CN114405826B - Rice bran collecting and screening device and application method thereof - Google Patents
Rice bran collecting and screening device and application method thereof Download PDFInfo
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- CN114405826B CN114405826B CN202210061042.0A CN202210061042A CN114405826B CN 114405826 B CN114405826 B CN 114405826B CN 202210061042 A CN202210061042 A CN 202210061042A CN 114405826 B CN114405826 B CN 114405826B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
Abstract
The invention relates to the technical field of agriculture, in particular to a rice bran collecting and screening device, wherein the tail end of a rotary drum is closed, the front end of the rotary drum is open, the main body of the annular surface of the rotary drum is a filter screen, a sealing cover is connected with the outer annular surface of the rotary drum through a rotary sealing piece, the power end of a motor is connected with the center of the tail end of the rotary drum, the motor can drive the rotary drum to rotate, the open front end of the rotary drum is communicated with the first end of a negative pressure air pipe through a sealing bearing, the second end of the negative pressure air pipe is communicated with a collecting box, the first end of a connecting pipe is positioned below the rotary drum, the opening of the first end of the connecting pipe is upward and opposite to the position of the filter screen, a vertically arranged pipeline of the connecting pipe, the second end of the connecting pipe is communicated with the collecting box, and a fan is arranged at the position of the negative pressure air pipe and/or the connecting pipe. The device can thoroughly separate rice bran from rice, brown rice and rice bran mixed grains, and can separate glumes. The invention also provides a using method of the rice bran collecting and screening device.
Description
Technical Field
The invention relates to the technical field of agriculture, in particular to a rice bran collecting and screening device and a using method thereof.
Background
Rice bran is mainly processed from pericarp, seed coat, endosperm, aleurone layer and embryo, so that a small amount of rice husk and a certain amount of dust and microorganisms can be mixed in the processing process, and therefore, the rice bran can only be used for feed and is a main byproduct of rice processing.
In the prior art, the rice is called brown rice after the rice is glume removed, the rice is obtained by grinding the brown rice and the rice bran layer is removed, and rice bran is mixed with rice grains or brown rice which is not broken in the rice husk and the rice husk, so that a large amount of rice is remained in the rice bran which is left in the brown rice grinding process, for example, rice bran is directly used as feed, so that great waste is caused, and therefore, how to separate rice bran from the rice mixed by rice, brown rice and rice bran is difficult.
Disclosure of Invention
In order to solve the problems, the rice bran collecting and screening device provided by the invention can thoroughly separate rice bran from grains mixed by rice, brown rice and rice bran, and can separate glumes. The invention also provides a using method of the rice bran collecting and screening device.
In order to achieve the above purpose, the invention adopts the following technical scheme:
in a first technical scheme, the rice bran collecting and screening device is used for collecting and screening rice bran, chaff and brown rice and rice in grains and comprises a sealing cover, a rotating drum, a motor, a collecting box, a negative pressure air pipe, a connecting pipe, a fan and a positive pressure air pipe, wherein the tail end of the rotating drum is closed, the front end of the rotating drum is open, a main body of an annular surface of the rotating drum is a filter screen, the sealing cover is sealed and enclosed outside the filter screen, the sealing cover is connected with the outer annular surface of the rotating drum through a rotary sealing piece, the power end of the motor is connected with the center of the tail end of the rotating drum, the motor can drive the rotating drum to rotate, the open front end of the rotary front end is communicated with the first end of the negative pressure air pipe through a sealing bearing, the second end of the negative pressure air pipe is communicated with the collecting box, the first end of the connecting pipe is positioned below the rotating drum, the opening of the first end of the connecting pipe is upward and is opposite to the position of the filter screen, the vertically arranged pipeline of the connecting pipe is communicated with the collecting box, and the fan is arranged at the position of the negative pressure air pipe or the connecting pipe;
the fan can convey pressure gas into the sealing cover through the positive pressure air pipe, and the pressure gas carries rice bran and caryophyllus to return to the recovery box after passing through the filter screen of the rotary drum and the negative pressure air pipe so as to separate the rice bran and the caryophyllus and brown rice and rice.
