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CN-121988421-A - Two-phase flow rice pneumatic polishing device

CN121988421ACN 121988421 ACN121988421 ACN 121988421ACN-121988421-A

Abstract

The invention discloses a two-phase flow rice pneumatic polishing device, which relates to the technical field of rice polishing and comprises a polishing machine body, wherein a feed inlet and a discharge outlet are respectively arranged on the polishing machine body, one end of the discharge outlet is fixedly provided with a guide cabin, a guide mechanism for intermittent guide is arranged in the guide cabin, a material separation cabin is fixedly arranged below the guide cabin, the guide cabin is communicated with the material separation cabin through a guide groove, the material separation cabin is provided with a material separation mechanism for classifying polished products of the polishing machine body, a first hopper and a second hopper for collecting impurities and whole rice are respectively arranged below the material separation cabin, and when the device is used, a gear transmission structure formed by a sun gear and a planetary gear is driven by a guide motor to drive a transmission swing arm, a rotary rod wheel disc and a guide roller to realize intermittent rotation, the guide roller is separated by a cross baffle to realize quantitative intermittent guide, and the buffer transition effect of the guide cabin is matched, so that the whole rice secondary crushing caused by direct high-speed discharge of polished materials is effectively avoided.

Inventors

  • Meng Xianghuan

Assignees

  • 汤原县国祥米业有限公司

Dates

Publication Date
20260508
Application Date
20260311

Claims (9)

  1. 1. The double-phase flow rice pneumatic polishing device is characterized by comprising a polishing machine body (1), wherein a feeding port (11) and a discharging port (12) are respectively arranged on the polishing machine body (1), a guide cabin (2) is fixedly arranged at one end of the discharging port (12) extending to the outside of the polishing machine body (1), a guide mechanism (3) for intermittent guide is arranged in the guide cabin (2), a material distributing cabin (4) is fixedly arranged below the guide cabin (2), the guide cabin (2) is communicated with the material distributing cabin (4) through a guide groove (21), a material distributing mechanism (5) for classifying polished products of the polishing machine body (1) is arranged on the material distributing cabin (4), and a first hopper (6) and a second hopper (7) for collecting impurities and whole rice are respectively arranged below the material distributing cabin (4). The material guiding mechanism (3) comprises material guiding rollers (32) driven by a material guiding motor (31), two ends of each material guiding roller (32) are respectively and fixedly provided with baffle plates (321) matched with the inner wall of the material guiding cabin (2), material grooves are formed between the baffle plates (321) and along the length direction of each material guiding roller (32), the material grooves on the material guiding rollers (32) are separated by partition plates, and the cross sections formed by the partition plates on the material guiding rollers (32) are cross-shaped; The center of the guide roller (32) is fixedly provided with a main rotating rod (33) which is in transmission connection with the guide motor (31).
  2. 2. The two-phase flow rice pneumatic polishing device according to claim 1, wherein one end of the main rotating rod (33) extending to the material guiding cabin (2) is fixedly provided with a rotating rod wheel disc (331), the rotating rod wheel disc (331) is rotationally connected to the material guiding cabin (2) through the main rotating rod (33), the rotating rod wheel disc (331) is provided with a cross sliding groove (3311) which coincides with a partition plate on the material guiding roller (32), the cross sliding groove (3311) is fixedly provided with limiting arc-shaped seats (3312) which are distributed in an annular array around the main rotating rod (33), and a connecting line between the limiting arc-shaped seats (3312) is a cross.
  3. 3. The two-phase flow rice pneumatic polishing device according to claim 2, wherein the material guiding motor (31) is fixedly installed on the material distributing cabin (4) through a stand column (34), an output shaft of the material guiding motor (31) is in transmission connection with a sun gear (311), the stand column (34) is further in rotation connection with a gear shaft (35) through a bearing, a planetary gear (36) meshed with the sun gear (311) is fixedly installed on the gear shaft (35), and a transmission swing arm (37) used for driving a rotating rod wheel disc (331) to rotate is fixedly installed at one end of the gear shaft (35) penetrating through the stand column (34).
  4. 4. The two-phase flow rice pneumatic polishing device according to claim 3, wherein one end of the transmission swing arm (37) is fixedly provided with a pin shaft (38) matched with the cross chute (3311), one end of the transmission swing arm (37) far away from the pin shaft (38) is also provided with an arc surface matched with the limiting arc base (3312), and the transmission swing arm (37) is eccentrically arranged on the rotating rod wheel disc (331) through a gear shaft (35).
  5. 5. The two-phase flow rice pneumatic polishing device according to claim 1, wherein the material distributing mechanism (5) comprises a material distributing motor (51) fixedly installed on the material distributing cabin (4), an output shaft of the material distributing motor (51) is in transmission connection with a material sieving cabin (52), the material sieving cabin (52) is rotationally connected in the material distributing cabin (4) through the material distributing motor (51), a slag discharging groove (521) which is used for discharging impurities and corresponds to the first hopper (6) is arranged on the material sieving cabin (52), a rice sieving plate (53) which is used for sieving whole rice is further movably connected to an upper opening of the material sieving cabin (52), and a symmetrically distributed counterweight seat (531) is further arranged on the material sieving cabin (52).
  6. 6. The two-phase flow rice pneumatic polishing device according to claim 5, wherein the material separation cabin (4) is provided with an avoidance arc groove (41) for avoiding the slag discharge groove (521) along the circumferential direction of the material separation cabin, a material blocking seat (411) is fixedly installed on the inner wall of the avoidance arc groove (41), and the material blocking seat (411) is located on one side, away from the avoidance arc groove (41), of the slag discharge groove (521).
  7. 7. The two-phase flow rice pneumatic polishing device according to claim 6, wherein the side of the material blocking seat (411) away from the slag discharging groove (521) is fixedly provided with a rice discharging groove (43) which is used for discharging whole rice and corresponds to the second hopper (7).
  8. 8. The two-phase flow rice pneumatic polishing device according to claim 7, wherein the inner wall of the material separation cabin (4) is fixedly provided with symmetrically arranged baffle plates (42), the baffle plates (42) are distributed on two sides of the material guide groove (21), one ends of the baffle plates far away from the inner wall of the material separation cabin (4) are obliquely arranged downwards, and a notch corresponding to an upper opening of the material screening cabin (52) is arranged between the baffle plates (42).
  9. 9. The two-phase flow rice pneumatic polishing device according to claim 8, wherein guide rods which are vertically distributed are fixedly arranged at four corners of the rice sieving plate (53), springs (54) are sleeved outside the guide rods of the rice sieving plate (53), a gravity sensor (55) for monitoring the weight of the rice sieving plate (53) is further arranged on the inner wall of the material sieving cabin (52), and the gravity sensor (55) is electrically connected with a controller on the material distributing motor (51).

