Rice bran powder removing equipment for rice processing

Abstract

The invention relates to the technical field of rice screening, in particular to rice bran powder removing equipment for rice processing. A rolling screening device; a wind screening device; an air blowing mechanism; and an auxiliary screening and collecting device. The rolling screening device drives the mesh screen drum to turn over, a rotatable mesh drum mode is adopted, then the effect of throwing out rice bran powder is achieved in a rolling mode, meanwhile, friction exists between rolling rice, the problem that the rice is stuck by the rice bran powder is further solved, the screening mode of throwing out the rice bran powder in a rolling mode is adopted, and the screening efficiency is improved. According to the rice bran powder screening device, the rice bran powder screening efficiency is improved, due to continuous contact friction between rice in the rolling period, the problem that rice bran powder adheres to the rice is solved, then the purpose of fully removing rice bran powder from the rice is achieved, and then the rice in the wind power screening device is subjected to secondary wind power screening through the air blowing mechanism; therefore, the problem that a small amount of bran powder is continuously adhered to the rice is avoided, and the effect of fully removing the bran powder is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of rice screening, in particular to rice bran removal equipment. Background Art

[0002] Rice is made by rolling paddy, and rice bran is mixed in the rice. In order not to affect people's consumption and make the rice quality better, it is necessary to separate and screen the rice bran, broken grains and full rice. In the current technology, the rice containing rice bran and broken grains is directly poured into the sieve and manually screened, which is not efficient and not suitable for large-scale rice processing and production, affecting the need for rapid production; however, there is also a rice bran screening device, which generally uses an exhaust fan to generate wind force to blow up light impurities such as rice bran to separate them from the rice, but the screening sieve itself cannot move, and the rice piled on the sieve often causes the sieve mesh to be blocked, and the wind force is difficult to blow the rice bran and the light broken grains pressed by the rice, resulting in poor rice screening effect, and the blown rice bran cannot be well collected, and it is troublesome to clean after screening, and part of the rice bran may adhere to the surface of the rice during rolling, and the rice bran adhering to the rice cannot be screened out by manual screening and wind selection alone.

[0003] A rice processing and screening device disclosed in Chinese patent publication number CN111195603B comprises a screening cylinder, a first sealing cover is sealedly connected to the left end of the screening cylinder, a second sealing cover is arranged at the right end of the screening cylinder, a stirring device is arranged inside the screening cylinder, support frames are arranged outside the left and right ends of the screening cylinder, support legs are fixedly connected to the front and rear sides of the lower end of the support frame, reinforcing ribs are fixedly connected between the left and right supporting legs, a discharge port is opened inside the lower end of the second sealing cover, a discharge pipe sealedly connected to the second sealing cover is arranged outside the discharge port, a mounting platform is fixedly connected to the right side of the upper end of the front and rear reinforcing ribs, a blower located at the lower side of the screening cylinder is fixedly connected to the upper end of the mounting platform, one end of an air outlet pipe is sealedly connected to the outer side of the air outlet end of the blower, the other end of the air outlet pipe is sealedly connected to the inner side of the middle end of the discharge pipe, one end of a dust collecting pipe is sealedly connected to the inner side of the right end of the discharge pipe, and a dust filtering device is sealedly connected to the other end of the dust collecting pipe.

[0004] Although the above patent can remove rice bran by friction between rice, the method of using a screw to transport and rub the rice is still too inefficient for removing bran powder. Even if the bran powder loses its adsorption effect on the rice due to the friction of the screw, it will still remain in the rice at that place. In the subsequent wind screening, there will be a problem of excessive bran powder base resulting in poor screening effect. If a large amount of bran powder can be screened during the transportation and friction of the rice, the overall rice bran powder screening effect and efficiency will be increased. In view of this, we propose a rice bran powder removal equipment for processing. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a rice processing bran powder removal device, which solves the problems raised in the above background technology. To achieve the above purpose, the present invention is implemented through the following technical scheme: a rice processing bran powder removal device, including a machine room base, a screening machine is fixedly installed inside the machine room base, a rolling screening device is arranged inside the screening machine, the rolling screening device includes a mesh screen cylinder and a connector, both ends of the mesh screen cylinder are rotated inside the screening machine, a retention plate is fixedly connected to the inner wall of the mesh screen cylinder, a scraper is fixedly connected to the surface of the mesh screen cylinder, and a spiral rod is slidably connected inside the connector; a wind screening device, the wind screening device is arranged at the unloading end of the screening machine; an air blowing mechanism, the air blowing mechanism is arranged on the machine room base, and is used to dock with the wind screening device to generate wind to perform bran powder screening; an auxiliary screening and collecting device, the auxiliary screening and collecting device is arranged on the screening machine.