In the first technical solution, preferably, the front end of the drum has a conical flow guide tube horizontally arranged in a funnel shape, the open end of the conical flow guide tube is in butt joint with the front end of the drum body, and the gathering end of the conical flow guide tube is connected with the rotating end of the sealing bearing.
In a first aspect, preferably, the rotary drum further includes a grain input pipe, the grain input pipe passes through the negative pressure air pipe and enters the negative pressure air pipe, and the grain input pipe extends and passes through the conical flow guide pipe, and an output end of the grain input pipe is located at a main body of the rotary drum.
In the first technical scheme, preferably, the outer ring surface of the rotary drum comprises a front sealing section, a filter screen and a rear sealing section which are sequentially arranged from the front end to the tail end, and a framework for supporting the filter screen is arranged outside the filter screen; the rotary seals are mounted at the front and rear closure segments, respectively.
In the first technical scheme, as preferable, the tail end face of the rotary drum is arranged outside the sealing cover, and a tail door is arranged at the position, close to the outer ring surface, of the tail end face of the rotary drum; the top of connecting pipe has funnel structure, and the top of this funnel structure is towards the filter screen.
In the first aspect, preferably, the motor is a bidirectional stepping servo motor.
In the first technical scheme, as an preference, the seal cover is further internally provided with an anti-blocking assembly, the anti-blocking assembly comprises a brush shaft positioned outside the rotary drum and brush wires positioned on the brush shaft, the brush shaft is rotatably installed in the seal cover through a bearing, the brush shaft is arranged in parallel with the rotary drum, the brush wires are in contact with the filter screen, and the brush shaft is in power connection with the output end of the motor through a transmission structure.
In a first aspect, preferably, the interior of the drum has a plurality of guide strips for guiding grain away from the inner wall of the drum during rotation of the drum; the height of the guide strip gradually decreases from the tail end of the rotary drum to the front end of the rotary drum, and the guide strip can guide grains from the tail end in the rotary drum to the front end of the rotary drum; the top surface of the guide strip is a concave lifting surface in the rotation direction of the rotary drum; the radial free end of the guide strip is higher than the inner edge of the gathering end of the rotary drum.
In a second aspect, a method of using a rice bran collection and screening device as described in the first aspect, comprises the steps of:
step 1, inputting mixed grains: introducing grain into the drum through a grain inlet pipe;
step 2, primary screening: closing a fan, opening a motor, controlling the motor to drive the rotary drum to rotate positively at a first speed, wherein the rotating period of the rotary drum when the rotary drum rotates at the first speed is 2-3 weeks, grains slowly move along the inner wall of the rotary drum in the rotary drum when the rotary drum rotates at the first speed, and rice bran of small grains in the grains falls into a collecting tank after passing through a connecting pipe from a filtering part of a filter screen;
step 3, screening again: the fan is started, the motor is controlled to drive the rotary drum to rotate positively at a second speed, the second speed is higher than the first speed, the rotary drum rotates at the second speed for 3-5 minutes, the fan forms negative pressure at the front end of the rotary drum through the negative pressure air pipe, meanwhile, positive pressure is formed in the sealing cover through the connecting pipe, grains form a throwing shape in the rotary drum after being lifted through the inner wall of the rotary drum and the guide strip, rice bran and glume are driven by pressure gas to fall into the collecting box through the negative pressure air pipe, brown rice and rice with high density fall back into the rotary drum, and in the process, the guide strip guides the residual grains in the rotary drum to the front end of the rotary drum so that the pressure gas can separate rice bran and glume, brown rice and rice, and rice collecting and screening are finally completed;
step 4, removing rice and taking the rice: after the step 3 is completed, the motor is used for controlling the rotary drum to reversely rotate, the brown rice and the rice are enriched to the tail end of the rotary drum under the guiding action of the guide strip, the tail gate at the tail end of the rotary drum is controlled to be positioned at the lowest position, and the tail gate is opened to take out the brown rice and the rice.
