice outlet and the rice chaff outlet are arranged according to the falling positions of the clean rice and rice chaff, so that the separated clean rice and rice chaff can be respectively discharged through the clean rice outlet and the rice chaff outlet.

[0025] This structure does not require rollers to crush the rice to remove rice bran, and the net rice breakage rate is low.

[0026] As a preferred embodiment, see Figure 1-Figure 3, the clean rice outlet is located in the middle position of the bottom surface of the casing, and the rice bran outlet is close to the edge position of the bottom surface of the casing; a guide pipe 13 is arranged below the first support plate, the guide pipe is inclined, the bottom end of the guide pipe is arranged corresponding to the clean rice outlet, and the top end is fixed on the side wall of the casing; the feed channel is connected with the inside of the guide pipe, and the connection position is close to the top end of the guide pipe; a first partition 14 is arranged in the guide pipe, the first partition divides the guide pipe into a first flow channel 15 and a second flow channel 16, the first flow channel is located above the second flow channel, a second partition 17 and a third partition 19 are arranged on the first partition, the second partition is located in the first flow channel, and a discharge port 18 is arranged on the guide pipe at a position corresponding to the first flow channel, and the discharge port is located on the side of the partition facing away from the feed channel; the third partition is located at the second In the flow channel, the second partition is located on a side facing the feed channel, and a discharge port 20 is arranged on the first partition at a position between the second partition and the third partition; the ventilation pipe is arranged at one end located in the casing facing the bottom end of the guide pipe, and a filter screen can generally be arranged at the outlet position to prevent the clean rice from flowing into the ventilation pipe. When the structure falls through the third channel after being thrown out, it first enters the guide pipe through the third channel, flows downward through the first flow channel, and is blocked by the second partition after flowing to the discharge port. It can only enter the second flow channel through the discharge port to continue falling. During the falling process in the second flow channel, the ventilation pipe blows air to it. Since the weight of rice bran is relatively light, the rice bran will float upward, move upward through the first flow channel under the first flow channel, until it is blocked by the second partition and discharged through the discharge port. The clean rice enters the clean rice port and is discharged. This structure can collect the clean rice in a centralized manner to prevent secondary mixing after the clean rice and rice bran are separated.

[0027] Furthermore, in order to facilitate the falling of rice bran, the third partition is tilted relative to the first partition, the top end is connected to the first partition, the bottom end is connected to the bottom surface of the guide tube, and the distance from the top end of the third partition to the second partition is greater than the distance from the bottom end to the second partition. Further, the feed channel is a third feed port 9, and the third feed port is connected to a pouring pipe 9a, and the guide pipe is connected to the guide pipe, so that rice enters the guide pipe through the third channel. In order to facilitate the collection of clean rice and rice bran, a support seat 21 is fixedly provided at the bottom end of the casing, so that there is a distance between the clean rice outlet and the rice bran outlet and the ground. Generally, the support seats can be 3 or 4 or more.

[0028] As a preferred implementation, see Figure 4 and Figure 5, an air inlet pipe 22 is horizontally arranged on the casing, the air inlet pipe is located above the first blocking portion, one end of the air inlet pipe is located outside the casing for connecting the air supply device, and the other end is located inside the casing; the air inlet pipe is bent below the first feed port, so that the air inlet pipe forms a vertical portion 23 at the first feed port, and a cover body 24 is rotatably connected to the vertical portion, the top of the cover body is circular, and the bottom is a truncated cone with a top diameter smaller than the bottom diameter; the vertical portion is connected to a thickened tube 25 below the cover body, the bottom end of the thickened tube is closed, and a plurality of air outlet holes 26 are evenly arranged on the thickened tube at a position below the cover body, a fourth partition plate 27 is arranged in the thickened tube at a position located in the cover body, a connecting hole 28 is arranged in the middle position of the fourth partition plate, the diameter of the connecting hole is smaller than the diameter of the air inlet pipe, a driving hole 29 is arranged at the top of the thickened tube, and a fan blade 30 is arranged at a position corresponding to the driving hole on the cover body. When in use, the structure can connect the air inlet pipe to an air supply device such as a blower, so that after the wind passes through the air inlet pipe and reaches the thickened pipe, since the diameter of the connection hole on the fourth partition is smaller than the diameter of the air inlet pipe, part of the wind is blocked by the fourth partition in the thickened pipe and discharged through the drive hole to drive the fan blades to rotate and then drive the cover body to rotate, and the other part of the wind is discharged through the air outlet hole; the rice that falls through the first feed port first falls on the cover body and is thrown out under the action of the cover body rotation, which increases the falling area and uniformity of the rice. In the process of the rice falling downward after being thrown out, the wind discharged from the air outlet has a drying effect on it, especially when it is connected to a hot air device such as a hot air blower through a branch pipe, the rice can be quickly dried, which is more convenient for rice chaff removal. In the above structure, the fan blades and drive holes are preferably multiple, and are arranged circumferentially based on the vertical portion. The fan blades can also be replaced by wind wheels, which is well known to those skilled in the art and will not be repeated here. The bottom end of the cover body is generally lower than the top end of the first blocking portion. In order to prevent the rice from being thrown out and detaching from the truncated cone-shaped protective cover, a baffle 31 is connected above the first blocking part, and the baffle is arranged around the first blocking part to form a cylindrical structure.