[0006] Preferably, the screening machine has one end away from the wind screening device fixedly connected to a feed hopper, the screening machine is provided with a bran powder discharge port, the end of the connector is fixedly connected to the interior of the screening machine, and the screening machine has a discharge slope at one end close to the feed hopper.

[0007] Preferably, the rolling screening device also includes an active motor, the surface of which is mounted on the screening machine, the output shaft of which is connected to a double-headed gear shaft, the surface of which is meshed with the surface of the screen cylinder, and the surface of the double-headed gear shaft is rotatably connected to the screening machine.

[0008] Preferably, both ends of the mesh screen cylinder are fixedly connected with cams, the spiral rod is located inside the connecting head and fixedly connected with a connecting plate, a spring is fixedly connected between the surface of the connecting plate and the inside of the connecting head, and the end of the spiral rod close to the feed hopper is fixedly connected with a cam.

[0009] Preferably, the surface of the convex disc is slidably connected to the inside of the screening machine, the side of the convex disc away from the spiral rod is fixedly connected to magnetic ring 1, one end of the magnetic ring 1 is magnetically connected to magnetic ring 2, and the end of the magnetic ring 2 is fixedly connected in the screening machine.

[0010] Preferably, the wind screening device includes a feeding base, the surface of the feeding base is fixedly connected to the screening machine, the interior of the feeding base is elastically connected to a pressure plate via a torsion spring, a protective cover cloth is fixedly connected between the surface of the pressure plate and the surface of the feeding base, an air inlet, an air outlet and a rice feeding port are respectively provided on the feeding base, the air outlet is fixedly connected to an isolation mesh plate, and an anti-blocking mesh brush is rotatably connected to the isolation mesh plate.

[0011] Preferably, the auxiliary screening and collecting device includes a collecting base, the surface of the collecting base is fixedly connected to the screening machine, an annular circulation base is fixedly connected to the collecting base, a one-way air outlet pipe is fixedly connected to the annular circulation base, the internal piston of the collecting base is connected to an air pressure plate, and a passive pressure rod is fixedly connected to the surface of the air pressure plate.

[0012] Preferably, the inner wall of the annular circulation base is fixedly connected to the surface of the screening machine, the end of the one-way air outlet pipe passes through the interior of the screening machine, a spring is fixedly connected between the surface of the air pressure plate and the inner wall of the collecting base, and the inner wall of the air pressure plate is slidably connected to the bottom end of the annular circulation base.

[0013] Preferably, a clearance groove is provided on the surface of the scraper at the passive pressure shaft rod, and a convex ring is provided on the clearance groove, and the convex ring is used to squeeze the passive pressure shaft rod.

[0014] Preferably, a pressure block is fixedly connected to one end of the anti-blocking mesh brush close to the air pressure plate, and a pressure rod is fixedly connected to the bottom of the air pressure plate, and the pressure rod is used to squeeze the pressure block.

[0015] It can be seen from the above technical solutions that the rice processing bran removal device provided in the embodiments of this specification has at least the following beneficial effects: 1. The present invention drives the mesh drum to flip through a rolling screening device, adopts a rotatable mesh drum mode, and then utilizes a rolling method to achieve the effect of throwing out and removing bran powder. At the same time, there is friction between the rolling rice, which further reduces the problem of bran powder sticking to the rice. The screening method of rolling to throw out the bran powder not only improves the screening efficiency of the bran powder, but also because there is continuous contact friction between the rice during rolling, the problem of bran powder sticking to the rice is avoided, and the purpose of fully removing the bran powder from the rice is achieved. Then, the air blowing mechanism is used to perform secondary wind screening on the rice in the wind screening device, and then the problem of a small amount of bran powder continuing to stick to the rice is avoided, and the effect of fully removing the bran powder is achieved.

[0016] 2. The present invention provides a spiral rod capable of linear movement. During the rotation of the screen drum, a cam is used to squeeze the convex plate to drive the spiral rod to move. The spiral rod is then moved and reset by elastic force, so that the spiral rod continuously moves back and forth during the rolling of the screen drum. The spiral rod then contacts and rubs the rice while feeding the rice, thereby solving the problem of bran powder adhering to the rice and improving the effect of sieving bran powder from the rice.