In the second technical scheme, in the step 3, the rotating drum pauses in the middle of the second-speed rotation, and the rotating drum is controlled by a motor to reversely rotate for 1-2 weeks, so that grains enriched at the front end of the rotating drum are re-uniformly distributed in the axial direction of the rotating drum; and after the re-uniform distribution is finished, controlling the rotating drum to rotate forward again.
The beneficial effects of using the invention are as follows:
1. this device accessible motor drive rotary drum rotates, preliminary screening is carried out cereal before the fan starts, rice bran that the volume is less in cereal sieves out, rice bran that the volume is less directly falls into the collecting box from filter screen department filtering the department, the follow-up fan that opens, because rice bran and caryophyllus's density is less, brown rice and rice's density is great, therefore when the rotary drum rotates, negative pressure tuber pipe is inhaled to the pressure gas that rice bran and caryophyllus provided by the fan, brown rice and rice fall back to the rotary drum in, accomplish the separation of rice bran and caryophyllus.
2. The middle part of this device rotary drum is the filter screen, and the front segment of rotary drum is close to the position of negative pressure tuber pipe and is the front portion closed section, and the first effect of front portion closed section is as the butt joint department of rotating sealing connection with the sealed cowling, and the second effect is that the front portion closed section can not be as the passageway of pressure gas entering rotary drum, therefore, pressure gas can not directly inhale brown rice and rice in the negative pressure tuber pipe, and in addition, pressure gas forms the wind-force of axial flow in rotary drum front portion closed section department, and the effect that the negative pressure tuber pipe inhaled rice bran and glume is better.
3. The conical honeycomb duct that this device set up can rebound in the rotary drum after brown rice and rice contact conical honeycomb duct, can further avoid brown rice and rice to inhale negative pressure tuber pipe.
4. The device sets up the gib block in the rotary drum, and the first effect of gib block is with cereal formation throwing form in the rotary drum after promoting cereal to certain height, and rice bran and glume are inhaled the negative pressure tuber pipe more easily. The second function of the guide strip is to guide the tail end of the grain and the rotary drum to the front end of the rotary drum, so that rice bran and glume in the grain are scattered at a position close to the negative pressure air pipe, and the screening efficiency is further improved. In addition, the guide strip is optimized, the radial free end position of the guide strip is higher than the inner edge of the gathering end of the rotary drum, and the grain scattering position is the suction inlet of the negative pressure air pipe as soon as possible; the top surface of the guide strip is a concave lifting surface, so that more grains can be supported, and the grains are prevented from being separated from the guide strip too early.
5. The brush silk in the anti-blocking assembly can brush the rotary drum filter screen all the time, so that grains are prevented from being embedded into the filter screen, and the filtering capacity and ventilation capacity of the filter screen are reduced.
6. The invention also provides a using method of the rice bran collecting and screening device, the method is correspondingly optimized aiming at the structural characteristics of the rice bran collecting and screening device, and the efficiency of the rice bran collecting and screening device on grain screening is further optimized by controlling different rotation modes of the motor.
Drawings
FIG. 1 is a schematic view showing the structure of a rice bran collecting and screening apparatus according to the present invention.
FIG. 2 is a perspective view of the rice bran collecting and screening device of the present invention with the sealing cover removed.
FIG. 3 is a schematic view of an anti-clogging module in a rice bran collecting and screening device according to the present invention.
FIG. 4 is a schematic view of the rear end of the drum of the rice bran collecting and screening apparatus of the present invention.
FIG. 5 is a schematic view showing the development of the inner wall of the transfer drum in the rice bran collecting and screening apparatus according to the present invention.
Fig. 6 is a cross-sectional view of the guide bar of fig. 5 taken along the direction A-A.