[0029] In the above structure, the turntable can be driven by a motor, or an existing electric turntable can be directly used, which is well known to those skilled in the art and will not be described in detail here.

[0030] The above-mentioned embodiments only express the implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A rice bran removal device, comprising a housing (1), a first feed inlet (2) being installed at the top of the housing, characterized in that: A first support plate (3) is arranged inside the housing, a turntable (4) is mounted on the first support plate, the turntable extends outwardly in an inclined manner to form a truncated cone-shaped protective cover (5), the top of the truncated cone-shaped protective cover is bent inwardly to form a first blocking portion (6), and an end of the first blocking portion that is not connected to the truncated cone-shaped protective cover forms a second feed port (7) on the inner side, and the second feed port is arranged corresponding to the first feed port; The truncated cone-shaped protective cover is provided with a plurality of first through holes (8) for rice to pass through; A feeding channel is provided at a position of the first support plate corresponding to the truncated cone-shaped protective cover; The bottom surface of the housing is provided with a rice bran outlet (10), a clean rice outlet (11) and a ventilation pipe (12). One end of the ventilation pipe is located outside the casing and is used to connect to the fan, and the other end is located inside the casing and is used to guide the wind generated by the operation of the fan to the rice falling through the third channel; The rice cleaning port is located in the middle of the bottom surface of the casing, and the rice bran outlet is close to the edge of the bottom surface of the casing; A material guide pipe (13) is arranged below the first support plate, the material guide pipe is arranged obliquely, the bottom end of the material guide pipe is arranged corresponding to the clean rice outlet, and the top end of the material guide pipe is fixed on the side wall of the casing; The feed channel is connected to the interior of the material guide pipe, and the connection position is close to the top end of the material guide pipe; A first partition (14) is arranged in the material guide pipe, the first partition divides the material guide pipe into a first flow channel (15) and a second flow channel (16), the first flow channel is located above the second flow channel, a second partition (17) and a third partition (19) are arranged on the first partition, the second partition is located in the first flow channel, and a discharge port (18) is arranged at a position on the material guide pipe corresponding to the first flow channel, the discharge port is located on a side of the partition facing away from the feed channel; The third partition is located in the second flow channel, on the side of the second partition facing the feed channel, and a pouring port (20) is provided on the first partition at a position between the second partition and the third partition; One end of the ventilation pipe located in the housing is arranged opposite to the bottom end of the material guiding pipe.

2. A rice bran removal device according to claim 1, characterized in that: The third partition is inclined relative to the first partition, with the top end connected to the first partition and the bottom end connected to the bottom surface of the guide tube. The distance from the top end of the third partition to the second partition is greater than the distance from the bottom end to the second partition.

3. A rice bran removal device according to claim 1 or 2, characterized in that: The feed channel is a third feed port (9), the third feed port is connected to a material pouring pipe (9a), and the material guide pipe is connected to the material guide pipe; A support seat (21) is fixedly arranged at the bottom end of the casing.

4. A rice bran removal device according to any one of claims 1-2, characterized in that: An air inlet pipe (22) is horizontally arranged on the casing, the air inlet pipe is located above the first blocking portion, one end of the air inlet pipe is located outside the casing and is used to connect to an air supply device, and the other end is located inside the casing; The air inlet pipe is bent below the first feed inlet, so that the air inlet pipe forms a vertical portion (23) at the first feed inlet, and a cover body (24) is rotatably connected to the vertical portion, the top of the cover body is circular, and the bottom is a truncated cone with a top diameter smaller than a bottom diameter; The vertical portion is connected to a thickened tube (25) below the cover body, the bottom end of the thickened tube is closed, a plurality of air outlet holes (26) are evenly arranged on the thickened tube at a position below the cover body, a fourth partition (27) is arranged inside the thickened tube at a position inside the cover body, a connecting hole (28) is arranged at a middle position of the fourth partition, the diameter of the connecting hole is smaller than the diameter of the air inlet pipe, a driving hole (29) is arranged at the top end of the thickened tube, and a fan blade (30) is arranged at a position on the cover body corresponding to the driving hole.

5. The rice bran removal device according to claim 4, characterized in that: The fan blades and the driving holes are both multiple and are arranged circumferentially with the vertical portion as a reference.

6. The rice bran removal device according to claim 4, characterized in that: The bottom end of the cover body is lower than the top end of the first blocking portion.

7. The rice bran removal device according to claim 5, characterized in that: A baffle (31) is connected above the first blocking portion, and the baffle is arranged around the first blocking portion to form a cylindrical structure.

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