[0017] 3. The present invention uses a wind screening device and two groups of symmetrically distributed pressure plates to block the flow of rice. When the rice is unloaded, the pressure plate uses the torsion spring force thereon to achieve elastic blockage, so that the rice is in a small amount and evenly dispersed state during unloading. The blowing mechanism continuously generates wind and discharges it from the air outlet, thereby achieving the effect of airflow to separate the rice and the bran powder again, thereby avoiding the problem of a small amount of bran powder continuing to adhere to the rice, and achieving the effect of fully removing the bran powder. The wind drives the bran powder to flow through the air outlet to the collecting base. The isolation mesh plate at the air outlet isolates some small rice, thereby avoiding broken rice from penetrating into the collecting base specially for collecting bran powder. The anti-blocking mesh brush can rotate and clean the isolation mesh plate to avoid excessive blockage of the isolation mesh plate, which then affects the problem of collecting bran powder at the air outlet.

[0018] 4. The present invention uses an auxiliary screening and collecting device, and utilizes the convex ring at the yield groove on the scraper to intermittently squeeze the passive pressure shaft rod. During the period when the passive pressure shaft rod drives the air pressure plate to move up and down, the air pressure plate generates positive pressure and negative pressure in the collecting base. When the air pressure plate generates positive pressure downward, the squeezed airflow is discharged through the annular circulation base or the bran powder discharge port. The airflow discharged through the annular circulation base is discharged to the top area inside the screening machine through the one-way air outlet pipe. The wind force is discharged from top to bottom in the screening machine, further achieving the effect of wind force discharge of bran powder. When the air pressure plate moves upward to generate negative pressure, the suction pressure can only act on the screening machine through the bran powder discharge port, thereby achieving the effect of quickly absorbing bran powder by negative pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the screening machine in the present invention; Figure 3 This is a schematic diagram of the internal structure of the screen cylinder of the present invention; Figure 4 This is a schematic diagram of the structure of the screen cylinder in the present invention; Figure 5 It is a schematic diagram of the spiral rod structure in the present invention; Figure 6 It is a schematic structural diagram of the screening machine of the present invention; Figure 7 It is a schematic diagram of the structure of the wind screening device in the present invention; Figure 8 This is a schematic diagram of the anti-blocking mesh brush structure of the present invention; Fig. 9 It is a schematic diagram of the structure of the annular circulation base in the present invention; Fig.10 It is a schematic diagram of the structure of the cam in the present invention; Fig.11 It is a schematic diagram of the structure of the connecting plate in the present invention.

[0020] In the figure: 1, machine base; 2, screening machine; 3, rolling screening device; 31, mesh screen cylinder; 32, retention plate; 33, scraper; 331, clearance groove; 332, convex ring; 34, connector; 35, screw rod; 36, active motor; 37, double-headed gear shaft; 38, cam; 39, connecting plate; 310, convex plate; 311, magnetic ring 1; 312, magnetic ring 2; 4, wind screening device; 41, unloading base; 42, Pressure plate; 43. Protective cover cloth; 44. Air inlet; 45. Air outlet; 46. Rice discharge port; 47. Isolation mesh plate; 48. Anti-blocking mesh brush; 481. Pressing block; 5. Blowing mechanism; 6. Auxiliary screening and collecting device; 61. Collecting base; 62. Annular circulation base; 63. One-way air outlet pipe; 64. Air pressure plate; 641. Pressure rod; 65. Passive pressure shaft rod; 7. Feed hopper; 8. Bran powder discharge port; 9. Discharge slope. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1 - Fig.11As shown, a rice processing bran powder removal device comprises a machine room base 1, a screening machine 2 is fixedly installed inside the machine room base 1, a rolling screening device 3 and a wind screening device 4 are arranged inside the screening machine 2, and the wind screening device 4 is arranged at the unloading end of the screening machine 2, and uses wind power to perform secondary bran powder screening on subsequent rice, thereby avoiding the problem of a small amount of bran powder continuing to adhere to the rice, and achieving the effect of fully removing the bran powder; the end of the screening machine 2 away from the wind screening device 4 is fixedly connected with a feeding hopper 7, and a bran powder unloading port 8 is arranged on the screening machine 2, and a unloading slope 9 is arranged at the end of the screening machine 2 close to the feeding hopper 7; the rice that needs to remove the bran powder is unloaded into the screening machine 2 through the feeding hopper 7, and the screening machine 2 is in a fixed state as a whole, and the rice unloaded into the screening machine 2 is affected by the unloading slope 9 and tilted. The material is obliquely guided to the rolling screening device 3, which adopts a rotatable mesh drum mode, and then uses a rolling method to achieve the effect of throwing out and removing the bran powder. At the same time, there is friction between the rolling rice, which further reduces the problem of bran powder sticking to the rice. The screening method of rolling and throwing out the bran powder not only improves the screening efficiency of the bran powder, but also because there is continuous contact friction between the rice during rolling, the problem of bran powder sticking to the rice is avoided, and then the purpose of fully removing the bran powder from the rice is achieved. The blowing mechanism 5 is arranged on the cabin base 1, and is used to connect with the wind screening device 4 to generate wind power for bran powder screening. The blowing mechanism 5 is an existing mechanism, which is used to generate wind power to achieve bran powder screening; the auxiliary screening and collecting device 6 is arranged on the screening machine 2.