The reference numerals include:
10-sealing cover, 20-rotary drum, 21-motor, 22-conical flow guide pipe, 23-sealing bearing, 24-filter screen, 25-front sealing section, 26-skeleton, 27-guiding strip, 271-lifting surface, 28-rear sealing section, 29-tail gate, 30-grain input pipe, 40-collecting box, 41-negative pressure air pipe, 42-connecting pipe, 43-funnel structure, 50-fan, 60-anti-blocking component, 61-brush shaft, 62-brush wire, 63-transmission structure; b-gathering end schematic line.
Detailed Description
In order to make the objects, technical solutions and advantages of the present technical solution more apparent, the present technical solution is further described in detail below in conjunction with the specific embodiments. It should be understood that the description is only illustrative and is not intended to limit the scope of the present technical solution.
Example 1
As shown in fig. 1-6, this embodiment proposes a rice bran collecting and screening device for collecting and screening rice bran and chaff in grains, brown rice and rice, which comprises a sealing cover 10, a rotary drum 20, a motor 21, a collecting box 40, a negative pressure air pipe 41, a connecting pipe 42, a fan 50 and a positive pressure air pipe, wherein the tail end of the rotary drum 20 is closed, the front end of the rotary drum 20 is open, the main body of the annular surface of the rotary drum 20 is a filter screen 24, the sealing cover 10 is sealed and enclosed outside the filter screen 24, the sealing cover 10 is connected with the outer annular surface of the rotary drum 20 through a rotary seal piece, the power end of the motor 21 is connected with the center of the tail end of the rotary drum 20, the motor 21 can drive the rotary drum 20 to rotate, the open front end of the rotary drum is communicated with the first end of the negative pressure air pipe 41 through a sealing bearing 23, the second end of the negative pressure air pipe 41 is communicated with the collecting box 40, the first end of the connecting pipe 42 is positioned below the rotary drum 20, the first end of the connecting pipe 42 is opened and is opposite to the position of the filter screen 24, the vertically arranged pipeline of the connecting pipe 42 is communicated with the collecting box 40, and the fan 50 is arranged at the negative pressure air pipe 41 and/connecting pipe 42; the blower 50 may deliver pressurized air into the sealed enclosure 10 through the positive pressure air duct, which carries the rice bran and chaff back to the recovery header 40 through the filter screen 24 of the drum 20 and the negative pressure air duct 41 to separate the rice bran and chaff, and the brown rice and rice.
This device accessible motor 21 drive rotary drum 20 rotates, preliminary screening is carried out to cereal before fan 50 starts, the rice bran that the volume is less in the cereal is sieved out, the rice bran that the volume is less is strained the department and is directly fallen into collecting box 40 from filter screen 24, the follow-up fan 50 that opens, because the density of rice bran and glume is less, the density of brown rice and rice is great, therefore when rotary drum 20 rotates, the negative pressure tuber pipe 41 is inhaled to the pressure gas that rice bran and glume provided by fan 50, brown rice and rice fall back to rotary drum 20, accomplish the separation of rice bran and glume.
As shown in fig. 2, the front end of the drum 20 is provided with a cross funnel-shaped conical flow guide tube 22, the open end of the conical flow guide tube 22 is in butt joint with the front end of the drum 20 main body, and the gathering end of the conical flow guide tube 22 is connected with the rotating end of a sealing bearing 23. The conical flow guide pipe 22 arranged by the device, after the brown rice and the rice contact the conical flow guide pipe 22, the brown rice and the rice rebound into the rotary drum 20 after contacting the lower half part of the conical flow guide pipe 22 due to the action of the annular conical surface, so that the brown rice and the rice can be further prevented from being sucked into the negative pressure air pipe 41.
The drum 20 further includes a grain input pipe 30, the grain input pipe 30 passing through the negative pressure air pipe 41 into the interior of the negative pressure air pipe 41, and the grain input pipe 30 extending through the conical draft tube 22, the output end of the grain input pipe 30 being located at the body of the drum 20. Because the grain input pipe 30 and the negative pressure air pipe 41 are hard pipelines, the grain input pipe 30 passes through the negative pressure air pipe 41 to seal, and the grain input pipe 30 can directly input quantitative grains to the rotary drum 20.