Description

Two-phase flow rice pneumatic polishing device Technical Field The invention relates to the technical field of rice polishing, in particular to a two-phase flow rice pneumatic polishing device. Background The polishing of rice is a key procedure for polished rice processing, and aims to remove residual bran powder on the surface of rice grains through physical action and gelatinize starch on the surface of rice endosperm to form a smooth protective film, so that the appearance quality, taste quality and storage stability of the rice are remarkably improved. Compared with traditional mechanical rice polishing equipment, the two-phase flow rice pneumatic polishing machine is based on the gas-solid two-phase flow dynamics principle, the structural design of a gas cyclone system is used for reference, two different flow rates and different pressures of air flows are introduced to form a two-phase flow field, rice particles are driven to do complex rotation and collision motion in a polishing cavity, surface rice bran is removed by utilizing the kinetic energy of the air flows and flexible friction among the particles, the rice grains are suspended and accelerated under the action of high-speed air flows in the polishing process, surface polishing is completed in a polishing section with a specific design, gas-solid separation is achieved through a cyclone separator, and rice is discharged from a discharge hole. In the working process of the polishing machine, polished rice can be directly thrown out from a discharge hole at a high speed, the discharge structure of the existing two-phase flow rice pneumatic polishing device is designed in a straight-line mode, a corresponding batch collecting and buffering mechanism is not arranged, partial whole rice is easily crushed twice due to impact force generated by high-speed throwing, impurities such as polished whole rice, a small amount of broken rice and rice bran which are not separated can be continuously thrown out from the discharge hole together, and the impurities are directly stacked in a collecting container and are further subjected to subsequent additional sorting. Disclosure of Invention The present invention has been made in view of the above-mentioned problems occurring in the prior art. Therefore, the invention aims to provide a double-phase flow rice pneumatic polishing device, which aims to solve the problems that the discharging structure of the existing double-phase flow rice pneumatic polishing device is mainly of a straight-line design, a corresponding batch collecting and buffering mechanism is not arranged, partial whole rice is easy to crush secondarily due to impact force generated by high-speed throwing, and polished whole rice, a small amount of undivided broken rice and rice bran can be continuously thrown out of a discharging hole together, so that additional sorting is needed. In order to achieve the aim, the invention provides the technical scheme that the two-phase flow rice pneumatic polishing device comprises a polishing machine body, wherein a feeding port and a discharging port are respectively arranged on the polishing machine body, a material guide cabin is fixedly arranged at one end of the discharging port extending to the outside of the polishing machine body, a material guide mechanism for intermittent material guide is arranged in the material guide cabin, a material separation cabin is fixedly arranged below the material guide cabin, the material guide cabin is communicated with the material separation cabin through a material guide groove, a material separation mechanism for classifying polished products of the polishing machine body is arranged on the material separation cabin, and a first hopper and a second hopper for collecting impurities and whole rice are respectively arranged below the material separation cabin; The guide mechanism comprises guide rollers driven by a guide motor, two ends of each guide roller are respectively and fixedly provided with baffle plates matched with the inner wall of the guide cabin, a trough is arranged between the baffle plates along the length direction of each guide roller, the trough on each guide roller is mutually separated by a baffle plate, and the cross section formed by the baffle plates on each guide roller is cross; the center of the guide roller is fixedly provided with a main rotating rod which is in transmission connection with the guide motor. As a preferable scheme of the double-phase flow rice pneumatic polishing device, one end of the main rotating rod extending to the material guiding cabin is fixedly provided with a rotating rod wheel disc, the rotating rod wheel disc is rotationally connected to the material guiding cabin through the main rotating rod, a cross sliding groove which is coincided with a baffle plate on the material guiding roller is formed in the rotating rod wheel disc, limit arc-shaped seats which are distributed in an annular array around the main