[0023] In this embodiment, the rolling screening device 3 includes a mesh screen drum 31 and a connector 34. Both ends of the mesh screen drum 31 rotate inside the screening machine 2, and the end of the connector 34 is fixedly connected to the inside of the screening machine 2. A bran powder screen is provided on the mesh screen drum 31. The mesh screen drum 31 can rotate inside the screening machine 2, and then the bran powder is removed by rolling the rice. Since a plurality of mesh screen holes are provided on the mesh screen drum 31, the bran powder can be thrown out of the drum during rolling, thereby avoiding the problem of residual bran powder. At the same time, there is friction between the rolling rice, which further To reduce the problem of bran powder sticking to rice, a retention plate 32 is fixedly connected to the inner wall of the mesh screen drum 31. The retention plate 32 can better retain the rice during the rotation of the mesh screen drum 31, thereby increasing the overall rotation amplitude of the rice, so that it can more fully roll and screen the bran powder. A scraper 33 is fixedly connected to the surface of the mesh screen drum 31. The interior of the screening machine 2 is designed to be in a state where the central cylinder diameter is large and the cylinder diameters at both ends are small, so that the bran powder thrown out is concentrated from the two ends to the center and discharged from the bran powder discharge port 8 into the auxiliary screening and collecting device 6, and the rotating scraper 33 is fixedly connected to the surface of the mesh screen drum 31. On the one hand, it can achieve the effect of cleaning the inner wall of the screening machine 2, and on the other hand, it can achieve the effect of rotating fan, and use wind power to further promote the feeding effect of bran powder. The inner part of the connecting head 34 is slidably connected with a spiral rod 35. When the mesh screen cylinder 31 rotates, the spiral rod 35 does not rotate. The rice inside the mesh screen cylinder 31 will be affected by the non-rotating spiral rod 35, and the rice will be continuously fed automatically. During the feeding period, it will continue to roll until it is discharged from the wind screening device 4. In order to avoid excessive wear of the spiral rod 35 on the rice, the outer edge of the spiral rod 35 is designed to be soft. The material (such as bristles, edible silica gel or edible rubber, etc.) is used to further improve the efficiency of removing bran powder while ensuring the quality of rice. The rolling screening device 3 also includes an active motor 36. The surface of the active motor 36 is installed on the screening machine 2. The output shaft of the active motor 36 is connected to a double-headed gear shaft 37. The surface of the double-headed gear shaft 37 is meshed with the surface of the mesh screen cylinder 31, and the surface of the double-headed gear shaft 37 is rotatably connected to the screening machine 2. By starting the active motor 36, the output shaft of the active motor 36 meshes with the mesh screen cylinder 31 through the double-headed gear shaft 37 to rotate and screen.