As shown in fig. 2 and 4, the outer ring surface of the rotary drum 20 comprises a front closing section 25, a filter screen 24 and a rear closing section 28 which are sequentially arranged from the front end to the tail end, and a framework 26 for supporting the filter screen 24 is arranged outside the filter screen 24; the rotary seals are mounted at the front and rear closing sections 25 and 28, respectively. The tail end surface of the rotary drum 20 is arranged outside the sealed cover 10, a tail gate 29 is arranged at the position, close to the outer ring surface, of the tail end surface of the rotary drum 20, and the tail gate 29 is opened to take out the filtered brown rice and the filtered rice from the rotary drum 20; the top of the connecting tube 42 has a funnel structure 43, the top of the funnel structure 43 faces the filter screen 24, the funnel structure 43 is convenient for receiving small particles of rice bran filtered out by the filter screen 24, the length and width of the funnel structure 43 are larger than those of the filter screen 24, and the top opening of the funnel structure 43 is preferably an outer ring surface adjacent to the filter screen.
Preferably, the motor 21 is a bi-directional stepper motor, and the advantage of using a bi-directional stepper motor for the motor 21 is described in detail below with reference to embodiment 2.
The seal housing 10 also has an anti-blocking assembly 60 inside, the anti-blocking assembly 60 comprising a brush shaft 61 located outside the drum 20 and brush filaments 62 located on the brush shaft 61, the brush shaft 61 being rotatably mounted in the seal housing 10 by means of bearings, the brush shaft 61 being arranged parallel to the drum 20, the brush filaments 62 being in contact with the filter screen 24, the brush shaft 61 being in dynamic connection with the output of the motor 21 by means of a transmission 63. The transmission structure 63 can be a chain gear transmission, a belt transmission or a gear direct connection transmission structure.
As shown in fig. 5, the interior of the drum 20 has a number of guide bars 27 for guiding grain away from the inner wall of the drum 20 during rotation of the drum 20; the height of the guide strip 27 gradually decreases from the tail end of the drum 20 to the front end of the drum 20, and the guide strip 27 can guide grains from the tail end in the drum 20 to the front end of rotation; in the direction of rotation of the drum 20, the top surface of the guide bar 27 is a recessed lifting surface 271; as shown in fig. 6, the radial free end of the guide strip 27 is located higher than the inner edge of the gathering end of the drum 20, indicated by the gathering end schematic line B.
The device sets up the gib block 27 in rotary drum 20, and the first effect of gib block 27 is with cereal formation throwing the form in rotary drum 20 after promoting cereal to certain height, and rice bran and glume are more easily inhaled negative pressure tuber pipe 41. The second function of the guide strip 27 is to guide the grain, and hence the tail end of the drum 20, toward the front end of the drum 20 so that the rice bran and chaff in the grain are thrown away near the negative pressure air duct 41, further improving screening efficiency. In addition, the guide strip 27 is optimized, the radial free end position of the guide strip 27 is higher than the inner edge of the gathering end of the rotary drum 20, and the grain scattering position is the suction inlet of the negative pressure air pipe 41 as soon as possible; the top surface of the guide strip 27 is a concave lifting surface 271, which can support more grains and prevent the grains from being separated from the guide strip 27 prematurely.
In addition, the middle part of the collecting box 40 is provided with a reticular partition, the interior of the collecting box 40 can be divided into two cabins, wherein the negative pressure air pipe 41 and the connecting pipe 42 are respectively connected with one cabin, the filtered small-particle rice bran falls into the cabin which is in butt joint with the connecting pipe 42, and the small-particle rice bran can be directly used for oil extraction and physical objects. The rice bran and chaff mixture collected in the vacuum air duct 41 connecting chamber can be used directly as a feed additive for animal husbandry.
Example 2
In this example, the rice bran collecting and screening device according to example 1 is used as a technology, and the method of using the rice bran collecting and screening device according to example 1 and the effects corresponding thereto will be described in detail.