[0024] Furthermore, both ends of the screen cylinder 31 are fixedly connected with cams 38, and the spiral rod 35 is located inside the connecting head 34 and is fixedly connected with a connecting plate 39, and a spring is fixedly connected between the surface of the connecting plate 39 and the inside of the connecting head 34, and one end of the spiral rod 35 close to the feed hopper 7 is fixedly connected with a convex disk 310. The spiral rod 35 in a non-working state is initially positioned in the connecting head 34 by the elastic force of the spring on the connecting plate 39. During the rotation of the screen cylinder 31, multiple cams 38 in a circular array at its end will intermittently squeeze the convex disk 310, and the convex disk 310 will achieve lateral movement after each squeezing, and the convex disk 310 as a whole will drive the spiral rod 35 to move toward one end of the feed hopper 7. When the convex disk 310 loses the squeezing effect, the spiral rod 35 uses the elastic force to move and reset, that is, the screen cylinder 31 can drive the spiral rod 35 to continuously reciprocate during the rolling period, and the spiral rod 35 can contact and rub the rice again during the movement, thereby solving the problem of bran powder adhering to the rice.

[0025] In addition, the surface of the convex disc 310 is slidably connected to the inside of the screening machine 2, and a magnetic ring 1 311 is fixedly connected to the side of the convex disc 310 away from the spiral rod 35, and one end of the magnetic ring 1 311 is magnetically connected to the magnetic ring 2 312, and the end of the magnetic ring 2 312 is fixedly connected to the screening machine 2. A magnetic repulsive force is generated between the magnetic ring 1 311 and the magnetic ring 2 312, which is used to reposition the spiral rod 35 so that it can be reset again by magnetic force after the powered movement.

[0026] In addition, the wind screening device 4 includes a feeding base 41, the surface of the feeding base 41 is fixedly connected to the screening machine 2, the inside of the feeding base 41 is elastically connected to a pressure plate 42 through a torsion spring, and the pressure plates 42 are arranged in two groups and symmetrically distributed in the feeding base 41. The rice after rolling friction flows out of the feeding base 41, and the two groups of symmetrically distributed pressure plates 42 block the rice. When the rice is fed, the pressure plate 42 uses the torsion spring elastic force thereon to achieve elastic flow resistance, so that the rice is in a small amount and evenly dispersed state during the feeding period, and the blowing mechanism 5 continuously generates wind force and discharges it from the air outlet 45, thereby achieving the effect of airflow separating the rice and bran powder again, thereby avoiding the problem of a small amount of bran powder continuing to adhere to the rice, and achieving the effect of fully removing the bran powder. A protective cover cloth 43 is fixedly connected between the surface of 2 and the surface of the unloading base 41. The protective cover cloth 43 is used to close and protect the groove in the unloading base 41 for the pressure plate 42 to rotate. The unloading base 41 is respectively provided with an air inlet 44, an air outlet 45 and a rice unloading port 46. The blowing mechanism 5 is connected to the air inlet 44, and the blowing mechanism 5 continuously generates wind force to be discharged from the air outlet 45, thereby achieving the effect of air flow separating the rice and the bran powder again. An isolation mesh plate 47 is fixedly connected to the air outlet 45. The isolation mesh plate 47 at the air outlet 45 isolates some fine rice, thereby preventing broken rice from penetrating into the collecting base 61 specially collecting bran powder. An anti-blocking mesh brush 48 is rotatably connected to the isolation mesh plate 47, and a pressing block 481 is fixedly connected to the end of the anti-blocking mesh brush 48 close to the air pressure plate 64.

[0027] It is worth noting that the auxiliary screening and collecting device 6 includes a collecting base 61, the surface of the collecting base 61 is fixedly connected to the screening machine 2, the collecting base 61 is fixedly connected to an annular circulation base 62, the annular circulation base 62 is fixedly connected to a one-way air outlet pipe 63, a plurality of one-way air outlet pipes 63 are provided, and are located in the top area of ​​the annular circulation base 62, the internal piston of the collecting base 61 is connected to an air pressure plate 64, the area of ​​the collecting base 61 located below the air pressure plate 64 is set in a sealed state, and the one-way air outlet pipe 63 is located in the air pressure plate 64. The upper area of ​​64 is provided with an exhaust hole, so that when the air pressure plate 64 moves up and down, the area below the collecting base 61 located at the air pressure plate 64 can generate positive and negative pressure, and the area above the air pressure plate 64 is not affected. The surface of the air pressure plate 64 is fixedly connected with a passive pressure shaft rod 65, and the surface of the scraper 33 is provided with a clearance groove 331 at the passive pressure shaft rod 65, and a convex ring 332 is provided on the clearance groove 331, and the convex ring 332 is used to squeeze the passive pressure shaft rod 65. During the rotation of the scraper 33, the clearance groove 331 on the scraper 33 is provided with a convex ring 332. The convex ring 332 is used to squeeze the passive pressure shaft rod 65. The convex ring 332 at the groove 331 will intermittently squeeze the passive pressure shaft rod 65, and the passive pressure shaft rod 65 will move downward after being squeezed. When the squeezing is lost, the air pressure plate 64 can use the upper spring to move and reset. During the period when the passive pressure shaft rod 65 drives the air pressure plate 64 to move up and down, the air pressure plate 64 generates positive pressure and negative pressure in the collecting base 61. When the air pressure plate 64 generates positive pressure downward, the squeezed airflow is discharged through the annular circulation base 62 or the bran powder discharge port 8. The airflow discharged through the annular circulation base 62 is discharged through the one-way The air outlet pipe 63 discharges to the interior of the screening machine 2. Since there are multiple one-way air outlet pipes 63 and they are located in the upper area of ​​the circular inner wall of the annular circulation base 62, the wind is blown downward from the multiple one-way air outlet pipes 63 toward the interior of the screening machine 2. The wind is discharged from top to bottom in the screening machine 2, further achieving the effect of wind discharge of bran powder. When the air pressure plate 64 moves upward to generate negative pressure, the suction pressure can only act on the screening machine 2 through the bran powder discharge port 8, thereby achieving the effect of quickly absorbing bran powder by using negative pressure. The inner wall of the annular circulation base 62 is fixedly connected to the surface of the screening machine 2, and the end of the one-way air outlet pipe 63 passes through the interior of the screening machine 2. A spring is fixedly connected between the surface of the air pressure plate 64 and the inner wall of the collecting base 61. The inner wall of the air pressure plate 64 is slidably connected to the bottom end of the annular circulation base 62. A pressure rod 641 is fixedly connected to the bottom of the air pressure plate 64. The pressure rod 641 is used to squeeze the pressure block 481. The air pressure plate 64 that continuously moves up and down can continuously squeeze the pressure block 481 through the pressure rod 641, thereby achieving the effect of driving the anti-blocking mesh brush 48 on the pressure block 481 to continuously rotate. The rotating anti-blocking mesh brush 48 acts on the isolation mesh plate 47, further achieving the effect of rotating and cleaning the isolation mesh plate 47, avoiding excessive blockage of the isolation mesh plate 47, and then affecting the effect of collecting bran powder at the air outlet 45.

[0028] When the rice bran powder removal device for processing the present invention is in use, the rice that needs to be debranched is fed into the screening machine 2 through the feed hopper 7, and the screening machine 2 is in a fixed state as a whole. The rice is fed into the screening machine 2 and is inclined to be guided into the mesh screen drum 31 under the influence of the feeding slope 9. The mesh screen drum 31 is provided with a bran powder screen, and the mesh screen drum 31 can rotate in the screening machine 2, and then the bran powder removal effect is achieved by rolling the rice. Since the mesh screen drum 31 is provided with a plurality of mesh screen holes, the bran powder can be thrown out of the drum during rolling, thereby avoiding the problem of residual bran powder. At the same time, there is friction between the rolled rice, which further reduces the problem of bran powder sticking to the rice. At the same time, since the spiral rod 35 is provided inside the screening machine 2, when the mesh screen drum 31 rotates, the spiral rod 35 does not rotate, and the rice located inside the mesh screen drum 31 is affected by the non-rotating spiral rod 35, and is continuously fed automatically, and continues to roll during the feeding period until it is discharged from the feeding base 41. By starting the active motor 36, the output shaft of the active motor 36 engages the mesh screen drum 31 through the double-headed gear shaft 37 to rotate. During the rotation of the mesh screen drum 31, multiple cams 38 in a circular array at the end of the mesh screen drum 31 will intermittently squeeze the convex disc 310. The convex disc 310 realizes a lateral movement after each squeezing. The spiral rod 35 in the non-working state is initially positioned in the connecting head 34 by the elastic force of the spring on the connecting plate 39. When the convex disc 310 is squeezed by the cam 38, the convex disc 310 as a whole will drive the spiral rod 35 to one side of the feed hopper 7. The end of the spiral rod 35 moves, and when the convex plate 310 loses the squeezing effect, the spiral rod 35 moves and resets, that is, the mesh screen cylinder 31 can drive the spiral rod 35 to continuously reciprocate during the rolling period, and the spiral rod 35 can contact and rub the rice again during the movement, thereby solving the problem of bran powder adhering to the rice. In order to prevent the spiral rod 35 from excessively wearing the rice, the outer edge of the spiral rod 35 is designed to be made of soft material (such as bristles, edible silica gel or edible rubber, etc.), so as to further improve the efficiency of removing bran powder while ensuring the quality of rice. After the rice is discharged by rolling friction, it flows out of the discharge base 41. Two groups of symmetrically distributed pressure plates 42 block the flow of rice. When the rice is discharged, the pressure plate 42 uses the torsion spring elastic force thereon to achieve elastic flow resistance, so that the rice is in a small amount and evenly dispersed state during the discharge. The blowing mechanism 5 continuously generates wind force and discharges it from the air outlet 45, thereby achieving the effect of airflow to separate the rice and the bran powder again, thereby avoiding the problem of a small amount of bran powder continuing to adhere to the rice, and achieving the effect of fully removing the bran powder. The wind force drives the bran powder to flow through the air outlet 45 to the collecting base 61. The isolation mesh plate 47 at the air outlet 45 isolates some small rice, thereby preventing broken rice from penetrating into the collecting base 61 that specially collects bran powder. The rice after the bran powder is removed by the wind is finally discharged through the rice discharge port 46.