A method of using a rice bran collection screening device as in the first aspect, comprising the steps of:
step 1, inputting mixed grains: introducing grain into the drum 20 through a grain inlet pipe 30;
step 2, primary screening: the fan 50 is turned off, the motor 21 is turned on, the motor 21 is controlled to drive the rotary drum 20 to rotate positively at a first speed, the rotation period of the rotary drum 20 at the first speed is 2-3 weeks, grains slowly move along the inner wall of the rotary drum 20 in the rotary drum 20 at the first speed, and rice bran of small grains in the grains is filtered by the filter screen 24 and falls into the collecting tank 40 after passing through the connecting pipe 42;
step 3, screening again: the fan 50 is opened, the motor 21 is controlled to drive the rotary drum 20 to rotate positively at a second speed, the second speed is higher than the first speed, the rotary drum 20 rotates at the second speed for 3-5 minutes, negative pressure is formed at the front end of the rotary drum 20 through the negative pressure air pipe 41 by the fan 50, meanwhile positive pressure is formed in the sealed cover 10 through the connecting pipe 42, grains form a throwing shape in the rotary drum 20 after being lifted by the inner wall of the rotary drum 20 and the guide strip 27, rice bran and glume are driven by pressure gas to fall into the collecting box 40 through the negative pressure air pipe 41, the brown rice and rice with high density fall back into the rotary drum 20, and in the process, the guide strip 27 guides the residual grains in the rotary drum 20 to the front end of the rotary drum 20 so that the pressure gas can separate the rice bran and glume and the brown rice and the glume well, and the brown rice and rice collecting and rice screening are finally completed;
step 4, removing rice and taking the rice: after the step 3 is completed, the motor 21 controls the rotary drum 20 to reversely rotate, the brown rice and the rice are enriched to the tail end of the rotary drum 20 under the guiding action of the guide bar 27, the tail gate 29 at the tail end of the rotary drum 20 is controlled to be positioned at the lowest position, and the tail gate 29 is opened to take out the brown rice and the rice.
Preferably, in step 3, the rotation of the drum 20 is suspended in the middle of the second speed rotation, and the drum 20 is controlled to reversely rotate for 1-2 weeks by the motor 21, so that grains enriched at the front end of the drum 20 are re-uniformly distributed in the axial direction of the drum 20; after the re-distribution is completed, the drum 20 is controlled to rotate forward again.
The foregoing is merely exemplary of the present invention, and those skilled in the art can make many variations in the specific embodiments and application scope according to the spirit of the present invention, as long as the variations do not depart from the spirit of the invention.
Claims (6)
1. The application method of the rice bran collecting and screening device is characterized in that the rice bran collecting and screening device is used for collecting and screening rice bran, chaff and brown rice and rice in grains and comprises a sealing cover, a rotary drum, a motor, a collecting box, a negative pressure air pipe, a connecting pipe, a fan and a positive pressure air pipe, wherein the tail end of the rotary drum is sealed, the front end of the rotary drum is open, a main body of an annular surface of the rotary drum is a filter screen, the sealing cover is sealed and enclosed outside the filter screen, the sealing cover is connected with the outer annular surface of the rotary drum through a rotary sealing piece, the power end of the motor is connected with the center of the tail end of the rotary drum, the motor can drive the rotary drum to rotate, the front end opening of the rotary drum is communicated with the first end of the negative pressure air pipe through a sealing bearing, the second end of the negative pressure air pipe is communicated with the collecting box, the first end of the connecting pipe is arranged below the rotary drum, the first end opening of the connecting pipe is upward and is opposite to the position of the connecting pipe, the connecting pipe is a vertically arranged pipeline, the second end of the connecting pipe is communicated with the collecting box, and the fan is arranged at the position of the negative pressure air pipe or the connecting pipe;
the fan can convey pressure gas into the sealing cover through the positive pressure air pipe, and the pressure gas carries rice bran and caryophylli to return to the recovery box after passing through the filter screen of the rotary drum and the negative pressure air pipe so as to separate the rice bran and the caryophylli and brown rice and rice;
the motor is a bidirectional stepping servo motor;