[0029] When the screen drum 31 is rolling, the scraper 33 on the screen drum 31 rotates synchronously. Since the bran powder will be thrown out of the screen drum 31 when it rotates, the bran powder will fall into the interior of the screening machine 2. The interior of the screening machine 2 is designed to have a large central diameter and small diameters at both ends, so that the bran powder thrown out is concentrated from both ends to the center and discharged into the collecting base 61 from the bran powder discharge port 8. The rotating scraper 33 can, on the one hand, achieve the effect of cleaning the inner wall of the screening machine 2, and on the other hand, achieve the effect of rotating fanning, and use wind force to further promote the discharge of bran powder. At the same time, during the rotation of the scraper 33, the convex ring 332 at the yield groove 331 on it will intermittently squeeze the passive pressure shaft rod 65. After the passive pressure shaft rod 65 is squeezed When the air pressure plate 64 moves downward and loses the extrusion, the spring on the air pressure plate 64 is used to move and reset. During the period when the passive pressure shaft rod 65 drives the air pressure plate 64 to move up and down, the air pressure plate 64 generates positive pressure and negative pressure in the collecting base 61. When the air pressure plate 64 generates positive pressure downward, the extruded air flow is discharged through the annular circulation base 62 or the bran powder discharge port 8. The air flow discharged through the annular circulation base 62 is discharged to the inside of the screening machine 2 through the one-way air outlet pipe 63. Since the one-way air outlet pipe 63 is set in multiple numbers and is located in the upper area of ​​the circular inner wall of the annular circulation base 62, the wind force blows downward from the multiple one-way air outlet pipes 63 to the inside of the screening machine 2. The wind force is discharged from top to bottom in the screening machine 2, further achieving the effect of wind-driven bran powder discharge. When the air pressure plate 64 moves upward to generate negative pressure, the suction pressure can only act on the screening machine 2 through the bran powder discharge port 8, thereby achieving the effect of using negative pressure to quickly absorb bran powder. At the same time, the air pressure plate 64 that continuously moves up and down can continuously squeeze the pressure block 481 through the pressure rod 641, and then achieve the effect of driving the anti-blocking mesh brush 48 on the pressure block 481 to continuously rotate. The rotating anti-blocking mesh brush 48 acts on the isolation mesh plate 47, further achieving the effect of rotating and cleaning the isolation mesh plate 47, avoiding excessive blockage of the isolation mesh plate 47, and then affecting the effect of the air outlet 45 in collecting bran powder.

[0030] The above implementation methods are only used to illustrate the embodiments of the present invention, and are not intended to limit the embodiments of the present invention. Ordinary technicians in the relevant technical field may make various changes and modifications without departing from the spirit and scope of the embodiments of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the embodiments of the present invention. The patent protection scope of the embodiments of the present invention should be defined by the claims.