the interior of the drum has a plurality of guide bars for separating grains from the inner wall of the drum during rotation of the drum; the height of the guide strip gradually decreases from the tail end of the rotary drum to the front end of the rotary drum, and the guide strip can guide grains from the tail end of the rotary drum to the front end of the rotary drum; the top surface of the guide strip is a concave lifting surface in the rotation direction of the rotary drum; the radial free end position of the guide strip is higher than the inner edge of the gathering end of the rotary drum;
the using method of the rice bran collecting and screening device comprises the following steps:
step 1, inputting mixed grains: introducing grain into the drum through a grain inlet pipe;
step 2, primary screening: closing a fan, opening a motor, controlling the motor to drive the rotary drum to rotate positively at a first speed, wherein the rotating period of the rotary drum when the rotary drum rotates at the first speed is 2-3 weeks, grains slowly move along the inner wall of the rotary drum in the rotary drum when the rotary drum rotates at the first speed, and rice bran of small grains in the grains falls into a collecting tank after passing through a connecting pipe from a filtering part of a filter screen;
step 3, screening again: the fan is started, the motor is controlled to drive the rotary drum to rotate positively at a second speed, the second speed is higher than the first speed, the rotary drum rotates at the second speed for 3-5 minutes, the fan forms negative pressure at the front end of the rotary drum through the negative pressure air pipe, meanwhile, positive pressure is formed in the sealing cover through the connecting pipe, grains form a throwing shape in the rotary drum after being lifted through the inner wall of the rotary drum and the guide strip, rice bran and glume are driven by pressure gas to fall into the collecting box through the negative pressure air pipe, brown rice and rice with high density fall back into the rotary drum, and in the process, the guide strip guides the residual grains in the rotary drum to the front end of the rotary drum so that the pressure gas can separate rice bran and glume, brown rice and rice, and rice collecting and screening are finally completed;
step 4, removing rice and taking the rice: after the step 3 is completed, controlling the rotary drum to reversely rotate through a motor, enriching the brown rice and the rice to the tail end of the rotary drum through the guiding action of the guiding strip, controlling the tail gate of the tail end of the rotary drum to be positioned at the lowest position, and opening the tail gate to take out the brown rice and the rice;
in the step 3, the rotating drum pauses in the middle of the second-speed rotation, and the rotating drum is controlled by a motor to reversely rotate for 1-2 weeks, so that grains enriched at the front end of the rotating drum are re-uniformly distributed in the axial direction of the rotating drum; and after the re-uniform distribution is finished, controlling the rotating drum to rotate forward again.
2. The method of using a rice bran collection screening apparatus according to claim 1, wherein: the front end of the rotary drum is provided with a transverse funnel-shaped conical flow guide pipe, the open end of the conical flow guide pipe is in butt joint with the front end of the rotary drum main body, and the gathering end of the conical flow guide pipe is connected with the rotating end of the sealing bearing.
3. The method of using a rice bran collection screening apparatus according to claim 2, wherein: the rotary drum further comprises a grain input pipe, the grain input pipe penetrates through the negative pressure air pipe to enter the negative pressure air pipe, the grain input pipe extends and penetrates through the conical guide pipe, and the output end of the grain input pipe is located at the main body of the rotary drum.
4. The method of using a rice bran collection screening apparatus according to claim 1, wherein: the outer ring surface of the rotary drum comprises a front sealing section, a filter screen and a rear sealing section which are sequentially arranged from the front end to the tail end, and a framework for supporting the filter screen is arranged outside the filter screen; the rotary seals are mounted at the front and rear closure segments, respectively.
5. The method of using a rice bran collection screening apparatus according to claim 1, wherein: the tail end face of the rotary drum is arranged outside the sealing cover, and a tail door is arranged at the position, close to the outer ring face, of the tail end face of the rotary drum; the top of connecting pipe has funnel structure, and the top of this funnel structure is towards the filter screen.
6. The method of using a rice bran collection screening apparatus according to claim 1, wherein: the inside anti-blocking assembly that still has of sealed cowling, this anti-blocking assembly is including being located the outside brush axle of rotary drum and being located the brush silk on the brush axle, the brush axle passes through the rotatable installation of bearing in the sealed cowling, brush axle and rotary drum parallel arrangement, brush silk and filter screen contact, and the brush axle is connected with the output power of motor through transmission structure.
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| CN202210061042.0A CN114405826B (en) | 2022-01-19 | 2022-01-19 | Rice bran collecting and screening device and application method thereof |
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| CN202210061042.0A CN114405826B (en) | 2022-01-19 | 2022-01-19 | Rice bran collecting and screening device and application method thereof |
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| CN207709385U (en) * | 2017-11-15 | 2018-08-10 | 中地种业（集团）有限公司 | A kind of livestock feed exclusion device |
| CN208732962U (en) * | 2018-09-18 | 2019-04-12 | 山东农业大学 | A kind of film-coated controlled release fertilizer fertilizer slug particle surface modification device |
| CN209631620U (en) * | 2019-02-26 | 2019-11-15 | 宁夏丹富粮油食品有限公司 | A kind of cylindrical pre-cleaning screen |
| CN211303724U (en) * | 2019-12-08 | 2020-08-21 | 江西龙艳米业有限公司 | Rice drum precleaner device |
| CN212468747U (en) * | 2020-06-09 | 2021-02-05 | 上海龙阳环保工程有限公司 | Wet garbage screening machine |
| CN212821141U (en) * | 2020-07-27 | 2021-03-30 | 兴国长丰米业有限公司 | Rice processing is with oil bran separation sieve |
| CN213033002U (en) * | 2020-07-06 | 2021-04-23 | 嘉兴市天麒米业有限公司 | Separating screen for rice and brown rice |
| CN213434627U (en) * | 2020-08-14 | 2021-06-15 | 黄梅县永盛米业有限公司 | Rotary rice stone remover capable of removing dust |
| CN213996748U (en) * | 2020-09-14 | 2021-08-20 | 兴化市四季香米业有限公司 | Efficient rice bran splitter |
| CN214439563U (en) * | 2020-11-27 | 2021-10-22 | 平顶山市天宝特种材料有限公司 | Graded roasting device based on fine degree of coke breeze tailings |
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| CN106735122A (en) * | 2017-01-17 | 2017-05-31 | 宁国市志诚机械制造有限公司 | Feed separation equipment |
| CN206981209U (en) * | 2017-07-04 | 2018-02-09 | 普洱市镇沅苦聪印象农特产品开发有限公司 | A kind of new palm piece reels off raw silk from cocoons classifying equipoment |
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| CN208732962U (en) * | 2018-09-18 | 2019-04-12 | 山东农业大学 | A kind of film-coated controlled release fertilizer fertilizer slug particle surface modification device |
| CN209631620U (en) * | 2019-02-26 | 2019-11-15 | 宁夏丹富粮油食品有限公司 | A kind of cylindrical pre-cleaning screen |
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| CN213033002U (en) * | 2020-07-06 | 2021-04-23 | 嘉兴市天麒米业有限公司 | Separating screen for rice and brown rice |
| CN212821141U (en) * | 2020-07-27 | 2021-03-30 | 兴国长丰米业有限公司 | Rice processing is with oil bran separation sieve |
| CN213434627U (en) * | 2020-08-14 | 2021-06-15 | 黄梅县永盛米业有限公司 | Rotary rice stone remover capable of removing dust |
| CN213996748U (en) * | 2020-09-14 | 2021-08-20 | 兴化市四季香米业有限公司 | Efficient rice bran splitter |
| CN214439563U (en) * | 2020-11-27 | 2021-10-22 | 平顶山市天宝特种材料有限公司 | Graded roasting device based on fine degree of coke breeze tailings |
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