Claims

1. A rice bran removal device, characterized in that: include, A machine room base (1), wherein a screening machine (2) is fixedly installed inside the machine room base (1), a rolling screening device (3) is arranged inside the screening machine (2), the rolling screening device (3) comprises a screen cylinder (31) and a connector (34), both ends of the screen cylinder (31) are rotated inside the screening machine (2), a retention plate (32) is fixedly connected to the inner wall of the screen cylinder (31), a scraper (33) is fixedly connected to the surface of the screen cylinder (31), and a spiral rod (35) is slidably connected inside the connector (34); A wind screening device (4), wherein the wind screening device (4) is arranged at the unloading end of the screening machine (2); An air blowing mechanism (5), the air blowing mechanism (5) being arranged on the cabin base (1) and being used to connect with the wind screening device (4) to generate wind power for bran powder screening; An auxiliary screening and collecting device (6), wherein the auxiliary screening and collecting device (6) is arranged on the screening machine (2).

2. The rice bran removal device according to claim 1, characterized in that: The end of the screening machine (2) away from the wind screening device (4) is fixedly connected to a feed hopper (7), the screening machine (2) is provided with a bran powder discharge port (8), the end of the connector (34) is fixedly connected to the inside of the screening machine (2), and the end of the screening machine (2) close to the feed hopper (7) is provided with a discharge slope (9).

3. The rice bran removal device according to claim 1, characterized in that: The rolling screening device (3) further comprises an active motor (36), the surface of which is mounted on the screening machine (2), the output shaft of which is connected to a double-headed gear shaft (37), the surface of which is meshed with the surface of the screen cylinder (31), and the surface of which is rotatably connected to the screening machine (2).

4. The rice bran removal device according to claim 3, characterized in that: Both ends of the mesh screen cylinder (31) are fixedly connected to cams (38); the spiral rod (35) is located inside the connecting head (34) and is fixedly connected to a connecting plate (39); a spring is fixedly connected between the surface of the connecting plate (39) and the inside of the connecting head (34); and one end of the spiral rod (35) close to the feed hopper (7) is fixedly connected to a convex plate (310).

5. The rice bran removal device according to claim 4, characterized in that: The surface of the convex disc (310) is slidably connected to the inside of the screening machine (2); a magnetic ring 1 (311) is fixedly connected to a side of the convex disc (310) away from the spiral rod (35); one end of the magnetic ring 1 (311) is magnetically connected to a magnetic ring 2 (312); and an end of the magnetic ring 2 (312) is fixedly connected to the inside of the screening machine (2).

6. The rice bran removal device according to claim 1, characterized in that: The wind screening device (4) comprises a material discharge base (41), the surface of the material discharge base (41) is fixedly connected to the screening machine (2), the interior of the material discharge base (41) is elastically connected to a pressure plate (42) via a torsion spring, a protective cover cloth (43) is fixedly connected between the surface of the pressure plate (42) and the surface of the material discharge base (41), an air inlet (44), an air outlet (45) and a rice discharge port (46) are respectively provided on the material discharge base (41), an isolation mesh plate (47) is fixedly connected to the air outlet (45), and an anti-blocking mesh brush (48) is rotatably connected to the isolation mesh plate (47).

7. The rice bran removal device according to claim 6, characterized in that: The auxiliary screening and collecting device (6) comprises a collecting base (61), the surface of the collecting base (61) is fixedly connected to the screening machine (2), the collecting base (61) is fixedly connected to an annular circulation base (62), the annular circulation base (62) is fixedly connected to a one-way air outlet pipe (63), the internal piston of the collecting base (61) is connected to an air pressure plate (64), and the surface of the air pressure plate (64) is fixedly connected to a passive pressure shaft rod (65).

8. The rice bran removal device according to claim 7, characterized in that: The inner wall of the annular circulation base (62) is fixedly connected to the surface of the screening machine (2), the end of the one-way air outlet pipe (63) passes through the interior of the screening machine (2), a spring is fixedly connected between the surface of the air pressure plate (64) and the inner wall of the collecting base (61), and the inner wall of the air pressure plate (64) is slidably connected to the bottom end of the annular circulation base (62).

9. The rice bran removal device according to claim 8, characterized in that: A clearance groove (331) is provided on the surface of the scraper (33) at the passive pressure shaft rod (65), and a convex ring (332) is provided on the clearance groove (331). The convex ring (332) is used to press the passive pressure shaft rod (65).

10. The rice bran removal device according to claim 7, characterized in that: One end of the anti-blocking net brush (48) close to the air pressure plate (64) is fixedly connected to a pressing block (481), and the bottom of the air pressure plate (64) is fixedly connected to a pressing rod (641), and the pressing rod (641) is used to press the pressing block (481).

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